阅读说明：本技术 一种提升贝类浮筏养殖区海底营养盐的装置及方法 (Device and method for improving seabed nutrient salt in shellfish floating raft culture area ) 是由 王昆 宋伦 吴金浩 王召会 宋广军 赵海勃 李楠 杜静 田金 柳岩 于 2021-10-18 设计创作，主要内容包括：本发明公开一种提升贝类浮筏养殖区海底营养盐的装置及方法,贝类浮筏包括浮筏、连接在海底与浮筏之间的限位缆绳；提升贝类浮筏养殖区海底营养盐装置包括设置在海底上的底筏,底筏上固定设置有若干组喷射管,每组喷射管上开设有若干个喷口；喷射管连通有空气导管,空气导管上连接有上增压机构和下增压机构。本发明利用上增压机构和下增压机构为空气导管将海面上方的气体导入到海底提供动力,形成气幕,使筏式养殖区产生上升流,从而将营养盐含量较高的底层水提升至表层,供给饵料微藻生长,提高养殖区域饵料微藻的丰度,提升筏区初级生产力,进而提高筏养贝类的成活率和产量,同时能增加表层水体中的溶解氧,进而起到优化养殖区海水环境的作用。(The invention discloses a device and a method for improving nutritive salt at the sea bottom of a shellfish buoyant raft culture area, wherein the shellfish buoyant raft comprises a buoyant raft and a limiting cable connected between the sea bottom and the buoyant raft; the device for lifting the nutritive salt at the sea bottom in the shellfish floating raft culture area comprises a bottom raft arranged on the sea bottom, wherein a plurality of groups of injection pipes are fixedly arranged on the bottom raft, and a plurality of nozzles are formed in each group of injection pipes; the injection pipe is communicated with an air conduit, and the air conduit is connected with an upper pressurizing mechanism and a lower pressurizing mechanism. The invention utilizes the upper pressurizing mechanism and the lower pressurizing mechanism to provide power for guiding the air above the sea surface into the seabed by the air conduit to form an air curtain, so that the raft culture area generates upward flow, thereby lifting the bottom water with higher nutrient salt content to the surface layer, supplying bait microalgae for growth, improving the abundance of the bait microalgae in the culture area, improving the primary productivity of the raft area, further improving the survival rate and the yield of shellfish cultured in the raft, simultaneously increasing dissolved oxygen in the surface water body, and further playing a role in optimizing the seawater environment of the culture area.)

1. The utility model provides a promote device of shellfish buoyant raft culture zone seabed nutritive salt which characterized in that: the shellfish buoyant raft comprises a buoyant raft (1) and a limiting cable (2) connected between the sea bottom and the buoyant raft (1), wherein the limiting cable (2) is connected with the sea bottom through a fixed anchor (3);

the device for lifting the nutritive salt at the sea bottom of the shellfish buoyant raft culture area comprises a bottom raft (4) arranged on the sea bottom, wherein a plurality of groups of injection pipes (5) are fixedly arranged on the bottom raft (4), and a plurality of nozzles (6) are arranged on each group of injection pipes (5); injection pipe (5) intercommunication has air conduit (7), the one end of air conduit (7) is run through buoyant raft (1) and stretch out the sea, be connected with booster mechanism and lower booster mechanism on air conduit (7).

2. The device for lifting nutritive salt at the sea bottom of the shellfish raft culture area as recited in claim 1, wherein: be provided with between raft (1) and end raft (4) a plurality of groups anchor rope (8), every group fixedly connected with breed cage (9) on anchor rope (8), spout (6) of injection pipe (5) are upwards sprayed perpendicularly, just spout (6) set up adjacently breed between cage (9).

3. The device for lifting nutritive salt at the sea bottom of the shellfish raft culture area as recited in claim 1, wherein: the floating raft (1) comprises an upper raft body (10) and a lower raft body (11) which are distributed from top to bottom, the upper raft body (10) and the lower raft body (11) are respectively arranged on the upper side and the lower side of the sea surface, a plurality of groups of stalk ropes (12) are fixedly connected with the lower raft body (11), each group of stalk ropes (12) is fixedly connected with a floating ball (13), and the floating ball (13) floats between the upper raft body (10) and the sea surface.

4. The device for lifting nutritive salt at the sea bottom of the shellfish raft culture area of claim 3, wherein: the outside cover of air conduit (7) is equipped with isolation tube (14), the one end and the end raft (4) fixed connection of isolation tube (14), the other one end of isolation tube (14) is run through go up raft body (10) and lower raft body (11) and stretch out the sea, one side fixedly connected with limiting plate (15) of sea are stretched out in isolation tube (14).

5. The device for lifting nutritive salt at the sea bottom of the shellfish raft culture area as recited in claim 1, wherein: go up booster mechanism and include air pump (16), air pump (16) are connected with energy supply mechanism.

6. The device for lifting nutritive salt at the sea bottom of the shellfish raft culture area of claim 5, wherein: energy supply mechanism includes a plurality of solar cell panel (17), a plurality of groups solar cell panel (17) electric connection has energy storage battery, air pump (16) and energy storage battery electric connection, air pump (16) and the energy storage battery outside all are provided with sealed casing.

7. The device for lifting nutritive salt at the sea bottom of the shellfish raft culture area as recited in claim 1, wherein: the raft bottom (4) comprises a raft bottom body (18), a plurality of groups of fixed mooring ropes (19) are fixedly connected to the lower portion of the raft bottom body (18), and the fixed mooring ropes (19) are fixedly connected with seeds (20).

8. The device for lifting nutritive salt at the sea bottom of the shellfish raft culture area as recited in claim 1, wherein: lower booster mechanism is including sealed pressure boost case (21), sealed pressure boost case (21) internal fixation is provided with air booster pump (22), the inlet end and air conduit (7) the intercommunication of air booster pump (22), the end of giving vent to anger of air booster pump (22) is linked together with injection pipe (5), air booster pump (22) are driven through drive shaft (23), fixedly connected with turbine blade (24) on drive shaft (23).

9. A method for lifting nutritive salt at the sea bottom of a shellfish raft culture area, which is based on the device for lifting nutritive salt at the sea bottom of a shellfish raft culture area as claimed in any one of claims 1-8, and is characterized in that: the method comprises the following steps:

s1, installing a floating raft (1) and a bottom raft (4), fixing the floating raft (1) through a limiting cable (2) and a fixing anchor (3), and arranging the bottom raft (4) on the seabed;

s2, an air guide pipe (7) is installed, one end of the air guide pipe (7) is communicated with the jet pipe (5), the other end of the air guide pipe (7) extends out of the sea level, an upper pressurizing mechanism and a lower pressurizing mechanism are installed on the air guide pipe (7), and water in the jet pipe (5) is emptied;

and S3, the upper pressurizing mechanism and the lower pressurizing mechanism work, gas is conveyed to the injection pipe (5) through the air guide pipe (7) and is discharged through the nozzle (6) to form an air curtain to guide the flow to the sea surface, and the air curtain drives the sea bottom water to rise.

10. The device for lifting nutritive salt at the sea bottom of the shellfish raft culture area as recited in claim 1, wherein: in S3, the electric quantity generated by the solar panel (17) is stored in an energy storage battery, and the energy storage battery provides electric energy for the air pump (16); the water flow of the seabed drives the turbine blades (24) to rotate, and the helical blades drive the driving shaft (23) to rotate, so that the air booster pump (22) is driven to work to realize secondary pressurization of gas.

Technical Field

The invention mainly relates to the technical field of shellfish culture equipment, can be widely applied to lifting bottom seawater to a surface layer and increasing the nutritive salt of a surface water body, and particularly relates to a device and a method for lifting the nutritive salt of the sea bottom in a shellfish raft culture area.

Background

The proper development of the shallow sea shellfish culture can not only provide a large amount of high-quality marine products for human beings, but also effectively control the eutrophication of the sea and prevent the occurrence of red tide, has obvious ecological environmental benefit and is a win-win human production activity. The existing shellfish culture method mainly comprises bottom sowing culture, inserted column culture, long rope type culture, fixed frame culture, raft culture and the like; with the development of offshore raft culture industry, the scale of shallow sea raft shellfish culture in China is continuously enlarged, large-area culture raft type seasurface appears, the spatial arrangement of the whole raft body has certain influence on the hydrodynamic force exchange performance of a water body in a culture area, the hydrodynamic force characteristics of the culture area and an adjacent sea area are changed, and meanwhile, the material transportation and diffusion capacity of the sea area is weakened.

The shellfish bait comprises natural zooplankton, unicellular algae and the like, the traditional culture mode utilizes the natural zooplankton and the unicellular algae in seawater as basic bait, but the mode cannot meet the requirement of normal growth of shellfish. In recent years, shellfish culture has the phenomena that shellfish growth situations at the two outermost sides of raft areas are good, shellfish growth situations in the middle raft areas are poor, and even shellfish growth stagnation or large-scale death occurs; research teams find that the major cause of large-scale death of raft-cultured shellfish is death due to the lack of bait, namely, the reason is that the hydrodynamic conditions of a culture area are limited by the influence of a raft body, so that smoothness of nutrient salt and bait conveying is hindered, organic matters, nutrient salt and other substances required by growth and reproduction of marine microalgae, natural zooplankton and the like in seawater are lack, and the bait supply capacity of shellfish is low, so that the large-scale death of raft-cultured shellfish is caused; organic matters and nutritive salts are often in the sea bottom, and the nutritive salts in the sea bottom are difficult to be conveyed to the sea surface true light layer due to the influence of the thermocline and the saltline in the water depth sea area, so that the marine microalgae and natural zooplankton in the sea water are insufficient for feeding.

Disclosure of Invention

The invention aims to provide a device and a method for improving nutritive salt at the sea bottom of a shellfish floating raft culture area, so as to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a device for improving nutritive salt at the sea bottom in a shellfish floating raft culture area.

The device for lifting the nutritive salt at the sea bottom in the shellfish floating raft culture area comprises a bottom raft arranged on the sea bottom, wherein a plurality of groups of injection pipes are fixedly arranged on the bottom raft, and a plurality of nozzles are arranged on each group of injection pipes; the injection pipe intercommunication has air conduit, air conduit's one end is run through the buoyant raft just stretches out the sea, the last booster mechanism and the lower booster mechanism of being connected with of air conduit.

Preferably, a plurality of groups of anchor ropes are arranged between the buoyant raft and the bottom raft, each group of anchor ropes is fixedly connected with a cultivation cage, the nozzles of the jet pipes vertically and upwards jet, and the nozzles are arranged between the adjacent cultivation cages.

Preferably, the buoyant raft includes upper raft body and lower raft body that distributes from top to bottom, just upper raft body and lower raft body divide and establish both sides about the sea, lower raft body fixedly connected with a plurality of groups stalk rope, every group the equal fixedly connected with floater of stalk rope, the floater floats between upper raft body and the sea.

Preferably, the outside cover of air conduit is equipped with the isolation tube, the one end and the end raft fixed connection of isolation tube, the other one end of isolation tube is run through go up the raft body and stretch out the sea with lower raft body, one side fixedly connected with limiting plate that the isolation tube stretches out the sea.

Preferably, go up booster mechanism and include the air pump, the air pump is connected with energy supply mechanism.

Preferably, the energy supply mechanism comprises a plurality of groups of solar cell panels, a plurality of groups of solar cell panels are electrically connected with energy storage batteries, the air pump is electrically connected with the energy storage batteries, and sealing shells are arranged on the outer sides of the air pump and the energy storage batteries.

Preferably, the raft comprises a raft body, a plurality of groups of fixed cables are fixedly connected below the raft body, and the fixed cables are fixedly connected with seeds.

Preferably, booster mechanism is including sealed pressure boost case down, sealed pressure boost incasement fixation is provided with the air booster pump, the inlet end and the air conduit intercommunication of air booster pump, the end of giving vent to anger of air booster pump is linked together with the injection pipe, the air booster pump passes through the drive shaft drive, fixedly connected with turbine blade on the drive shaft.

A method for improving nutritive salt at the sea bottom of a shellfish buoyant raft culture area comprises the following steps:

s1, installing a floating raft and a bottom raft, fixing the floating raft through a limiting cable and a fixed anchor, and arranging the bottom raft on the seabed;

s2, an air guide pipe is installed, one end of the air guide pipe is communicated with the injection pipe, the other end of the air guide pipe extends out of the sea surface, an upper pressurizing mechanism and a lower pressurizing mechanism are installed on the air guide pipe, and water in the injection pipe is emptied;

and S3, the upper pressurizing mechanism and the lower pressurizing mechanism work, gas is conveyed to the injection pipe through the air guide pipe and is discharged through the nozzle to form an air curtain to guide the flow to the sea surface, and the air curtain drives the sea bottom water to rise.

Preferably, in S3, the electric quantity generated by the solar panel is stored in an energy storage battery, and the energy storage battery provides electric energy for the air pump; the water flow at the seabed drives the turbine blades to rotate, and the helical blades drive the driving shaft to rotate, so that the air booster pump is driven to work to realize secondary pressurization of the gas.

The invention discloses the following technical effects: the invention adopts a manual intervention mode, utilizes the upper pressurizing mechanism and the lower pressurizing mechanism to guide the gas above the sea surface into the seabed for providing power for the air conduit, and sprays the gas out through the injection pipe and the nozzle arranged above the injection pipe to form an air curtain, and enables the raft culture area to generate upwelling according to the Bernoulli energy conservation equation of the water body and the principle of the air curtain method, so as to convey substances such as seabed nutrient salt and the like required by economic organisms in the culture area to the upper part along with the air curtain, thereby greatly increasing the dissolved oxygen in the surface water body, improving the water quality, improving the abundance of the bait microalgae in the culture area, improving the survival rate and the yield of the raft cultured shellfish, reducing the culture cost, improving the effective utilization rate of the seabed nutrient salt, further improving the biological yield, and ensuring the economic benefits of culturists and enterprises.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a device for increasing nutritive salt at the sea bottom of a shellfish raft culture area according to the present invention;

FIG. 2 is a schematic view of the structure of the air curtain of the present invention;

FIG. 3 is a schematic view of the injector tube configuration of the present invention;

FIG. 4 is a schematic view of the nozzle structure of the present invention;

wherein, 1 is the buoyant raft, 2 is spacing hawser, 3 is the anchor, 4 is end raft, 5 is the injection pipe, 6 is the spout, 61 is the fumarole, 7 is the air conduit, 8 is the hawser, 9 is the breed cage, 10 is the upper raft body, 11 is the lower raft body, 12 is the stalk rope, 13 is the floater, 14 is the isolation tube, 15 is the limiting plate, 16 is the air pump, 17 is solar cell panel, 18 is the end raft body, 19 is the fixed hawser, 20 is the mating, 21 is sealed pressure boost case, 22 is the air booster pump, 23 is the drive shaft, 24 is turbine blade.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-4, the invention provides a device for lifting nutritive salt at the sea bottom of a shellfish raft culture area, wherein the shellfish raft comprises a raft 1 and a limiting cable 2 connected between the sea bottom and the raft 1, and the limiting cable 2 is connected with the sea bottom through a fixed anchor 3; buoyant raft 1 includes fixed connection and upper raft body 10 and lower raft body 11 that distributes from top to bottom, and upper raft body 10 and lower raft body 11 divide and establish both sides about the sea, lower raft body 11 fixedly connected with a plurality of groups stalk rope 12, the equal fixedly connected with floater 13 of every group stalk rope 12, floater 13 floats between upper raft body 10 and the sea, provide buoyancy for whole shellfish buoyant raft and promotion shellfish buoyant raft culture zone seabed nutritive salt device through multiunit floater 13, and connect buoyant raft 1 and seabed through spacing hawser 2 and set anchor 3, restrict shellfish buoyant raft and include buoyant raft 1's position, prevent that it from drifting away along with the wave.

The device for lifting the nutritive salt at the sea bottom in the shellfish buoyant raft culture area comprises a bottom raft 4 arranged on the sea bottom, wherein a plurality of groups of injection pipes 5 are fixedly arranged on the bottom raft 4, a plurality of nozzles 6 are arranged on each group of injection pipes 5, each nozzle 6 comprises two groups of annular nozzles which are concentrically arranged, a plurality of groups of air pipes are communicated between the two groups of annular nozzles, and a plurality of groups of air holes 61 are arranged on the two groups of annular nozzles and the air pipes, so that the nozzles 6 form columnar plume; the injection pipe 5 is communicated with an air conduit 7, one end of the air conduit 7 penetrates through the floating raft 1 and extends out of the sea surface, and the air conduit 7 is connected with an upper pressurizing mechanism and a lower pressurizing mechanism.

Meanwhile, the floating raft 1 is of a split structure, the upper raft body 10 is arranged above the sea surface, so that an installation position is provided for the solar cell panel and related equipment, and the solar cell panel and the related equipment are prevented from being contacted with seawater; the lower raft body 11 is arranged below the sea surface, a plurality of groups of anchor ropes 8 are arranged between the lower raft body 11 and the bottom raft 4, each group of anchor ropes 8 is fixedly connected with a culture suspension cage 9, shellfish is cultured in the culture suspension cage 9, and the position of the culture suspension cage 9 is limited by the anchor ropes 8. The spout 6 of the injection pipe 5 vertically sprays upwards, and the spout 6 is arranged between the adjacent cultivation suspension cages 9, so that the air curtain is prevented from directly blowing to the net cage to influence the growth and life of the shellfish. The inner parts of the nozzles 6 of the injection pipes 5 are all provided with one-way valves to prevent seawater from entering the nozzles 6 of the injection pipes 5.

The raft 4 comprises a raft body 18, a plurality of groups of fixed mooring ropes 19 are fixedly connected below the raft body 18, the fixed mooring ropes 19 are fixedly connected with a mating 20, the mating 20 can prevent the raft 4 from drifting along with sea waves, and meanwhile, the raft body 18 and the sea bottom surface can be isolated to prevent substances in the sea bottom from burying the raft. The bottom raft body 18, the upper raft body 10 and the lower raft body 11 are all in the prior art and are all formed by fixedly connecting pipes such as steel pipes and the like, and are not described herein.

The outside cover of air conduit 7 is equipped with isolation tube 14, and isolation tube 14's one end and end raft 4 fixed connection, isolation tube 14's other one end run through upper raft body 10 and lower raft body 11 and stretch out the sea, and isolation tube 14 stretches out one side fixedly connected with limiting plate 15 of sea, and limiting plate 15 prevents isolation tube 14 under the effect such as wave and morning and evening and from floating raft 1 and end raft 4 separation. Meanwhile, the isolation pipe 14 is a flexible pipe capable of being bent, the isolation pipe 14 ensures that the air conduit 7 inside the isolation pipe prevents or reduces the influence of seawater pressure on the isolation pipe, the pressure required by the upper pressurizing mechanism and the lower pressurizing mechanism is reduced, and the energy consumption required by the operation of the upper pressurizing mechanism and the lower pressurizing mechanism is reduced. Meanwhile, the end part of the isolation pipe 14 penetrates through the upper raft body 10 and the lower raft body 11 and is a movable end, the isolation pipe 14 can ensure that the air conduit 7 is not influenced by the outside under the condition of tide rising and tide falling, and seawater cannot enter the isolation pipe 14.

The upper supercharging mechanism comprises an air pump 16, and the air pump 16 is connected with an energy supply mechanism. Energy supply mechanism includes a plurality of solar cell panel 17 of group, and a plurality of solar cell panel 17 electric connection of group have energy storage battery, and air pump 16 and energy storage battery electric connection all are provided with sealed casing in the air pump 16 and the energy storage battery outside. Solar cell panel 17 generates electricity and with electric energy storage in the energy storage battery under irradiant effect, and the energy storage battery provides the electric energy again for air pump 16, guarantees that it can normally work, and the energy storage battery can get up the electric energy storage, guarantees that air pump 16 normally works at overcast and rainy weather and night.

The lower supercharging mechanism comprises a sealed supercharging box 21, an air supercharging pump 22 is fixedly arranged in the sealed supercharging box 21, the air inlet end of the air supercharging pump 22 is communicated with an air guide pipe 7, the air outlet end of the air supercharging pump 22 is communicated with an injection pipe 5, the air supercharging pump 22 is driven by a driving shaft 23, and a turbine blade 24 is fixedly connected to the driving shaft 23. The water on the sea bottom has fluidity, and under the action of seawater impact, the turbine blades 24 rotate to drive the driving shaft 23 to rotate, so that the air booster pump 22 works, and the gas in the air conduit 7 is pressurized for the second time, thereby reducing the pressure required by the air pump, reducing the power required by the air pump and reducing the energy consumption.

A method for improving nutritive salt at the sea bottom of a shellfish buoyant raft culture area comprises the following steps

S1, installing a floating raft 1 and a bottom raft 4, fixing the floating raft 1 through a limiting cable 2 and a fixing anchor 3, and arranging the bottom raft 4 on the seabed;

s2, installing an air guide pipe 7, wherein one end of the air guide pipe 7 is communicated with the jet pipe 5, the other end of the air guide pipe 7 extends out of the sea surface, an upper pressurizing mechanism and a lower pressurizing mechanism are installed on the air guide pipe 7, and water in the jet pipe 5 is emptied;

and S3, the upper pressurizing mechanism and the lower pressurizing mechanism work, gas is conveyed to the injection pipe 5 through the air guide pipe 7 and is discharged through the nozzle 6 to form an air curtain to guide the flow to the sea surface, and the air curtain drives the sea bottom water to rise. The electric quantity generated by the solar cell panel 17 is stored in an energy storage battery, and the energy storage battery provides electric energy for the air pump 16; the water flow in the sea bottom drives the turbine blades 24 to rotate, and the helical blades drive the driving shaft 23 to rotate, so that the air booster pump 22 is driven to work to realize secondary pressurization of the gas.

The device is designed in the floating raft culture area, and the device can convey nutritive salt at the sea bottom of the sea area to the surface of seawater and supply the nutritive salt for microalgae growth. The fishing ground area basically has seawater upwelling, and the culturing farm is also basically built around the sea area with the characteristic water body in the sea area with relatively strong upwelling stream. The device adopts a direct thought by means of the self power trend of the water body, so that the sea area without upwelling generates upwelling, and the flow potential of the sea area with smaller upwelling is enhanced. The invention adopts a manual intervention mode, utilizes an upper pressurizing mechanism and a lower pressurizing mechanism to guide gas above the sea surface into the seabed for providing power for an air conduit, and sprays the gas through an injection pipe and a nozzle arranged above the injection pipe to form an air curtain, and enables a raft culture area to generate upward flow according to the Bernoulli energy conservation equation of water and the principle of the air curtain method, so that substances such as nutritive salt and the like on the seabed are upwards conveyed along the air curtain to supply bait microalgae for growth, the abundance of the bait microalgae in the culture area is improved, the survival rate and the yield of shellfish cultured in raft are improved, the culture cost is reduced, the effective utilization rate of the nutritive salt on the seabed is improved, the biological yield is further improved, and the economic benefit of farmers and enterprises is ensured.

The sample of the device is applied to a scallop culture raft field in Changhai county of Dalian city, Liaoning province in a demonstration mode, and the specific process is as follows:

firstly, the hydrodynamic force distribution characteristics of the sea area are calculated by using methods such as an empirical formula, a model test or a numerical simulation, and the like, so that the space exchange performance of the water body is evaluated, and the placement position is scientifically and reasonably determined.

Secondly, the product is released and observed in the area of the culture raft, and the constitutive relation of the product is obtained through multiple experiments based on the least square method principle of multivariate first-order numerical approximation. Namely:

F＝F(A，h，U，W，S，d，n) (1)

in the formula, F represents power (reading of a generator), A represents raft area, h represents water depth, U represents flow velocity of water respectively, W represents power of a pump, S represents biomass, and d and n represent diameter and number of air guide holes respectively.

The obtained experimental relationship data pair is (A)₁,h₁,U₁,W₁,S₁,d₁,n₁,F₁)、(A₂,h₂,U₂,W₂,S₂,d₂,n₂,F₂)、(A₃,h₃,U₃,W₃,S₃,d₃,n₃,F₃)、(A₄,h₄,U₄,W₄,S₄,d₄,n₄,F₄)、(A₅,h₅,U₅,W₅,S₅,d₅,n₅,F₅)、(A₆,h₆,U₆,W₆,S₆,d₆,n₆,F₆)、(A₇,h₇,U₇,W₇,S₇,d₇,n₇,F₇)；

Using a standard version of the least squares method, let:

F_meter＝F(A，h，U，W，S，d，n)＝a₀+a₁A+a₂h+a₃U+a₄W+a₅S+a₆d+a₇n (2)

Definition using the minimum of the sum of squares of the dispersion as the basis for optimization:

φ＝∑(F_i-F_meter)2 (3)

In this case, formula (2) is substituted for formula (3).

When phi ═ sigma (F)_i-F_Meter) When 2 is minimum, the function phi can be used to a₀、a₁、a₂、a₃、a₄、a₅、a₆、a₇The partial derivatives are each found to be equal to zero. Then, the information about a is obtained₀、a₁、a₂、a₃、a₄、a₅、a₆、a₇Solving the 8-element linear system of 8 unknownsA is obtained by a system of equations₀、a₁、a₂……a₇The value of (c).

Finally, a is put₀、a₁、a₂、a₃、a₄、a₅、a₆、a₇All the equations are substituted into the expression (2), and the expression (2) at this time is a regression linear equation, which is specifically called as an expression of a least square method, namely a mathematical model on which constitutive relations are formed in the invention.

The body length, the number and the weight of the scallops are respectively recorded in a typical period of scallop cultivation and compared with the growth information in the same period in the past, and the technical scheme of the invention is found to be effective indeed.

The survival rate of the first-instar shellfishes in the test area is improved by 28 percent and the fresh weight is improved by 18 percent compared with the survival rate of the control area in the test area, and the survival rate of the second-instar shellfishes in the test area is improved by 16 percent and the fresh weight is improved by 25 percent compared with the survival rate of the control area in the test area in the 10-month experiment period.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.