阅读说明：本技术 一种三疣梭子蟹养殖用的多独立空间遮蔽装置 (Multi-independent space shielding device for portunus trituberculatus breeding ) 是由 王芳 朱柏杉 张涵尊 刘大鹏 于 2021-08-28 设计创作，主要内容包括：一种三疣梭子蟹养殖用的多独立空间遮蔽装置,包括三组管型遮蔽物、大小矩形遮蔽板、支撑板等,每组管型遮蔽物包括大、中、小三种管型的遮蔽管各一只,三种遮蔽管以大、中、小的顺序依次连接,内部相通且两端开口；三组管型遮蔽管并排设置,且相邻两个大管型遮蔽管进行粘连,相邻两个中管型遮蔽管之间以水平设置的进行连接,相邻两个小管型遮蔽管之间以水平设置的大矩形遮蔽板进行连接。本发明相较于传统的塑料筐遮蔽管,对池塘底部的利用效率和对蟹的保护效果大大提高,可提供更多的独立空间,且对幼蟹和蜕壳期的蟹均可提供有效保护。(A multi-independent space shielding device for culturing blue crabs comprises three groups of tubular shielding objects, a large rectangular shielding plate, a small rectangular shielding plate, a supporting plate and the like, wherein each group of tubular shielding objects comprises a large tubular shielding pipe, a medium tubular shielding pipe and a small tubular shielding pipe, the three shielding pipes are sequentially connected in a large sequence, a medium sequence and a small sequence, the interiors of the three shielding pipes are communicated, and two ends of the three shielding pipes are open; three group's cast shield the pipe and set up side by side, and two adjacent big cast shield the pipe and carry out the adhesion, and the cast shields to connect with the level setting between the pipe in two adjacent, and two adjacent little cast shield to connect with the big rectangle shielding plate of level setting between the pipe. Compared with the traditional plastic basket shielding pipe, the plastic basket shielding pipe has the advantages that the utilization efficiency of the bottom of the pond and the protection effect on crabs are greatly improved, more independent spaces can be provided, and the young crabs and the crabs in the molting period can be effectively protected.)

1. A multi-independent space shielding device for culturing blue crabs is characterized by comprising three groups of tubular shielding objects, wherein each group of tubular shielding object comprises a large tubular shielding tube, a middle tubular shielding tube and a small tubular shielding tube, the three shielding tubes are sequentially connected in a large sequence, a middle sequence and a small sequence, the interiors of the three shielding tubes are communicated, and openings are formed in two ends of the three shielding tubes;

the large tube type shielding tube (1) is connected with the middle tube type shielding tube (2) through a large annular connecting plate (8), and the middle tube type shielding tube (2) is connected with the small tube type shielding tube (3) through a small annular connecting plate (9);

the three groups of pipe-type shielding pipes are arranged side by side, two adjacent large pipe-type shielding pipes (1) are adhered, two adjacent middle pipe-type shielding pipes (2) are connected through a small rectangular shielding plate (4) which is horizontally arranged, and two adjacent small pipe-type shielding pipes (3) are connected through a large rectangular shielding plate (5) which is horizontally arranged;

the bottom of the middle pipe type shielding pipe (2) at the two sides is axially supported by an open rectangular support plate (6), the bottom of the middle pipe type shielding pipe (2) at the middle part is axially supported by a support plate (10), and the bottom of the small pipe type shielding pipe (3) is axially supported by a rectangular support plate (7);

the opening type rectangular support plate (6) is coplanar with the rectangular support plate (7) in the same group, and the support plate (10) is coplanar with the rectangular support plate (7) in the same group; a transverse supporting plate (11) is arranged between two adjacent middle pipe type shielding pipes (2), and the transverse supporting plate (11) is positioned at the junction of the middle pipe type shielding pipe (2) and the small pipe type shielding pipe (3).

2. The multiple independent space shielding device for blue crab cultivation according to claim 1, wherein the shielding tube is made of PVC, and the large tube type shielding tube (1): the diameter is 13-15cm, and the length is 10-12 cm; medium-tube type shielding tube (2): the diameter is 6-9cm, and the length is 8-10 cm; small tube type shielding tube (3): diameter: 3-5cm and 6-8cm in length;

little rectangle shielding plate (4) adopt the PVC material, long: 8-10cm, width: 6-8 cm; big rectangle shielding plate (5) adopt the PVC material, long: 6-8cm, width: 8-12 cm;

open type rectangular supporting plate (4) is made of PVC material and is long: 8-10cm, 3-4cm wide, and 5 × 2cm opening at the bottom; the support plate (10) is made of PVC material and is long: 8-10cm, 3-4cm wide;

rectangle backup pad (7) adopt the PVC material, long: 6-8cm in width and 5-7cm in width;

horizontal backup pad (11) adopt the PVC material, long: 10-14cm, width: 6-8 cm.

Technical Field

The invention relates to a multi-independent space shielding device for portunus trituberculatus breeding, and belongs to the technical field of aquaculture.

Background

The portunus trituberculatus is an important aquaculture variety in China, and is widely cultured in Shandong, Jiangsu, Hebei and other provinces in China. With the improvement of pond culture technology in recent years, the low survival rate caused by the struggle of residual food becomes the bottleneck limiting the development of industry. When the portunus trituberculatus is in the young crab stage, fighting for the cannibalism is very frequent, and the death rate is highest in the stage; in addition, the portunus trituberculatus has soft body and weak vitality when the portunus trituberculatus is exuviated, has no defense capability to the attack behavior of other individuals, and is very easy to be eaten by other individuals. The crayfish can be effectively relieved from the cannibalism by carrying out visual isolation and individual contact isolation. By utilizing the principle, laying the shielding pipe to provide a protection facility for the crabs is a common means in production, and the purposes of improving the yield and the breeding income are achieved. In addition, the investment of a proper shielding pipe can effectively reduce the activity of the crabs, reduce the breathing energy of the movement of the crabs, and enable more energy of the ingested baits to be used for growth, so that the growth rate and the quality are improved, the bait feeding amount is reduced, and the water body pollution caused by the bait feeding is reduced.

In the existing portunus trituberculatus breeding process, the shielding pipe most commonly put in is a square plastic basket, and the shielding pipe is simple and easy to obtain, but has a plurality of defects: each plastic basket can only provide an independent space, and the space utilization rate of the bottom of the pond is low; due to the specification change and the desquamation asynchronism in the crab growth period, the crabs with different specifications in the desquamation stage and the later molting stage cannot be shielded, and the protection effect is poor; the plastic basket has poor quality, and is likely to be broken after being soaked in seawater for a long time and being clamped by crabs for many times, so that the plastic basket cannot play a good protection role on the crabs. Perfecting and improving the shielding pipe is a requirement for improving survival rate, yield and economic benefit of crabs and is an important ring for green ecological breeding.

Disclosure of Invention

The invention aims to provide a multi-independent space shielding device for the pond culture of portunus trituberculatus, which overcomes the defects of the existing shielding tube.

A multi-independent space shielding device for culturing blue crabs is characterized by comprising three groups of tubular shielding objects, wherein each group of tubular shielding object comprises a large tubular shielding tube, a middle tubular shielding tube and a small tubular shielding tube, the three shielding tubes are sequentially connected in a large sequence, a middle sequence and a small sequence, the interiors of the three shielding tubes are communicated, and openings are formed in two ends of the three shielding tubes;

the large tube type shielding tube and the middle tube type shielding tube are connected by a large annular connecting plate, and the middle tube type shielding tube and the small tube type shielding tube are connected by a small annular connecting plate;

the three groups of pipe-type shielding pipes are arranged side by side, two adjacent large pipe-type shielding pipes are adhered, two adjacent middle pipe-type shielding pipes are connected by a small rectangular shielding plate arranged horizontally, and two adjacent small pipe-type shielding pipes are connected by a large rectangular shielding plate arranged horizontally;

the bottom of the middle pipe type shielding pipe at the two sides is axially supported by an open rectangular support plate, the bottom of the middle pipe type shielding pipe at the middle part is axially supported by a support plate, and the bottom of the small pipe type shielding pipe is axially supported by a rectangular support plate;

the opening type rectangular support plate is coplanar with the rectangular support plates in the same group, and the support plates are coplanar with the rectangular support plates in the same group; and a transverse supporting plate is arranged between two adjacent middle pipe type shielding pipes and is positioned at the junction of the middle pipe type shielding pipe and the small pipe type shielding pipe.

The device has the following characteristics:

1) the device is provided with three groups of tube-type shielding tubes, wherein each group of shielding tubes comprises a large tube-type shielding tube, a middle tube-type shielding tube and a small tube-type shielding tube;

2) the three shielding pipes in each group are arranged according to the size sequence and are connected and fixed by annular connecting plates with different specifications;

3) the large shielding pipes of the three groups of shielding pipes are arranged in a row, aligned and adhered;

4) the middle shielding pipes are connected and fixed by small rectangular shielding plates;

5) the small shielding pipes are connected and fixed by a large rectangular shielding plate;

6) the bottom of the middle shielding pipe at two sides is axially supported by an open rectangular support plate, and the bottom of the middle shielding pipe at the middle part is axially supported by a support plate;

7) the bottom of the small shielding pipe is axially supported by a rectangular support plate;

8) the tail end of the middle shielding pipe is provided with a transverse supporting plate which is connected with two adjacent middle shielding pipes;

9) all the components are connected by waterproof glass cement;

the invention can be divided into a plurality of independent spaces, the bottom of the pond is three-dimensional, the underwater space is fully utilized, and a plurality of individuals are effectively protected; can protect the individual which is easy to be attacked, such as young crab, crab in molting period, etc., so that the crab can pass through the fragile molting period and the later molting period; high quality and repeated use.

When the shielding tube is used for culturing the portunus trituberculatus, the normal culture measures such as feeding, water changing, disease control and the like are matched. Before crab larvae are thrown, sufficient shielding pipes are thrown into the bottom of the aquaculture pond, each shielding pipe comprises 13 independent spaces which are different in the shielding pipes and under the shielding plates, and the small independent spaces (the inner part of each small shielding pipe and the bottom of each middle shielding pipe) are at more hidden and safer positions.

The preferences of the crabs in different growth stages for the specification of the shielding pipes are different, and the crabs generally tend to enter the shielding pipes with the specifications slightly larger than the specifications of the shielding pipes, and are difficult to enter the small shielding pipes and threaten individuals in the small shielding pipes. For crabs which grow asynchronously, crabs with small specifications can obtain a safer space and are not easy to be caught by crabs with large specifications, and crabs with large specifications can be hidden in a large independent space (the inside of a medium-sized shielding pipe, the inside of a large shielding pipe and the bottom of a small shielding pipe) and cannot form threats to crabs in the small independent space. When the crabs exuviate, the device can also provide an independent space which is suitable for the specifications of the crabs so as to protect the crabs from the later period of exuviation. Compared with the traditional plastic basket shielding pipe, the plastic basket shielding pipe has the advantages that the utilization efficiency of the bottom of the pond and the protection effect on crabs are greatly improved, more independent spaces can be provided, and the young crabs and the crabs in the molting period can be effectively protected.

Drawings

Fig. 1 is a perspective view of the present invention.

FIG. 2 is a bottom schematic view of the present invention.

Fig. 3 is a rear view of the present invention.

Wherein, 1-large tube type shielding tube, 2-middle tube type shielding tube; 3-small tube type shielding tube; 4-small rectangular shielding plate; 5-large rectangular shielding plate; 6-open type rectangular support plate; 7-a rectangular support plate; 8-a large annular web; 9-small annular connecting plate; 10-a support plate; 11-transverse support plate.

Detailed Description

The invention is further illustrated by the following detailed description in conjunction with the accompanying drawings.

Referring to fig. 1-3, a multi-independent space shielding device for culturing portunus trituberculatus is characterized by comprising three groups of tubular shielding objects, wherein each group of tubular shielding objects comprises a large tubular shielding tube, a middle tubular shielding tube and a small tubular shielding tube, the three shielding tubes are sequentially connected in a large sequence, a middle sequence and a small sequence, the interiors of the three shielding tubes are communicated, and two ends of the three shielding tubes are open;

the large tubular shielding tube 1 is connected with the middle tubular shielding tube 2 through a large annular connecting plate 8, and the middle tubular shielding tube 2 is connected with the small tubular shielding tube 3 through a small annular connecting plate 9;

the three groups of pipe-type shielding pipes are arranged side by side, two adjacent large pipe-type shielding pipes 1 are adhered, two adjacent middle pipe-type shielding pipes 2 are connected through a small rectangular shielding plate 4 which is horizontally arranged, and two adjacent small pipe-type shielding pipes 3 are connected through a large rectangular shielding plate 5 which is horizontally arranged;

the bottom of the middle pipe type shielding pipe 2 at the two sides is axially supported by an open rectangular support plate 6, the bottom of the middle pipe type shielding pipe 2 at the middle part is axially supported by a support plate 10, and the bottom of the small pipe type shielding pipe 3 is axially supported by a rectangular support plate 7;

the open type rectangular support plate 6 is coplanar with the rectangular support plate 7 in the same group, and the support plate 10 is coplanar with the rectangular support plate 7 in the same group; a transverse supporting plate 11 is arranged between two adjacent middle pipe type shielding pipes 2, and the transverse supporting plate 11 is positioned at the junction of the middle pipe type shielding pipe 2 and the small pipe type shielding pipe 3.

As shown in fig. 1, the present invention includes a triple-tube type shield, a rectangular shield plate, and a rectangular support plate. Each set of tubular shutters includes one each of three tubular shutter tubes, shutter tube material: PVC, large tubular shielding tube 1: the diameter is 13-15cm, and the length is 10-12 cm; middle tube type shielding tube 2: the diameter is 6-9cm, and the length is 8-10 cm; small tube type shielding tube 3: diameter: 3-5cm and 6-8cm in length.

The shields of each group are respectively connected by a large annular connecting plate 8 and a small annular connecting plate 9 and are fixed by PVC glue in an adhesion way, and the large annular connecting plate 8 and the small annular connecting plate 9 are made of materials: PVC.

Aligning the adhered shielding pipes, horizontally placing the shielding pipes side by side, and adhering the large shielding pipes 1 of all the groups by using PVC glue.

Connecting the middle shielding pipes 2 of each group by using a small rectangular shielding plate 4 and fixing the middle shielding pipes by using PVC glue, wherein the small rectangular shielding plate 4 is made of: PVC, long: 8-10cm, width: 6-8 cm; connecting the small shielding pipes 3 of each group by using a large rectangular shielding plate 5 and fixing the small shielding pipes by using PVC glue, wherein the large rectangular shielding plate 5 is made of the following materials: PVC, long: 6-8cm, width: 8-12 cm.

The open type rectangular support plate 6 is axially fixed at the lower part along the middle shielding pipes 2 at both sides, and the support plate 10 is axially fixed at the lower part along the middle shielding pipes 2 at the middle part and is fixed by PVC glue.

Open rectangular support plate 6 material: PVC, long: 8-10cm, 3-4cm wide, and 5 × 2cm opening at the bottom; material of the support plate 10: PVC, long: 8-10cm, 3-4cm wide and no opening at the bottom.

Fix rectangular support plate 7 in little shielding 3 lower parts of pipe along the axial to it is fixed with PVC glue, rectangular support plate 7 material: PVC, long: 6-8cm in width and 5-7cm in width.

The transverse supporting plate 11 is transversely connected with two adjacent middle shielding pipes 2 at the tail ends of the middle shielding pipes 2 and is fixed by PVC glue; transverse support plate 11 material: PVC, long: 10-14cm, width: 6-8 cm.

In the pond culture of the portunus trituberculatus, a sufficient amount of the shielding pipes are placed at the bottom of the pond before the seedlings are put, the shielding pipes comprise up to 13 independent spaces, and the independent spaces are different in size. Along with the growth of the crabs, the independent spaces suitable for the specifications of the crabs are changed, and the crabs can select the independent spaces suitable for the specifications of the crabs. When the size of the crabs is increased after the crabs exuviate, the crabs cannot enter a smaller shielding space and cannot prey on individuals with small sizes; after the crabs exuviate, the shielding pipe can also provide a proper independent space for the crabs to avoid and spend the later period of exuviation, so that the high cannibalism rate and the high death rate caused by asynchronous growth and asynchronous exuviation of the crabs in the culture process are reduced, and the yield and the culture income are improved. The shielding pipe can provide more independent spaces with various specifications, has higher space utilization rate on the bottom of the pond, and can provide better shielding effect on the portunus trituberculatus; the structure is simple, the materials are easy to obtain, the cost is low, and batch production can be realized according to the requirements in large-scale pond culture; the feed can be recycled and cleaned after the culture period of the current year is finished and can be reused; the specifications and the structures can be improved according to the requirements, and the cultivation of various crustaceans such as blue crabs, river crabs, crayfish and the like is completed.

The foregoing description and examples have described the general principles and structural components of the present invention. The specific application is not limited by the examples in the above description, which only illustrates the principle of the present invention, and the present invention can make various modifications and changes, such as changing the material, shape, specification and the number of the tube-type shielding tube groups, changing the connection mode between the shielding tubes and the supporting mode of the shielding tubes, etc., without departing from the guidance of the above basic principle of the present invention, and the modifications and changes are within the protection scope of the present invention.