阅读说明：本技术 人工贝壳鱼礁及其制备方法 (Artificial shell fish reef and preparation method thereof ) 是由 林岿璇 刘录三 洪波 王瑜 刘云龙 孔维静 夏会娟 朱延忠 周娟 王蕊 李兴华 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种人工贝壳鱼礁,包括：主体Ⅰ为一锥状体,主体Ⅰ包括基座Ⅰ；根支撑杆Ⅰ；多根缆绳和多根分支绳；主体Ⅱ包括基座Ⅱ；多根支撑杆Ⅱ；支撑台；容置槽；盖体；海草种植在容置槽内的海底基质中；以及多个网笼,任一网笼内填充贝类。本发明公开了一种人工贝壳鱼礁的制备方法。应用本发明提供的制备方法制备获得的人工贝壳鱼礁,能够营造异质性栖息环境,为藻类、贝类、甲壳类、鱼类等提供适宜的附着、生长和繁殖场所,提高河口生物多样性,促进湿地生态系统的生物连通,并且还可进一步提高海草覆盖率,有效改善河口带生态环境。(The invention discloses an artificial shell fish reef, which comprises: the main body I is a conical body and comprises a base I; a root support rod I; a plurality of cables and a plurality of branch ropes; the main body II comprises a base II; a plurality of support rods II; a support table; a containing groove; a cover body; the seaweed is planted in the seabed matrix in the accommodating groove; and a plurality of net cages, wherein the shellfish is filled in any net cage. The invention discloses a preparation method of an artificial shell fish reef. The artificial shell fish reef prepared by the preparation method provided by the invention can create a heterogeneous inhabitation environment, provide suitable attachment, growth and reproduction places for algae, shellfish, crustaceans, fishes and the like, improve the biological diversity of the estuary, promote the biological communication of a wetland ecosystem, further improve the seaweed coverage rate and effectively improve the ecological environment of the estuary zone.)

1. An artificial shellfish fish reef, comprising:

the main body I is a cone-shaped body and comprises a base I; a plurality of support rods I, the lower ends of which are fixed to the base I

The upper ends of the support rods I extend upwards and are mutually close to form the tip of a cone; one end of each cable is uniformly dispersed and fixed to the corresponding support rod I, and the upper ends of the cables are fixed to the corresponding floating balls respectively; one end of each branch rope is fixed on the corresponding cable rope and is arranged close to the upper end of the corresponding cable rope, the other end of each branch rope is a free end, and at least one seaweed seedling is bound and clamped on any branch rope;

a body II, comprising: a base II; the lower ends of the support rods II are fixed on the upper table top of the base, the upper ends of the support rods II extend upwards and are arranged close to each other, and any two support rods II in the support rods II are not in contact with each other; the supporting table is a flat cylinder and is fixedly arranged at the upper ends of the supporting rods II, the supporting table and the base II are arranged in parallel, the diameter of the cross section of the supporting table is smaller than that of the cross section of the base, and the weight of the supporting table is smaller than 1/2 of the weight of the base II; the accommodating groove is concavely formed on the upper surface of the supporting table; the shallow seabed stratum is laid in the accommodating groove; the cover body is covered on the shallow seabed stratum layer, and the cover body is arranged at the opening of the accommodating groove in an embedded mode in a matched mode; a plurality of through holes which are uniformly distributed on the cover body, wherein shallow seabed materials are filled in the through holes, and the diameter of any through hole is at least 3 cm; sea grass planted in the plurality of through holes;

the net cages are detachably arranged in a conical accommodating cavity enclosed between the base I of the main body I and the support rods I; the plurality of net cages are detachably arranged in accommodating cavities among the base II of the main body II, the plurality of support rods II and the support platform, and any net cage is filled with shellfish;

the height of the main body I is not more than 2m, the main body I is arranged at a depth of below 5m below the sea level, and the branch ropes are arranged at a depth of 0-3m below the sea level; the height of the main body II is not more than 1.5m, and the main body II is arranged at the depth of 3-5m below the sea level.

2. The artificial shellfish reef of claim 1, wherein at least three bodies i and at least three bodies ii are arranged in a group, wherein a plurality of floating balls fixedly connected to the upper ends of a plurality of cables of at least three bodies i are respectively fixed to two floating ropes, and a plurality of floating balls on any one floating rope are sequentially connected in series, and the spacing distance between two adjacent floating balls on the same floating rope is at least 1.5 m;

and one ends of the anchor ropes are fixed to the at least three main bodies II, and the other ends of the anchor ropes are respectively fixed to the two floating ropes.

3. The artificial shellfish reef of claim 1, wherein the base i, the base ii and the support platform are all formed by cement casting, and the circular table-boards of the base i and the base ii are all 1.5-1.7 m in diameter and 0.4-0.5m in height.

4. The artificial shellfish reef of claim 1, wherein the accommodating groove and the cover are made of degradable straw material, and the thickness of the side wall of the accommodating groove is less than 5 mm;

the sum of the thickness of the shallow seabed stratum and the thickness of the cover body is adaptive to the depth of the containing groove, and the thickness of the shallow seabed stratum is 2-5 cm.

5. The artificial shellfish reef of claim 1, further comprising: the grooves are concavely formed on the bottom surfaces of the base I and the base II, the diameter of any groove is less than 4cm, and the depth of any groove is less than 3 cm; and

a plurality of fixed cones, its evenly distributed is on the lateral wall of base I and base II, and the setting of a plurality of fixed cones inversion and slope, the vertebra point of a plurality of fixed cones sets up rather than the bottom surface parallel and level of base I or base II at place.

6. The artificial shellfish reef of claim 1, wherein the plurality of netpens further comprise a cylindrical support; the polyethylene net covers the cylindrical support, and the shells are filled in the net cage;

the plurality of net cages are vertically stacked layer by layer, and the number of the net cages on each layer is gradually reduced from bottom to top.

7. The artificial shellfish reef of claim 1, wherein any one of the plurality of netpens further comprises a polyethylene mesh cylinder which is a cylindrical mesh body; the partition plates are uniformly arranged in the polyethylene mesh cylinder at intervals in sequence, the polyethylene mesh cylinder is divided into a plurality of cylindrical accommodating spaces, and the shells are filled in the cylindrical accommodating spaces;

a plurality of cylinder mould erect arrange set up in the cavity that holds between base, a plurality of spinal branchs vaulting pole and the brace table.

8. The artificial shellfish reef of claim 1, wherein the shellfish is at least one of Mactra veneriformis, Pacific oyster, Meretrix meretrix, Ruditapes philippinarum, Argopecten irradians, Chlamys farreri, Mytilus edulis, and Arca subcrenata;

the sea weed is at least one of eel and Japanese eel;

the Sargassum is at least one of Cyrtymenia Sparsa and thallus Gracilariae.

9. A method for preparing the artificial shellfish reef of any of claims 1 to 8, comprising the steps of:

step one, pre-culture: planting sea grass seeds in the accommodating groove, additionally arranging a cover body, and placing the accommodating groove at a depth of 0-1.5m below the sea level for culture until the sea grass seeds germinate and grow into seedlings; meanwhile, clamping the seaweed seedlings on branch ropes of the mooring ropes, and placing the seaweed seedlings in a culture pond for culture;

step two, main body pouring preparation: the concrete pouring base I is provided with a plurality of support rods I, the lower ends of the support rods I are poured on the base I, the upper ends of the support rods I are mutually abutted and welded and fixed, and a plurality of net cages are bound in the base I and the support rods I; respectively binding the mooring ropes with the seaweeds in the step I to a plurality of supporting rods I;

the cement pouring base II is provided with a plurality of support rods II, the lower ends of the support rods II are poured on the base II, the upper ends of the support rods II are close to each other but do not conflict with each other, then a support table is poured, the containing groove with the seaweed seedlings in the step I is adhered and fixed on the support table, and a plurality of net cages are bound in containing cavities among the base II, the support rods II and the support table;

step three, arranging into the sea: arrange main part I and main part II with apart from sea level certain degree of depth department to set up hawser length and the arrangement degree of depth looks adaptation of main part I, make and float the ball and float in the sea, branch rope and marine alga float along with the wave, wherein, main part I and main part II draw close each other and set up to artifical shell fish reef crowd.

10. The method for preparing an artificial shellfish reef of claim 9, wherein 1-2 cables are tied to one support rod i; 1-3 branch ropes are dispersedly arranged on one cable.

Technical Field

The invention relates to the technical field of artificial fish reefs, in particular to an artificial shell fish reef and a preparation method thereof.

Background

The artificial fish reef is a structure artificially arranged in the sea, and aims to increase the heterogeneity of the sea bottom, create a good environment for the inhabitation of marine organisms and provide breeding, growth, bait-lashing and sheltering places for fishes and the like. At present, the construction of artificial fish reefs is widely carried out at home and abroad to repair the habitats and fisheries of offshore marine organisms, and a better effect is achieved. Most of the traditional fish reefs are made of stones or concrete members with single structures, the fish reefs are simple in structure, heterogeneity inside the reefs is low, and habitat and attached matrix cannot be better provided for marine organisms. Sea grass is a flowering plant that grows in the ocean, widely spread in the coastal zones of the tropical and temperate zones of the world. The main types of seaweed in northern China comprise eel grass, Japanese eel grass, red fiber shrimp seaweed and the like, and the main types of seaweed in southern China comprise halophilous herbs, telangium and the like. The seaweed usually forms a large-area seaweed bed in coastal sub-tidal zones, can resist the erosion of stormy waves to coastal substrates, has a protection effect on marine benthos, and is a good growing place for juvenile shrimps and juvenile fishes. But the ecosystem of the sea bed has degraded dramatically in the last decades due to the interference of human activities, and statistically, the global sea bed has decreased at a rate of 7% per year since the nineties of the last century. Macroalgae are multicellular marine spore plants, mainly including species of the rhodophyta, phaeophyta and chlorophyta. The large-scale seaweed not only can improve the quality of ocean water, but also has high economic value and is widely applied to the fields of food, chemical industry, medicine and the like. In recent years, coastal natural algae farms in China degenerate, but the algae cultivation industry develops faster, the annual output reaches more than 200 ten thousand tons, and the cultivation types mainly comprise kelp, undaria pinnatifida, asparagus, porphyra haitanensis and the like.

Disclosure of Invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

Still another object of the present invention is to provide an artificial shell fish reef which can create a heterogeneous habitat, provide suitable attachment, growth and breeding sites for algae, shellfish, crustaceans, fish, etc., increase the biodiversity of the estuary, promote the biological communication of wetland ecosystem, further increase the coverage of seaweed and seaweed, and effectively improve the ecological environment of the estuary zone.

Still another object of the present invention is to provide a method for preparing an artificial shell fish reef to guide a correct preparation method of the artificial shell fish reef and to ensure an effect of the artificial shell fish reef.

To achieve these objects and other advantages in accordance with the present invention, there is provided an artificial shellfish reef comprising:

the main body I is a cone-shaped body and comprises a base I; a plurality of support rods I, the lower ends of which are fixed to the base I

The upper ends of the support rods I extend upwards and are mutually close to form the tip of a cone; one end of each cable is uniformly dispersed and fixed to the corresponding support rod I, and the upper ends of the cables are fixed to the corresponding floating balls respectively; one end of each branch rope is fixed on the plurality of mooring ropes and is arranged close to the upper ends of the plurality of mooring ropes, the other ends of the plurality of branch ropes are free ends, and at least one seaweed seedling is clamped on any branch rope;

a body II, comprising: a base II; the lower ends of the support rods II are fixed on the upper table top of the base, the upper ends of the support rods II extend upwards and are arranged close to each other, and any two support rods II in the support rods II are not in contact with each other; the supporting table is a flat cylinder and is fixedly arranged at the upper ends of the supporting rods II, the supporting table and the base II are arranged in parallel, the diameter of the cross section of the supporting table is smaller than that of the cross section of the base, and the weight of the supporting table is smaller than 1/2 of the weight of the base II; the accommodating groove is concavely formed on the upper surface of the supporting table; the shallow seabed stratum is laid in the accommodating groove; the cover body is covered on the shallow seabed stratum layer, and the cover body is arranged at the opening of the accommodating groove in an embedded mode in a matched mode; a plurality of through holes which are uniformly distributed on the cover body, wherein shallow seabed materials are filled in the through holes, and the diameter of any through hole is at least 3 cm; sea grass planted in the plurality of through holes;

the net cages are detachably arranged in a conical accommodating cavity enclosed between the base I of the main body I and the support rods I; the plurality of net cages are detachably arranged in accommodating cavities among the base II of the main body II, the plurality of support rods II and the support platform, and any net cage is filled with shellfish;

the height of the main body I is not more than 2m, the main body I is arranged at a depth of below 5m below the sea level, and the branch ropes are arranged at a depth of 0-3m below the sea level; the height of the main body II is not more than 1.5m, and the main body II is arranged at the depth of 3-5m below the sea level.

Preferably, the at least three main bodies I and the at least three main bodies II are arranged in a group, wherein a plurality of floating balls fixedly connected with the upper ends of a plurality of mooring ropes of the at least three main bodies I are respectively fixed on two floating ropes, the floating balls on any floating rope are sequentially connected in series, and the spacing distance between two adjacent floating balls on the same floating rope is at least 1.5 m;

and one ends of the anchor ropes are fixed to the at least three main bodies II, and the other ends of the anchor ropes are respectively fixed to the two floating ropes.

Preferably, the base I, the base II and the supporting platform are all formed by cement casting, the diameters of the circular table tops of the base I and the base II are 1.5-1.7 m, and the heights of the circular table tops are 0.4-0.5 m.

Preferably, the accommodating groove and the cover body are made of degradable straw materials, and the thickness of the side wall of the accommodating groove is less than 5 mm;

the sum of the thickness of the shallow seabed stratum and the thickness of the cover body is adaptive to the depth of the containing groove, and the thickness of the shallow seabed stratum is 2-5 cm.

Preferably, the method further comprises the following steps: the grooves are concavely formed on the bottom surfaces of the base I and the base II, the diameter of any groove is less than 4cm, and the depth of any groove is less than 3 cm; and

a plurality of fixed cones, its evenly distributed is on the lateral wall of base I and base II, and the setting of a plurality of fixed cones inversion and slope, the vertebra point of a plurality of fixed cones sets up rather than the bottom surface parallel and level of base I or base II at place.

Preferably, the plurality of netpens further comprises a cylindrical support; the polyethylene net covers the cylindrical support, and the shells are filled in the net cage;

the plurality of net cages are vertically stacked layer by layer, and the number of the net cages on each layer is gradually reduced from bottom to top.

Preferably, any one of the netpen cages further comprises a polyethylene net cylinder which is a cylindrical net body; the partition plates are uniformly arranged in the polyethylene mesh cylinder at intervals in sequence, the polyethylene mesh cylinder is divided into a plurality of cylindrical accommodating spaces, and the shells are filled in the cylindrical accommodating spaces;

a plurality of cylinder mould erect arrange set up in the cavity that holds between base, a plurality of spinal branchs vaulting pole and the brace table.

Preferably, the shellfish is at least one of Mactra veneriformis, Pacific oyster, Meretrix meretrix Linnaeus, Ruditapes philippinarum, Argopecten irradians, Chlamys farreri, Mytilus edulis and Arca subcrenata;

the sea weed is at least one of eel and Japanese eel;

the Sargassum is at least one of Cyrtymenia Sparsa and thallus Gracilariae.

A preparation method of the artificial shell fish reef comprises the following steps:

step one, pre-culture: planting sea grass seeds in the accommodating groove, additionally arranging a cover body, and placing the accommodating groove at a depth of 0-1.5m below the sea level for culture until the sea grass seeds germinate and grow into seedlings; meanwhile, clamping the seaweed seedlings on branch ropes of the mooring ropes, and placing the seaweed seedlings in a culture pond for culture;

step two, main body pouring preparation: the concrete pouring base I is provided with a plurality of support rods I, the lower ends of the support rods I are poured on the base I, the upper ends of the support rods I are mutually abutted and welded and fixed, and a plurality of net cages are bound in the base I and the support rods I; respectively binding the mooring ropes with the seaweeds in the step I to a plurality of supporting rods I;

the cement pouring base II is provided with a plurality of support rods II, the lower ends of the support rods II are poured on the base II, the upper ends of the support rods II are close to each other but do not conflict with each other, then a support table is poured, the containing groove with the seaweed seedlings in the step I is adhered and fixed on the support table, and a plurality of net cages are bound in containing cavities among the base II, the support rods II and the support table;

step three, arranging into the sea: arrange main part I and main part II with apart from sea level certain degree of depth department to set up hawser length and the arrangement degree of depth looks adaptation of main part I, make and float the ball and float in the sea, branch rope and marine alga float along with the wave, wherein, main part I and main part II draw close each other and set up to artifical shell fish reef crowd.

Preferably, 1-2 cables are bound on one supporting rod I; 1-3 branch ropes are dispersedly arranged on one cable.

The invention at least comprises the following beneficial effects:

the artificial shell fish reef provided by the invention is arranged in the wetland in the underwater zone to create a heterogeneous inhabitation environment, provide suitable attachment, growth and reproduction places for algae, shellfish, crustaceans, fishes and the like, improve the biological diversity of the estuary, promote the biological communication of the wetland ecosystem, further improve the coverage rate of algae and seaweed and effectively improve the ecological environment of the estuary zone.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic front view illustrating a main body i of an artificial shellfish reef according to an embodiment of the present invention;

fig. 2 is a schematic front view illustrating a main body ii of the artificial shellfish reef according to an embodiment of the present invention;

FIG. 3 is a schematic longitudinal sectional view of a support stage according to an embodiment of the present invention;

fig. 4 is a schematic front view illustrating a main body ii of the artificial shellfish reef according to another embodiment of the present invention;

FIG. 5 is a schematic top view of an artificial shellfish reef according to yet another embodiment of the present invention;

FIG. 6 is a schematic longitudinal sectional view of a base I or a base II according to an embodiment of the present invention;

fig. 7 is a schematic elevation view of a netpen according to an embodiment of the invention;

fig. 8 is a schematic front view of a netpen according to yet another embodiment of the invention.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Example 1

As shown in fig. 1 to 4, the present invention provides an artificial shell fish reef, including:

the main body I is a cone-shaped body and comprises a base I10; the lower ends of the support rods I101 are fixed on the upper table top of the base I, and the upper ends of the support rods I extend upwards and are mutually close to form the tip of a cone; a plurality of cables 102, one ends of which are uniformly dispersed and fixed on the plurality of support rods I, and the upper ends of the plurality of cables are respectively fixed on the plurality of floating balls; one end of each branch rope 1021 is fixed on each cable rope and is arranged close to the upper end of each cable rope, the other end of each branch rope is a free end, and at least one seaweed seedling is clamped on any branch rope (nylon rope); such as: 2-5cm long Cyrtymenia Sparsa; thallus Gracilariae 10-20 cm long; the diameter of any branch rope is smaller than 1/4 of the diameter of any cable rope, so that the branch rope can float in the seawater to drive the seaweed to disperse and grow; the seaweed grows rapidly in a proper water layer, the proliferation effect is obvious, in addition, the seaweed is distributed in the water body above the main body I, and fish schools and the like are concentrated around the main body I, so that the seaweed can be effectively prevented from being ingested by the fish schools and the like; a body II, comprising: a base II 20; the lower ends of the support rods II 201 are fixed on the upper table top of the base, the upper ends of the support rods II extend upwards and are arranged close to each other, and any two support rods II in the support rods II are not in contact with each other; the supporting table 202 is a flat cylinder, is fixedly arranged at the upper ends of the supporting rods II and is parallel to the base II, the diameter of the cross section of the supporting table is smaller than that of the cross section of the base, and the weight of the supporting table is smaller than 1/2 of the weight of the base II; a receiving groove 203 formed concavely on an upper surface of the support table; a shallow seabed stratum 204 laid in the storage tank; the cover body 205 is covered on the shallow seabed stratum layer, and the cover body is arranged at the opening of the accommodating groove in an embedded mode in a matching mode; a plurality of through holes 206 uniformly distributed on the cover body, wherein shallow seabed material is filled in the plurality of through holes, and the diameter of each through hole is at least 3 cm; sea grass 207 planted in the plurality of through holes; the net cages 30 are detachably arranged in a conical accommodating cavity enclosed between the base I of the main body I and the support rods I; the plurality of net cages are detachably arranged in accommodating cavities among the base II of the main body II, the plurality of support rods II and the support platform, and any net cage is filled with shellfish; the height of the main body I is not more than 2m, the main body I is arranged at a depth of below 5m below the sea level, and the branch ropes are arranged at a depth of 0-3m below the sea level; the height of the main body II is not more than 1.5m, and the main body II is arranged at the depth of 3-5m below the sea level.

In the scheme, the main body I is in a cone structure, the area of the main body I subjected to water flow thrust is small, the base I plays a role in stabilizing the foundation, the stability of the main body I can be kept, drifting can be caused, the vertical state of the main body I can be kept, and overturning can be avoided; the vertebral body cage formed by the support rods I can also be used for binding and fixing a plurality of net cages and a plurality of cables; the artificial fish shelter plays a role of an anchor pier, and the coverage area of the seaweed can be effectively increased while the artificial fish shelter is put in;

in the main body II, the weight of the base II is far larger than that of the support table, the effect of stabilizing the base is achieved, the area of the whole of the support rods II and the net cages which are pushed by water flow is small, the stability of the main body II can be kept, and the main body II is prevented from drifting under the action of waves; the structure of the trapezoidal cylinder can also keep the vertical state of the main body II, so that overturning is avoided; a trapezoidal cylinder is formed among the base, the plurality of support rods II and the support table, shells are filled in the net cage, other materials are not introduced, the net cage can be used as bait, the gathering of organisms such as fishes, shellfishes and crustaceans is attracted, and a biological community is formed quickly; eel grass, Japanese eel grass and the like can be planted on the support platform through laying the shallow seabed stratum, in the initial stage of putting the artificial shell fish reef, in order to avoid the shallow seabed stratum and the seaweed from being dispersed by waves, a cover body is laid on the shallow seabed stratum, and the seaweed is rooted into the shallow seabed stratum through the through holes to grow healthily; many spinal branchs vaulting pole I and many spinal branchs vaulting pole II are 18 mm's of diameter screw-thread steel, generally can set up 6, 7 or 8 etc. to enough firm main part I and main part II keep artifical shell fish reef compact structure.

In conclusion, the artificial shell fish reef provided by the invention is arranged in the wetland in the sub-tidal zone to create a heterogeneous inhabitation environment, provide suitable attachment, growth and propagation places for algae, shellfish, crustaceans, fishes and the like, improve the biodiversity of the estuary, promote the biological communication of the wetland ecosystem, further improve the coverage rate of seaweed and effectively improve the ecological environment of the estuary zone.

As shown in fig. 5, in a preferred embodiment, at least three main bodies i and at least three main bodies ii are arranged in a group, wherein a plurality of floating balls fixedly connected to the upper ends of a plurality of cables of the at least three main bodies i are respectively fixed to two floating ropes 40, and a plurality of floating balls on any one floating rope are sequentially connected in series, and the spacing distance between two adjacent floating balls on the same floating rope is at least 1.5 m; and a plurality of anchor ropes 50, one ends of which are fixed to the at least three main bodies II, and the other ends of which are fixed to the two floating ropes respectively. Many anchor ropes play the positioning action to two floating ropes, and two floating ropes can further keep the effective distance between many hawsers and many branch ropes again, and then drive and keep effective distance between the marine alga of fixing it on, for marine alga growth provides enough space and illumination, makes its quick growth, improves marine alga coverage.

In a preferable scheme, the base I, the base II and the supporting platform are all formed by cement casting, the diameters of the circular table tops of the base I and the base II are 1.5-1.7 m (1.5m, 1.6m or 1.7m and the like), and the heights of the circular table tops of the base I and the base II are 0.4-0.5m (0.4m, 0.45m or 0.5m and the like).

In a preferred scheme, the accommodating groove and the cover body are made of degradable straw materials, and the thickness of the side wall of the accommodating groove is less than 5 mm; the sum of the thickness of the shallow seabed stratum and the thickness of the cover body is suitable for the depth of the containing groove, and the thickness of the shallow seabed stratum is 2-5cm (2cm, 3cm or 5cm and the like). Storage tank and lid adopt degradable straw material, can not cause the pollution to the ocean, can also provide certain organic matter for marine organisms such as sea grass, in addition, in order to increase the weight of storage tank and lid, still can be when adopting degradable straw material compression preparation lid, mix the marine alga mud that accounts for 10% of total volume and the shell that accounts for 15% of total volume wherein.

As shown in fig. 6, in a preferred embodiment, the method further includes: a plurality of grooves 60 which are concavely formed on the bottom surfaces of the base I and the base II, wherein the diameter of any groove is less than 4cm, and the depth of any groove is less than 3 cm; and a plurality of fixed cones 70, its evenly distributed is on the lateral wall of base I and base II, and the setting of a plurality of fixed cones inversion and slope, the awl point of a plurality of fixed cones sets up rather than the bottom surface parallel and level of base I or base II at place to the operation of conveniently pouring, can also avoid in handling, the awl point bumps with ground etc. and avoids unnecessary loss. In the scheme, after the artificial shell fish reef is put into the wetland in the sub-tidal zone, the actual contact area of the base and the seabed can be increased through the plurality of grooves, and the stability is improved; when the base part sinks to the seabed for a certain depth, the tips of the fixed cones are synchronously inserted into the seabed around the base, and a plurality of fixed points which are uniformly distributed are increased.

As shown in fig. 7, in a preferred embodiment, the plurality of netpens further comprise a cylindrical support; the polyethylene net 301 is covered on the cylindrical bracket 302, and shells are filled in the net cage; a plurality of cylinder mould successive layers are vertically piled up and set up, concatenate each other through rope, steel wire etc. and fix to many spinal branchs vaulting pole I and base I on, and from bottom to top, the number of every layer of cylinder mould reduces gradually.

As shown in fig. 8, in a preferred embodiment, any one of the netpen cages further comprises a polyethylene net drum 303 which is a cylindrical net body; the partition plates 304 are uniformly arranged in the polyethylene mesh cylinder at intervals in sequence, the polyethylene mesh cylinder is divided into a plurality of cylindrical accommodating spaces, and the shells are filled in the cylindrical accommodating spaces; a plurality of net cages are vertically arranged in the conical accommodating cavity and the accommodating cavity. In practical application, an opening 305 may be formed in a side wall of the polyethylene mesh cylinder so as to fill shells into the accommodating cavities formed among the plurality of mesh cages arranged vertically and arranged between the base, the plurality of support rods and the support table. In the scheme, any net cage is small in size, can be arranged in artificial shell fish reefs with various structures and heights, and is convenient to use; in this scheme, set up the cylinder mould into the flexible connection structure who supports through a plurality of baffles, can carry out rational arrangement along with the requirement of the different shapes of the inner space of artifical shell fish reef, but the length that sets up of a polyethylene net section of thick bamboo adaptation is fixed convenient and fast more.

In a preferred scheme, the shellfish is at least one of mactra veneriformis, pacific oyster, meretrix, ruditapes philippinarum, bay scallop, chlamys farreri, common mussel and arca subcrenata; the sea weed is at least one of eel and Japanese eel; the Sargassum is at least one of Cyrtymenia Sparsa and thallus Gracilariae.

Example 2

A preparation method of the artificial shell fish reef comprises the following steps:

step one, pre-culture: planting sea grass seeds in the accommodating groove, additionally arranging a cover body, and placing the accommodating groove at a depth of 0-1.5m below the horizontal plane for culturing until the sea grass seeds germinate and grow into seedlings; meanwhile, clamping the seaweed seedlings on branch ropes of the mooring ropes, and placing the seaweed seedlings in a culture pond for culture; the culture conditions are as follows: salinity is 20-25 per mill, water temperature is 15-20 deg.C, and natural illumination is performed.

Step two, main body pouring preparation: the concrete pouring base I is provided with a plurality of support rods I, the lower ends of the support rods I are poured on the base I, the upper ends of the support rods I are mutually abutted and welded and fixed, and a plurality of net cages are bound in the base I and the support rods I; respectively binding the mooring ropes with the seaweeds in the step I to a plurality of supporting rods I;

the cement pouring base II is provided with a plurality of support rods II, the lower ends of the support rods II are poured on the base II, the upper ends of the support rods II are close to each other but do not conflict with each other, then a support table is poured, the containing groove with the seaweed seedlings in the step I is adhered and fixed on the support table, and a plurality of net cages are bound in containing cavities among the base II, the support rods II and the support table;

step three, arranging into the sea: arrange main part I and main part II with apart from sea level certain degree of depth department to set up hawser length and the arrangement degree of depth looks adaptation of main part I, make and float the ball and float in the sea, branch rope and marine alga float along with the wave, wherein, main part I and main part II draw close each other and set up to artifical shell fish reef crowd.

Wherein 1-2 cables are bound on one supporting rod I; 1-3 branch ropes are dispersedly arranged on one cable.

Example 3

Arranging the artificial shell fish reef obtained by the method for preparing the artificial shell fish reef of embodiment 2 in an underwater zone, wherein the three main bodies i and the three main bodies ii are arranged in a group, wherein a plurality of floating balls fixedly connected to the upper ends of a plurality of mooring ropes of the three main bodies i are respectively fixed to two floating ropes, and a plurality of floating balls on any one floating rope are sequentially connected in series, and the spacing distance between two adjacent floating balls on the same floating rope is 1.5 m;

the height of the main body I is 2m, the main body I is arranged at a depth of 7m below the sea level, and the branch ropes are arranged at a depth of 2-3m below the sea level; the height of the body II is 1.5m and is arranged at a depth of 3m below sea level.

The shellfish in the net cage is mactra quadrangularis, pacific oyster and clam in a weight ratio of 1:1: 1; the seaweed is eel grass; the Sargassum is Cyrtymenia Sparsa and thallus Gracilariae.

Example 4

The artificial shell fish reef obtained by the method for preparing the artificial shell fish reef of embodiment 2 is arranged in an underwater zone, wherein four main bodies i and five main bodies ii are arranged in a group, wherein a plurality of floating balls fixedly connected to the upper ends of a plurality of mooring ropes of three main bodies i are respectively fixed to two floating ropes, and a plurality of floating balls on any floating rope are sequentially connected in series, and the spacing distance between two adjacent floating balls on the same floating rope is 1.8 m.

The height of the main body I is 1.8m, the main body I is arranged at a depth of 6.5m below the sea level, and the branch ropes are arranged at a depth of 1-2m below the sea level; the height of the main body II is 1m, and the main body II is arranged at a depth of 5m below the sea level.

The shellfish in the net cage is Ruditapes philippinarum, Argopecten irradians, Chlamys farreri, Mytilus edulis and Arca subcrenata according to the weight ratio of 1:1:1:1: 1; the seaweed is eel grass; the seaweed is Gracilaria verrucosa.

Example 5

The artificial shell fish reef obtained by the method for preparing the artificial shell fish reef of embodiment 2 is arranged in an underwater zone, wherein six main bodies i and eight main bodies ii are arranged in a group, wherein a plurality of floating balls fixedly connected to the upper ends of a plurality of mooring ropes of three main bodies i are respectively fixed to two floating ropes, and a plurality of floating balls on any floating rope are sequentially connected in series, and the spacing distance between two adjacent floating balls on the same floating rope is 1.9 m.

The height of the main body I is 1.6m, the main body I is arranged at a depth of 5.5m below the sea level, and the branch ropes are arranged at a depth of 0-1m below the sea level; the height of the body II is 1.2m and is arranged at a depth of 4m below sea level.

The shellfish in the net cage is mactra veneriformis, pacific oyster, common mussel and blood clam in a weight ratio of 1:1:1: 1; the seaweed is Japanese eel grass; the Sargassum is Cyrtymenia Sparsa.

Comparative example 1

The sea area similar to the position of embodiment 3 is put in, and only three part of main bodies I with bases I and a plurality of supporting rods I and three part of main bodies II with bases II, a plurality of supporting rods II and a supporting platform are put in.

Comparative example 2

In a sea area similar to the throwing position of the embodiment 4, only four partial main bodies I with a base I and a plurality of support rods I and five partial main bodies II with a base II, a plurality of support rods II and a support platform are thrown.

Comparative example 3

The sea area similar to the position of example 4 is thrown in, and only six partial main bodies I with a base I and a plurality of supporting rods I and eight partial main bodies II with a base II, a plurality of supporting rods II and a supporting platform are thrown in.

Seashell fish reefs were released in laja gulf waters at 5 months in 2020 according to examples 3-5 and comparative examples 1-3, and release effect investigations were conducted at 7 months in 2020. 3 parallel samples with the volume of 30cm multiplied by 30cm of the shell in the cylinder mould of each example and the comparative example are respectively taken, 5 seaweed and 3 seaweed are respectively taken in each example, the attached organisms on the shell and the plants are washed off by seawater, and the species are identified under the stereoscope. The results of the investigation are shown in Table 1 below.

TABLE 1 Effect survey of fish reef throwing cases

	Number of fish reef attached organisms
		Example 3	26
Example 4	27
		Example 5	30
Comparative example 1	16
		Comparative example 2	20
Comparative example 3	17

The investigation results in table 1 above show that the number of the organisms attached to the fish reef obtained in examples 3-5 is significantly higher than that of the organisms attached to the fish reef in comparative examples 1-3, and mainly comes from the shellfish attached to the seaweed and seaweed, which indicates that the artificial shell fish reef provided by the present invention can provide a more heterogeneous habitat for the artificial shell fish reef after the main body i with seaweed and the main body ii with seaweed are reasonably arranged, and the diversity of the species in the artificial shell fish reef area is improved. Wherein, the dominant species of the fish reef attachment organisms in the examples 3-5 are mainly as follows: leptospira, Lepidoptera, Queensland juvenile odontopathy, Trichinella spearalis, Bombycis convexly, Uncaria brachypomus, and Macrobrachium orientalis; the species of the fish reef attachment organisms in comparative examples 1-3 were mainly: heterosporus, Lepidoptera, Trichophyton lanceolatus, Robustae Honda, Amygophyllum sinensis, and Prunus laevis.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.