A high-density environmentally-friendly culture method and culture equipment for procambarus clarkii

Abstract

A high-density environmentally-friendly culture method and culture equipment for procambarus clarkii, relates to the technical field of culture method, comprising the following steps: S1, providing several culture ponds, the size of the culture ponds is different, to culture shrimp fry with different development stages; S2, adding shrimp fry in the smallest culture pond; S3, after the shrimp fry develops to a certain size, the shrimp fry is transferred to a larger culture pond, the original culture pond is cleaned, and a new batch of shrimp fry is added to the original culture pond; S4, repeat step S3 until the shrimp fry develops to a specified size. By using culture ponds of different sizes to culture shrimp fry of different development levels, on the one hand, the utilization efficiency of the culture space can be improved, on the other hand, the amount of water and feed used for culture can be adjusted according to the development level, avoiding excessive water use and overfeeding, thereby reducing the degree of environmental pollution during culture.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of breeding methods, and in particular to a high-density environment-friendly breeding method for Procambarus clarkii and a breeding device. BACKGROUND

[0002] Procambarus clarkii (small crayfish) is an important freshwater economic shrimp with a large market demand. In particular in China, Procambarus clarkii has become a star product in the late-night snack market, and therefore the market demand is extremely large. Procambarus clarkii has strong adaptability to the environment and can grow in various water bodies such as lakes, ponds, ditches and paddy fields. In order to avoid pollution during breeding, the environment-friendly breeding method is usually used for Procambarus clarkii at present.

[0003] The application patent No. CN117256547A discloses a small crayfish low-carbon environment-friendly ecological breeding device and a breeding method thereof, which comprises a base, a water tank is fixedly connected to the top end of the base, a partition plate is fixedly connected to the inside of the water tank, the inside of the water tank is divided into a breeding chamber and a cleaning chamber by the partition plate, a breeding box is slidably arranged in the breeding chamber, a lifting part is fixedly connected to the side wall of the breeding box, the lifting part is located outside the water tank and is fixedly connected to the top end of the base, a water circulation mechanism is connected to the water tank, the water circulation mechanism is fixedly connected to the top end of the base, a lifting feeding mechanism is fixedly connected to the top of the outer wall of the water tank, the lifting feeding mechanism corresponds to the breeding box, a residue cleaning part is fixedly connected to the bottom end of the inside of the water tank, a residue discharging part is arranged in the cleaning chamber, the residue cleaning part corresponds to the residue discharging part, a solar cell panel is further arranged on the top end of the base, and the lifting part, the water circulation mechanism, the lifting feeding mechanism, the residue cleaning part and the residue discharging part are electrically connected to the solar cell panel. The pollution can be cleaned in the cleaning chamber to achieve the purpose of environmental protection, but the separate breeding box makes the breeding efficiency of the breeding device low.

[0004] Chinese Patent Publication No. CN114365714A discloses a low-carbon aquaculture device for tiger prawns. The main structure includes a culture pond, aeration pipes, hot water pipes, a propeller pump, and a suspended bed. The suspended bed replaces the bottom sand in existing technologies. From the inside out, the suspended bed consists of a layer of live sand, a layer of permeable fine cloth, and a mesh-like or perforated rigid plastic bed, increasing the area for tiger prawn activity and habitat. Two propeller pumps, symmetrically positioned at the corners of the pond walls or along the center of the pond, generate rotating water flow for waste removal. Before use, a biofilm is attached to the sand to control ammonia and nitrite concentrations. This eliminates the need for circulating water pumps, protein separators, and biochemical treatment units. Compared to refining aquaculture systems (RAS), it saves 4-5 kWh of electricity per kilogram of prawns produced, equivalent to a reduction of 3.488-4.360 kg of carbon dioxide emissions. Its simple and compact structure, ingenious design, and efficient use of aquaculture space effectively increase tiger prawn yield, resulting in high economic benefits, low carbon emissions, and environmental friendliness, with broad application prospects. However, using devices such as circulating water pumps to discharge sewage can affect the activities of farmed shrimp and may even damage them, thus requiring a reduction in farming density and hindering the improvement of farming efficiency. Summary of the Invention

[0005] To address the problem of low farming efficiency in environmentally friendly crayfish farming methods, this application provides a high-density environmentally friendly farming method and equipment for Procambarus clarkii.

[0006] Firstly, the high-density environmentally friendly aquaculture method for Procambarus clarkii provided in this application adopts the following technical solution:

[0007] A high-density, environmentally friendly method for farming red swamp crayfish includes the following steps:

[0008] S1. Provide several breeding ponds of varying sizes to raise shrimp larvae at different developmental stages;

[0009] S2. Add shrimp larvae to the smallest possible rearing pond;

[0010] S3. After the shrimp larvae have grown to a certain size, they are transferred to a larger breeding pond. The original breeding pond is cleaned and a new batch of shrimp larvae is added to it.

[0011] S4. Repeat step S3 until the shrimp larvae develop to the specified size.

[0012] By adopting the technical scheme, since the volume of the procambarus clarkii fry changes greatly during the development process, the procambarus clarkii fry of different development degrees is cultivated by using the breeding ponds of different sizes, on the one hand, the utilization efficiency of the breeding space can be improved, the breeding ponds of different sizes can be used for cultivation at the same time, and the procambarus clarkii fry is transferred in turn, so that the problem of leaving development space for considering the development size during cultivation in the same breeding pond is avoided, on the other hand, the amount of water and feed used for cultivation can be adjusted according to the development degree, so that excessive water use and overfeeding are avoided, and the amount of excrement produced by the procambarus clarkii fry of different development degrees is also different, so that the sewage after cultivation can be treated according to different development degrees, thereby reducing the pollution degree of the environment during cultivation.

[0013] Optionally, in steps S2 and S3, a low-temperature water flow is kept circulating in the breeding pond.

[0014] By adopting the technical scheme, the procambarus clarkii is a eurythermic aquatic animal and can live in water with low temperature, since the cultivation density of the procambarus clarkii fry is high, the metabolism activity of the procambarus clarkii fry can be reduced by reducing the water temperature, the mutual harm between the procambarus clarkii fry is reduced, and the activity consumption is also reduced, so that more energy is converted into body development.

[0015] Optionally, in step S3, before the procambarus clarkii fry is transferred, warm water flow is added to the surface of the breeding pond to form a warm water layer on the surface of the breeding pond, and the warm water layer is kept until the procambarus clarkii fry gathers in the warm water layer.

[0016] By adopting the technical scheme, compared with a low-temperature environment, the procambarus clarkii is more inclined to live in a warm environment, so that before the procambarus clarkii fry is transferred, a warm water layer is formed on the surface, so that the procambarus clarkii fry originally in the low-temperature environment gathers in the warm water layer on the surface, since the water with high temperature has low density, it can float on the surface of the water with low temperature, during the gathering of the procambarus clarkii fry in the warm water layer, pollutants such as excrement will deposit to the bottom of the breeding pond under the action of gravity, so that the procambarus clarkii fry and the pollutants are separated, so that the procambarus clarkii fry can be transferred in a clean environment, and the procambarus clarkii fry gathered on the surface is conducive to the transfer, so that the transfer efficiency is improved, and the pollutants in the lower layer can be treated centrally to avoid polluting the environment.

[0017] Optionally, in step S1, the breeding ponds are stacked according to the size, and the breeding pond with the smallest size is placed at the top end, and in step S3, the procambarus clarkii fry is transferred, specifically including the following steps: water flow is added to the breeding pond, so that the water in the warm water layer flows out of the breeding pond to the breeding pond below, so that the procambarus clarkii fry enters the breeding pond below with the water in the warm water layer.

[0018] By adopting the technical scheme, the size of the upper aquaculture pond gradually increases from top to bottom, so that the overflowed substances in the upper aquaculture pond can fall into the lower aquaculture pond. After the warm water layer is added, the shrimp fry will gather on the surface of the aquaculture pond. At this time, water flow is added to the aquaculture pond until the water flow overflows. The shrimp fry on the surface will overflow the aquaculture pond with the water flow and fall into the lower aquaculture pond. Since the shrimp fry gather on the surface, the shrimp fry will overflow first during the overflow process, thereby separating the shrimp fry from the sewage with a higher content of pollutants in the lower layer. When most of the shrimp fry has overflowed, the water flow can be stopped. The few remaining shrimp fry can be manually transferred, so that the shrimp fry entering the new aquaculture pond can be in a relatively clean environment, and the sewage can be left at the bottom of the upper aquaculture pond.

[0019] Optionally, in step S3, the adding of the water flow specifically includes the following steps: the water flow is added from the middle of the aquaculture pond at intervals near the warm water layer to form waves from the middle to the outside of the warm water layer.

[0020] By adopting the technical scheme, the water flow can uniformly overflow from all around the aquaculture pond, maintaining stable overflow while improving overflow efficiency. Adding the water flow near the warm water layer can avoid disturbing the sewage in the lower layer, thereby ensuring the cleanliness of the overflowing water flow. In addition, the amount of water flow can be better controlled to ensure stable overflow and avoid violent fluctuations or excessive overflow of the warm water layer. Intermittent addition can form wave-shaped overflow, which not only ensures stable overflow but also enables the overflowing water flow to have a certain driving force to drive the shrimp fry to overflow the aquaculture pond, avoiding the obstruction of the aquaculture pond edge to the overflow of the shrimp fry.

[0021] Optionally, in step S3, the cleaning of the original aquaculture pond specifically includes the following steps: a flocculating agent is added to the original aquaculture pond to stratify the water in the original aquaculture pond and discharge the sewage in the lower layer.

[0022] By adopting the technical scheme, when the shrimp fry is completely transferred, the water in the original aquaculture pond is treated. Since the original aquaculture pond also contains a lot of clean water, the pollutants are flocculated in the lower layer after the addition of the flocculating agent. After the sewage in the lower layer is discharged, the relatively clean upper layer water is left, so that the clean water can be recycled, which is conducive to reducing the water consumption of aquaculture.

[0023] Optionally, the aquaculture pond continuously breeds shrimp fry, and in step S4, the repeating of step S3 is performed in the aquaculture pond from bottom to top.

[0024] By adopting the technical scheme, continuous breeding of shrimp fry can fully utilize the aquaculture capacity of the aquaculture pond and improve the breeding efficiency. When step S3 is repeated, the shrimp fry in the lower aquaculture pond needs to be transferred first before receiving the shrimp fry from the upper layer. Therefore, step S3 is repeated from bottom to top.

[0025] In a second aspect, the application provides a breeding device for the high-density environmentally-friendly breeding of Procambarus clarkii, which adopts the following technical scheme:

[0026] A breeding device comprises:

[0027] A plurality of breeding pools of different sizes are stacked according to size, with the smallest breeding pool being placed at the top end;

[0028] A circulating water pipe is connected to the breeding pools and used to circulate water flow in the breeding pools;

[0029] A warm water pipe extends into the breeding pools, with the outlet of the warm water pipe being located at the middle of the breeding pool and the height of the outlet being close to the edge of the breeding pool;

[0030] A sewage pipe is connected to the breeding pools;

[0031] A collection pool is arranged at the lower end of the largest breeding pool.

[0032] By adopting the above technical scheme, the breeding pools are stacked according to size, which can make the shrimplets transfer from the top to the bottom during the cultivation process, improving the transfer efficiency. The circulating water pipe can provide circulating water during the cultivation of the shrimplets, thereby creating an environment suitable for the growth of the shrimplets. The warm water pipe can provide warm water at the middle of the surface of the breeding pool, which is used to gather the shrimplets and transfer the shrimplets. The sewage pipe can discharge the sewage at the bottom of the breeding pool, which is beneficial to keeping the water in the breeding pool clean. The collection pool is arranged at the lower end of the stacked breeding pools. When the shrimplets grow to a specified size in the largest breeding pool, they can be transferred to the collection pool for subsequent packaging and other treatments.

[0033] Optionally, the number of breeding pools is three, and the breeding pools are coaxially stacked.

[0034] By adopting the above technical scheme, since the transfer of the shrimplets also takes a certain amount of time, three breeding pools can meet the cultivation process of Procambarus clarkii, and the shrimplets do not need to be transferred too much during the cultivation process. The coaxial stacking can make the shrimplets and water overflowing from the breeding pool be evenly received by the breeding pool below.

[0035] Optionally, the edge of the breeding pool is a smooth edge.

[0036] By adopting the above technical scheme, the smooth edge can reduce the resistance suffered by the shrimplets when overflowing from the breeding pool, thereby making the transfer process faster and using less water for overflowing.

[0037] In summary, the application has at least one of the following beneficial technical effects:

[0038] 1. By using different sizes of culture ponds to culture shrimp fry at different development stages, on the one hand, the utilization efficiency of culture space can be improved, different sizes of culture ponds can be cultured at the same time, and shrimp fry transfer can be carried out in turn, and the amount of water and feed used for culture can be adjusted according to the development stage to avoid excessive water use and overfeeding. In addition, the amount of excrement produced by shrimp fry at different development stages is also different, and different development stages can be used for separate treatment of the sewage after culture, thereby reducing the degree of environmental pollution during culture.

[0039] 2. The formation of a warm water layer on the surface can cause the shrimp fry originally in low temperature to gather in the warm water layer on the surface. Since the water with high temperature has low density, it can float on the surface of the water with low temperature. During the gathering of the shrimp fry in the warm water layer, pollutants such as excrement will deposit to the bottom of the culture pond under the action of gravity, thereby realizing the separation of the shrimp fry and the pollutants, so that the shrimp fry can be transferred in a clean environment, and the shrimp fry gathered on the surface is beneficial to the transfer and improves the transfer efficiency. The pollutants in the lower layer can be treated centrally to avoid environmental pollution.

[0040] 3. The size of the culture pond gradually increases from top to bottom, so that the overflow of the upper culture pond can fall into the lower culture pond. After the warm water layer is added, the shrimp fry will gather on the surface of the culture pond. At this time, water is added to the culture pond until the water overflows. The shrimp fry on the surface will overflow the culture pond with the water and fall into the lower culture pond. Since the shrimp fry gathers on the surface, the shrimp fry will overflow first during the overflow process, thereby separating the shrimp fry from the sewage with high content of pollutants in the lower layer. When most of the shrimp fry overflow, the water flow can be stopped. A small number of remaining shrimp fry can be transferred manually, so that the shrimp fry entering the new culture pond can be in a relatively clean environment, and the sewage is left at the bottom of the upper culture pond. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a flowchart of an embodiment of the present application;

[0042] Figure 2 is a schematic diagram of the overall structure of another embodiment of the present application;

[0043] Figure 3 is a first angle sectional view of another embodiment of the present application;

[0044] Figure 4 is a second angle sectional view of another embodiment of the present application.

[0045] Fig. 1 is a culture pond; 2, a circulating water pipe; 3, a warm water pipe, 31, a warm water outlet; 4, a sewage pipe; 41, a sewage inlet; 5, a collection pond; 51, a collection port. DETAILED DESCRIPTION

[0046] The application will be further described below in conjunction with the accompanying drawings Figure 1 to the accompanying drawings Figure 4 The application will be further described below in conjunction with the accompanying drawings

[0047] One embodiment of the application is described with reference to the accompanying drawings Figure 1 A high-density environmentally friendly culture method of Procambarus clarkii, comprising the following steps:

[0048] S1, providing a plurality of culture ponds with different sizes.

[0049] Specifically, the culture ponds with different sizes can use the same structure, so that the size difference can be better distinguished, and the shrimplets that have already adapted to the original environment can better adapt to the new culture pond environment.

[0050] More specifically, the plurality of culture ponds with different sizes but the same shape are placed in a coaxial overlapping manner, and the smallest one is at the top and the largest one is at the bottom, so that when the water in the upper culture pond overflows, it can flow into the lower culture pond.

[0051] S2, adding shrimplets in the culture pond with the smallest size.

[0052] Specifically, after adding shrimplets, appropriate shrimps feed should be provided, including specially designed shrimps feed or other feed rich in protein and nutrient elements, regular feeding, and controlling the amount of feeding to avoid water pollution caused by overfeeding; during the cultivation process, low-temperature water flow circulation is used, Procambarus clarkii is a eurythermic aquatic animal that can live in water with lower temperature, because the culture density of shrimplets is high, by reducing the water temperature, the shrimplets' metabolism activity can be reduced, the mutual harm between shrimplets can be reduced, and their activity consumption can be reduced, so that more energy can be converted into body development; in addition, filter equipment, ultraviolet sterilizer, water pump, biological filter and refrigeration machine and other components are used, and the water quality is regularly monitored, including pH value, ammonia nitrogen, nitrite and nitrate and other indicators. Maintain appropriate water quality conditions to keep the water clean and the temperature appropriate.

[0053] S3, after the shrimplets grow to a certain size, the shrimplets are transferred to a culture pond with a larger size.

[0054] Specifically, before the transfer of the shrimp fry, warm water flow is added to the culture pond to form a warm water layer on the surface of the culture pond. Due to the low-temperature circulating water used in the process of breeding the shrimp fry, the temperature of the growth environment of the shrimp fry is low. By forming the warm water layer, the shrimp fry originally in the low-temperature water is gathered to the warm water layer on the surface layer. Since the water with high temperature has low density, it can float on the surface of the water with low temperature. In the process of gathering the shrimp fry to the warm water layer, the pollutants such as excrement will be deposited to the bottom of the culture pond under the action of gravity, so as to realize the separation of the shrimp fry and the pollutants. After the formation of the warm water layer, the warm water layer is maintained for a period of time to make the shrimp fry gather and the pollutants completely sink. After the gathering is completed, the water flow is continuously added to the culture pond to make the water flow overflow. Since the shrimp fry is gathered in the warm water layer on the surface layer, in the process of the water flow overflowing, the shrimp fry is carried out of the culture pond with the water flow and enters the culture pond below. Before the water flow overflows, a part of water is added to the culture pond below to make the shrimp fry fall into the culture pond below and play a certain buffering role, so as to avoid the damage of the shrimp fry in the transfer process. By this way, the shrimp fry is transported, which can simplify the transfer operation, directly use the water flow to transport, avoid the fishing process, improve the transfer efficiency, and make the shrimp fry gather in the upper layer before the transfer to separate the shrimp fry and the pollutants, so that the shrimp fry is in a relatively clean environment when it is transferred. When it is transferred to the next culture pond, the culture environment can be maintained better, and the pollutants are left at the bottom of the culture pond.

[0055] More specifically, the water flow for overflowing the shrimp fry is added from the middle of the culture pond near the warm water layer. The water flow is added from the middle to make the water flow overflow uniformly from all around of the culture pond, maintain the stability of the overflow, improve the overflow efficiency, and avoid disturbing the lower layer of sewage when added near the warm water layer, so as to ensure the cleanliness of the overflow water flow and better control the overflow amount of the water flow, ensure the stability of the overflow, avoid the violent fluctuation of the warm water layer or excessive overflow, and form a wave-shaped overflow by the interval addition, so as to make the overflow water flow have a certain driving force to drive the shrimp fry to overflow the culture pond and avoid the hindrance of the edge of the culture pond to the shrimp fry overflowing the culture pond.

[0056] Specifically, after the transfer of the shrimp fry is completed, a flocculating agent is added to the remaining water in the culture pond. The flocculating agent can deposit the pollutants at the bottom of the culture pond, so that the upper water of the culture pond is maintained in a relatively clean state. After the contaminated water containing the pollutants is separated from the bottom of the culture pond, the remaining relatively clean water can be used as the culture water for the next batch of shrimp fry, so that less water is used to collect the pollutants in the breeding process, the environment is kept clean, and excessive water use is avoided.

[0057] S4, repeating step S3 until the shrimp fry develops to a specified size.

[0058] Specifically, several culture ponds can simultaneously cultivate shrimp seedlings. When it is necessary to transfer the shrimp seedlings, the shrimp seedlings in the lowermost culture pond are transferred first, and then the shrimp seedlings in the upper culture ponds are transferred in sequence, so as to avoid mixing of shrimp seedlings of different development degrees and improve the efficiency of cultivation.

[0059] Another embodiment of the present application, with reference to the drawings, a culture device, comprising culture ponds 1, circulating water pipes 2, warm water pipes 3, sewage pipes 4 and a collection pond 5, the number of culture ponds 1 is three and the shape is equal, arranged in a trapezoidal shape from top to bottom, the collection pond 5 is arranged below the lowermost culture pond 1, and the size of the collection pond 5 is greater than that of the lowermost culture pond 1, the collection pond 5 comprises a collection port 51 for collecting the cultivated shrimp seedlings in the collection pond 5, each culture pond 1 is provided with two circulating water pipes 2 for providing circulating water for cultivating shrimp seedlings in the culture pond 1, the warm water pipes 3 and the sewage pipes 4 are connected in the middle of the culture ponds 1 and the lowermost collection pond 5, wherein the number of warm water pipes 3 is two, which are arranged on both sides of the sewage pipes 4, and are connected to an external warm water source at the lower end, and each culture pond 1 is provided with three warm water outlets 31 of the warm water pipes 3, so that each culture pond 1 has six warm water outlets 31, the height of the warm water outlet 31 is lower than the edge height of the culture pond 1, so that the warm water outlet 31 can form a warm water layer on the surface of the culture pond 1, and the six warm water outlets 31 can uniformly add warm water to the culture pond 1, and when the shrimp seedlings need to be transferred and the warm water needs to be overflowed, the warm water can be uniformly overflowed from the upper culture pond 1; the edge of the culture pond 1 is a smooth edge, which can reduce the resistance of the shrimp seedlings during the process of overflowing the culture pond 1, so that the shrimp seedlings can overflow the culture pond 1 more quickly and efficiently, and the amount of water required during the transfer process is reduced; the bottom of the culture pond 1 is provided with a recessed groove bottom for collecting the sewage formed after the pollutants are settled, and the sewage pipe 4 is provided with a sewage inlet 41, which connects the sewage pipe 4 and the culture pond 1 at the position of the groove bottom, so that the sewage at the groove bottom enters the sewage pipe 4 through the sewage inlet 41, thereby collecting or treating the sewage at the lower part of the collection pond 5.

[0060] The implementation principle of the embodiment of the present application is as follows: during the breeding of shrimplets, the shrimplets with small size are first added into the uppermost breeding tank 1, feed is added, and circulating water suitable for breeding shrimplets is introduced through the circulating water pipe 2; when the shrimplets in the uppermost breeding tank 1 grow to a certain size, warm water is added to the surface layer of the breeding tank 1 through the warm water outlet 31; when the warm water is sufficient, the addition of the warm water is stopped, and a period of time is kept; when the shrimplets gather to the surface layer, the addition of the warm water is continued slowly and intermittently; the warm water outlets 31 in different directions can generate uniform waves, so that the shrimplets gathered in the upper warm water layer can overflow the upper breeding tank 1 and fall into the lower breeding tank 1 under the condition of more warm water injection; after the shrimplets are transferred, the sewage inlet 41 can be opened to discharge the sewage deposited at the bottom into the sewage pipe 4; after the sewage is discharged, a certain amount of relatively clean water is left in the breeding tank 1, which can be used for the breeding of the next batch of shrimplets; the shrimplets are further developed in the next breeding tank 1 with larger size; after growing to a certain size, the above steps are repeated to transfer the shrimplets to the next breeding tank 1; after further cultivation, the shrimplets are transferred to the collecting tank 5 in the same way, so that the collected Procambarus clarkia can be collected in the collecting tank 5 through the collecting port 51.

[0061] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A high-density environmentally friendly culture method of Procambarus clarkii, characterized by, The method comprises the following steps: S1, providing a plurality of culture pools with different sizes for culturing shrimp fry at different development stages; S2, adding shrimp fry into the smallest culture pool; S3, when the shrimp fry grow to a certain size, transferring the shrimp fry to a larger culture pool, cleaning the original culture pool, and then adding a new batch of shrimp fry into the original culture pool; S4, repeating step S3 until the shrimp fry grow to a specified size; In step S3, before transferring the shrimp fry, a warm water flow is added to the surface of the culture pool to form a warm water layer on the surface of the culture pool, and the warm water layer is maintained until the shrimp fry gather in the warm water layer; the transferring of the shrimp fry specifically comprises the following steps: adding a water flow into the culture pool to make the water in the warm water layer overflow from the culture pool to the lower culture pool, so that the shrimp fry enter the lower culture pool with the water in the warm water layer; when the warm water needs to be overflowed during the transferring of the shrimp fry, the warm water can be uniformly overflowed from the upper culture pool; the edge of the culture pool is a smooth edge; In step S3, the adding of the water flow specifically comprises the following steps: the water flow is added at intervals from the middle of the culture pool near the warm water layer to form waves from the middle to the outside of the warm water layer.

2. The method of claim 1, wherein the method is characterized by, In steps S2 and S3, a low-temperature water flow is kept circulating in the culture pool.

3. The method of claim 1, wherein the method is characterized by, In step S1, the culture pools are stacked according to size, with the smallest culture pool at the top end.

4. The method of claim 1, wherein the method is characterized by, In step S3, the cleaning of the original culture pool specifically comprises the following steps: adding a flocculating agent into the original culture pool to stratify the water in the original culture pool, and then discharging the sewage in the lower layer.

5. The method of claim 1, wherein the method is characterized by, The culture pools are used for continuous culture of shrimp fry, and in step S4, the repeating of step S3 is performed from bottom to top in the culture pools.

6. The method of claim 1, wherein the method is characterized by, The number of the culture pools is three, and the culture pools are coaxially stacked.

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