Ecological grouper breeding system and method based on wave making system

Abstract

The invention belongs to the field of fry breeding, and particularly relates to an ecological grouper fry breeding system and method based on a wave making system. According to the scheme, the grouper ecological breeding system based on the wave making system comprises an equipment unit and a regulation and control unit, the equipment unit comprises an ecological pond, an impeller type aerator, a surge type aerator and a wave making ball, and the impeller type aerator, the surge type aerator and the wave making ball are arranged at different positions in the ecological pond respectively; and the regulation and control unit is electrically connected with the impeller type aerator, the surge type aerator and the wave making ball, is used for respectively controlling the starting and stopping of each device in the device unit at different stages of seedling raising, and is also used for regulating and controlling the working power of each device in the device unit. According to the scheme, the problems of water body aging and low survival rate in an artificially cultured grouper breeding ecological system are solved.

Description

Technical Field

[0001] The present invention belongs to the field of seedling cultivation, and specifically relates to an ecological seedling cultivation system and method for grouper based on a wave-making system. Background Art

[0002] As the most valuable economic fish in marine aquaculture, grouper has the advantages of few diseases and fast growth. It is the most ideal choice for marine aquaculture to develop high-value marine biological technology. Especially at the time of optimization and adjustment of the current aquaculture industry, many farmers hope to change to high-quality fish such as grouper. At present, the existing technologies in the grouper seedling industry mainly include indoor cement pool seedling and pond seedling, but each has its own advantages and disadvantages. For example, indoor seedling lacks palatable bait, and the abundance and nutrition of bait depend on the outside world. It is time-consuming and labor-intensive, and the average survival rate is low (about 1%). The overall seedling efficiency is not high. There are mainly problems such as low seedling survival rate, unstable seedling batches, and more diseases during the seedling process, which leads to a significant decrease in the overall emergence rate. If calculated by the average emergence rate, it is less than 3%. The ecological seedling cultivation in ponds has abundant naturally cultivated palatable bait of various sizes, and the water volume is large. The water quality is stable under suitable climatic conditions, and a circulation channel for the energy flow of light - algae - biological bait - fish fry - excrement - bacterial decomposition - nutrients can be formed by adding organic and inorganic nutrients. However, there are also problems such as huge water bodies, poor water quality control and management, easy aging of water quality during the seedling cultivation period (28 to 35 days), and premature death and rot of algae.

[0003] In order to solve the above problems, a document with Chinese patent publication number CN114762491A provides a factory-based seedling breeding method for grouper. By using compound fertilizer prepared by fermentation of corn syrup hydrolyzate, cassava starch hydrolyzate and spirulina hydrolyzate instead of conventional compound fertilizer as base fertilizer, the adverse effects of components in conventional compound fertilizer on water quality can be reduced, which can improve the vitality of young fish and reduce the early mortality rate of young fish; by using artificial baits with different active ingredients in different stages to replace the commonly used artificial bait shrimp chips, the immunity of young fish at different stages can be improved, and suitable nutrition can be fully provided to reduce the illness and death of young fish, and by gradually adjusting and adapting the content of attractants and immune active ingredients, young fish can be gradually fed with artificial bait, the palatability of late-stage young fish to artificial bait can be improved, the cannibalism phenomenon caused by the demand for feed intake of late-stage young fish can be effectively reduced, and the survival rate of young fish can be improved.

[0004] Although the above methods have respectively improved the emergence rate and survival rate of grouper seedlings, the seedling raising method used is mainly based on artificial water quality control, supplemented by improving the immunity of grouper. Although this method provides a comfortable living environment for fish as much as possible, the water body in the ecosystem is prone to aging, resulting in a low survival rate of fry (seedlings). When using compound fertilizers prepared by fermentation of corn slurry hydrolysate, cassava starch hydrolysate, and spirulina hydrolysate instead of conventional compound fertilizers as base fertilizers, although this special compound fertilizer is relatively slow in nutrient release compared to conventional compound fertilizers, its nutrient release rate is difficult to accurately control. The release of nutrients in the compound fertilizers prepared by fermentation of these hydrolysates is affected by many factors, such as microbial activity, soil temperature, humidity, etc. For example, in a high temperature environment, microbial decomposition activity intensifies, and nutrients may be released faster. If in this case, too many nutrients (such as nitrogen and phosphorus) enter the water body, it may still lead to eutrophication of the water body, thereby accelerating the aging of the water body. Summary of the invention

[0005] The purpose of this scheme is to provide a grouper ecological nursery system and method based on a wave-making system to solve the problems of water aging and low survival rate in the artificially cultivated grouper nursery ecosystem.

[0006] In order to achieve the above purpose, this scheme provides a grouper ecological seedling breeding system based on a wave-making system, comprising:

[0007] Equipment unit: including an ecological pond, an impeller aerator, a surge aerator and a wave-making ball, wherein the impeller aerator, the surge aerator and the wave-making ball are arranged at different positions in the ecological pond;

[0008] Control unit: electrically connected to the impeller aerator, surge aerator and wave-making ball, used to control the opening and closing of each device in the equipment unit at different stages of seedling cultivation, and also used to control the working power of each device in the equipment unit.

[0009] A method for ecological breeding of grouper based on a wave-making system comprises the following steps:

[0010] S10: Disinfect the pool water, and after three days, turn on the impeller aerator and the surge aerator during the day, and add algae, microorganisms and plankton baits to cultivate the baits for three days;

[0011] S20: fish eggs are placed in the hatching water tank for fertilized egg hatching, and the impeller aerator is turned on all day. After four days, the fry are released from the hatching water tank to the ecological pond. From then on, the impeller aerator is turned off during the day and the surge aerator is turned on at night. The impeller aerator and the surge aerator are turned on at the same time, and rotifers are added every day until the fry are 18 days old;

[0012] S30: Starting from the 19th day of age, the impeller aerator, surge aerator and wave-making ball are turned on all day long, and copepods are added every day as the supply of palatable biological bait until the fry are harvested on the 28th day.

[0013] The principle and technical effect of this scheme are that the impeller aerator, surge aerator and wave-making ball in this scheme are turned on separately or simultaneously at different stages of seedling cultivation, and their power is controlled by the speed regulator at different stages. After the wave-making system is started, it can completely replace the air stone or bottom pipe oxygenation and aeration system of the original seedling cultivation mode. In this scheme, when cultivating bait, turning on the impeller aerator and the surge aerator can speed up the stirring of the water body and enhance the cultivation effect of algae, microorganisms and plankton; after the fry are released into the ecological pond, the surge aerator is turned on during the day to help the fry eat, and the stirring of the water body is accelerated at night to reduce the fry sinking to the bottom; from the 19th day of age, the fry's food intake increases, and the excrement produced after eating increases. These excrement contain a large amount of organic matter, which will gradually decompose in the pond, consume oxygen, and produce harmful substances such as carbon dioxide and hydrogen sulfide, causing the pond water quality to deteriorate and accelerating the aging of the pond. At this time, the impeller aerator, the surge aerator and the wave-making ball work together to increase the dissolved oxygen in the upper and lower layers of the water body, prevent the aging of the water quality and the bottom of the ecological pond, and accelerate the decomposition rate of aerobic beneficial bacteria.

[0014] According to the needs of the grouper breeding process, this scheme reasonably configures a wave-making system in the original breeding ecological pond (the original pond ecological breeding pond is generally equipped with air stones or bottom pipes for oxygenation and aeration, lacking water power). By enhancing the system's water power and making waves, a good water environment similar to the ocean is created (flowing water does not rot, door hinges do not worm), and the transformation, flow and circulation of energy and matter are accelerated, forming an excellent grouper breeding environment under artificial conditions. The good water environment similar to the ocean created by this scheme provides an excellent training environment for groupers. Grouper fry need to constantly adjust their position and posture in this dynamic water flow, which exercises their swimming ability and sense of balance. When bad weather strikes, the trained groupers have a greater probability of surviving in the rapids than those raised in a comfortable environment. At the same time, the movement of the water flow can stimulate the body of the fry, promote blood circulation and metabolism, which helps the fry better absorb nutrients, accelerate growth and development, and improve resistance to diseases. Furthermore, the ecological breeding method for grouper based on the wave-making system in this scheme can fully mix the water from different water layers, bring the oxygen-rich water in the surface layer to the bottom layer, and improve the dissolved oxygen level of the overall water body. With the increase of dissolved oxygen, the oxidation capacity of the water body is enhanced, and the ORP value increases accordingly. A higher ORP usually means that the water body has better oxidation stability. It can be seen that this scheme improves the water quality in the ecological pond.

[0015] In summary, this solution solves the problems of water aging and low survival rate in the artificially cultivated grouper nursery ecosystem.

[0016] Furthermore, the impeller-type aerator of the equipment unit is arranged at the diagonal of the ecological pond, the surge-type aerator is arranged in the center of the ecological pond, and the wave-making ball floats on the surface of the ecological pond.

[0017] Impeller aerators are set up at the diagonal of the ecological pond. When turned on, the water forms a circulation. A surge aerator is set up in the center of the ecological pond. When turned on, the water radiates around it to form surges. When the wave-making ball is turned on, the polyethylene ball floats up and down to generate waves. Through the interaction between the impeller aerator, surge aerator and wave-making ball, a water environment similar to that of the ocean can be simulated, and the water in different water layers can be fully mixed, bringing the oxygen-rich water on the surface to the bottom, accelerating the conversion, flow and circulation of energy and matter.

[0018] Furthermore, a speed regulator is provided between the control unit and each device in the device unit, and the control unit controls the working power of each device in the device unit respectively through the speed regulator.

[0019] The speed regulator can accurately adjust the working power of each device in the equipment unit according to specific needs, and can formulate a personalized operation mode according to the actual seedling situation. At the same time, the speed regulator can easily adjust the power of new equipment so that the new equipment can work in coordination with the original equipment.

[0020] Furthermore, the ecological pond is fixedly connected to a water inlet pipe, which is provided with a water valve. A pressure detection device is embedded in the side wall of the ecological pond. The pressure detection device and the water valve are electrically connected to the control unit. The pressure detection device is used to detect the pressure of the water waves and send it to the control unit. When the pressure detection device cannot detect the pressure of the water waves, it sends an electrical signal indicating that the water level is too low to the control unit. When the control unit receives the electrical signal indicating that the water level is too low, it opens the water valve until the water wave pressure sent by the pressure detection device is received again, and then the water valve is closed.

[0021] When the water depth in the ecological pond is insufficient, the water quality will easily become turbid under the action of the impeller aerator and the surge aerator, and insufficient water depth will not be easy for fry breeding. When the equipment in the equipment unit is working, the water waves generated will continuously hit the side wall of the ecological pond. At this time, the force of the water waves on the side wall of the pond can be detected by the pressure detection device to determine the approximate range of the water level. When the water level is insufficient, the water waves cannot reach the pressure detection device, and the pressure detection device cannot detect the pressure. At this time, the pool water is automatically replenished, which is more conducive to the growth of fry.

[0022] Furthermore, the control unit statistically analyzes the water wave pressure sent by the pressure detection device and analyzes the change cycle of the water wave pressure to infer the size of the water waves. The turbidity of the water quality is inferred based on the working equipment and working power of the equipment unit. The turbidity of the water quality, the growth cycle of the fry and the feeding time are combined to adjust the working power of each device in the equipment unit.

[0023] The positions of each device in the equipment unit in the ecological pond are fixed. In the absence of environmental interference, the water depth will not change in a short time. At this time, the pressure change cycle detected by the pressure detection device corresponds to the cycle of water waves hitting the ecological pond. The cycle of water waves hitting the ecological pond is related to the working power of each device, the turbidity of the pool water, the number of fry and the growth cycle of fry (roughly the volume). Fry will not change in a short time. Therefore, the change cycle of water wave pressure detected by the pressure detection device, combined with the equipment and working power of the equipment unit, can be used to infer the change of water quality. After a period of time after the bait is put in (feeding) (at this time, the bait will make the water turbid), adjusting the working power of each device in the equipment unit is beneficial to help the fry eat; when the fry eat less (fish feces will make the water turbid), adjusting the working power of each device in the equipment unit is beneficial to increase the ORP value of the pool water and accelerate the degradation of fish feces. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of the ecological pond in an embodiment of the present invention.

[0025] Figure 2 The present invention is a flowchart of an ecological breeding method for grouper based on a wave-making system in an embodiment of the present invention.

[0026] The following is a further detailed description through specific implementation methods:

[0027] The reference numerals in the drawings of the specification include: 1. surge type aerator; 2. wave-making ball; 3. impeller type aerator. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the concept and technical effects of the present invention in combination with the embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention:

[0029] Provide a grouper ecological seedling breeding system based on a wave-making system (such as Figure 1 shown), including:

[0030] Equipment unit: including an ecological pond, an impeller-type aerator 3, a surge-type aerator 1 and a wave-making ball 2, wherein the impeller-type aerator 3, the surge-type aerator 1 and the wave-making ball 2 are arranged at different positions in the ecological pond;

[0031] Control unit: electrically connected to the impeller aerator 3, the surge aerator 1 and the wave-making ball 2, used to control the opening and closing of each device in the equipment unit at different stages of seedling cultivation, and also used to control the working power of each device in the equipment unit.

[0032] In the embodiment of this scheme, the impeller aerator 3 of the equipment unit is arranged at the diagonal of the ecological pond, the surge aerator 1 is arranged in the center of the ecological pond, and the wave-making ball 2 floats on the surface of the ecological pond. When the surge aerator 1 is turned on, the water body radiates around it with the surge aerator as the center to form surges, and when the wave-making ball 2 is turned on, waves are generated by the up and down floating of the polyethylene ball.

[0033] Specifically, an impeller aerator 3 is provided at each diagonal of the ecological pond. After the two impeller aerators 3 are turned on, a circulation is formed in the water body in the ecological pond.

[0034] In an embodiment of the present scheme, the impeller aerator 3, the surge aerator 1 and the wave-making ball 2 are connected in parallel and connected to a power supply. A speed regulator is provided between the impeller aerator 3, the surge aerator 1 and the wave-making ball 2 and the control unit. The control unit controls the working power of each device in the equipment unit through the speed regulator.

[0035] like Figure 2 As shown, a method for ecological breeding of grouper based on a wave-making system comprises the following steps:

[0036] S10: Disinfect the pool water, and after three days, turn on the impeller aerator 3 and the surge aerator 1 during the day, and add algae, microorganisms and plankton baits to cultivate the baits for three days;

[0037] In the embodiment of this scheme, the algae, microorganisms and plankton baits are purchased from the market.

[0038] S20: putting fish eggs into the hatching water tank for fertilized egg hatching, turning on the impeller aerator 3 all day, releasing the fry from the hatching water tank to the ecological pond after four days, and turning off the impeller aerator 3 and turning on the surge aerator 1 during the day, and turning on the impeller aerator 3 and the surge aerator 1 at the same time at night, and adding rotifers every day until the fry are 18 days old;

[0039] Among them, the fry are counted from the time they hatch from the egg membrane.

[0040] S30: From the 19th day of age of the fry, the impeller aerator 3, the surge aerator 1 and the wave ball 2 are turned on all day long, and copepods are added every day as the supply of palatable biological bait until the fry are harvested on the 28th day.

[0041] In the embodiment of the present scheme, a pressure detection device is embedded in the side wall of the ecological pond, a water inlet pipe is fixedly connected to the ecological pond, a water valve is arranged on the water inlet pipe, and the pressure detection device and the water valve are electrically connected to the control unit. In step S20 and step S30, the control unit controls the opening and closing of the water valve through the electrical signal sent by the pressure detection device, which specifically includes the following steps:

[0042] S21: Generate the water valve status value and initialize it to 0;

[0043] S22: The pressure detection device detects the wave pressure, if:

[0044] S22a: The detected wave pressure changes, and the wave pressure is sent to the control unit in the form of an electrical signal;

[0045] S22b: When the water wave pressure cannot be detected, an electrical signal indicating that the water level is too low is generated and sent to the control unit;

[0046] S23: The control unit receives the electrical signal transmitted by the pressure detection unit and converts it into a pressure detection result. If:

[0047] S23a: If the pressure detection result is water wave pressure, the water wave pressure is stored;

[0048] S23b: If the pressure detection result shows that the water level is too low, the water valve is opened, the water valve state value is changed to 1, and the process returns to step S12;

[0049] S24: Determine whether the water valve status value is 0 open, if:

[0050] S24a: If the water valve status value is 0, then return to step S22;

[0051] S24b: If the water valve status value is 1, close the water valve, change the water valve status value to 0, and return to step S22.

[0052] In an embodiment of the present scheme, the control unit is also used to statistically analyze the water wave pressure sent by the pressure detection device, analyze the change cycle of the water wave pressure, and infer the size of the water waves, and then combine the equipment and working power of the equipment unit to infer the turbidity of the water quality, and combine the turbidity of the water quality, the growth cycle of the fry and the feeding time to adjust the working power of each device in the equipment unit.

[0053] Specifically, when the change cycle of the water wave is short (the water wave is small), and the working power corresponding to the equipment of the equipment unit is large, it is inferred that the water quality is turbid. If it is not long after feeding (generally within 2 hours), the working power of the impeller aerator 3 is reduced (or turned off), and the working power of the surge aerator 1 is increased. After a period of time, the working power is restored to the state before the change. If it is after a period of feeding (generally 3 hours), the power of the equipment unit is increased, and the working power is restored to the state before the change after a period of time.

[0054] In the embodiment of the present scheme, 1000g of fertilized eggs are transported from Lingshui Li'an Port, and 8-10L of water is filled in each bag of 20L polyethylene plastic bags for fertilized eggs, 100,000-150,000 eggs are placed, and the bag mouth is tied after oxygenation and sealing, and the temperature is reduced for transportation, and the transportation time does not exceed 4h. The grouper ecological seedling raising method based on the wave-making system and the grouper ecological seedling raising system based on the wave-making system are used for hatching and feeding, and the ORP value in the ecological pond is monitored throughout the whole process, until the 28th day of emergence and fishing, and the ORP value in the ecological pond is always maintained between +276-+375mV. Under anaerobic conditions, due to the lack of dissolved oxygen, the redox potential can be significantly reduced. In anaerobic areas, the redox potential may be lower than +200mV, or even lower than +100mV. Anaerobic conditions are not conducive to the development of grouper fry, because the lack of dissolved oxygen will lead to deterioration of water quality and promote the growth of harmful bacteria and pathogens; under aerobic conditions, the redox potential in the breeding pond is usually between +200mV and +400mV. The ORP value within this range reflects the sufficiency of dissolved oxygen in the water body, which helps to maintain biological activity in the pond and promote the growth of cultured organisms. It can be seen that the grouper ecological nursery system and method based on the wave-making system proposed in this scheme provides a good water quality environment for the fry during the hatching and feeding process of the grouper ecological nursery system, enhances the fry's body structure, promotes the fry's growth, and the fry's survival rate.

[0055] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A grouper ecological seedling raising system based on a wave-making system, characterized in that: include: Equipment unit: including an ecological pond, an impeller aerator, a surge aerator and a wave-making ball, wherein the impeller aerator, the surge aerator and the wave-making ball are arranged at different positions in the ecological pond; Control unit: electrically connected to the impeller aerator, surge aerator and wave-making ball, used to control the opening and closing of each device in the equipment unit at different stages of seedling cultivation, and also used to control the working power of each device in the equipment unit.

2. The grouper ecological seedling raising system based on the wave-making system according to claim 1 is characterized by: The impeller-type aerator of the equipment unit is arranged at the diagonal of the ecological pond, the surge-type aerator is arranged at the center of the ecological pond, and the wave-making ball floats on the surface of the ecological pond.

3. The grouper ecological seedling raising system based on the wave-making system according to claim 2 is characterized by: A speed regulator is provided between the control unit and each device in the device unit, and the control unit controls the working power of each device in the device unit respectively through the speed regulator.

4. A method for ecological breeding of grouper based on a wave-making system, characterized in that: The grouper ecological seedling raising system based on the wave-making system described in claim 1 is used, comprising the following steps: S10: Disinfect the pool water, and after three days, turn on the impeller aerator and the surge aerator during the day, and add algae, microorganisms and plankton baits to cultivate the baits for three days; S20: fish eggs are placed in the hatching water tank for fertilized egg hatching, and the impeller aerator is turned on all day. After four days, the fry are released from the hatching water tank to the ecological pond. From then on, the impeller aerator is turned off during the day and the surge aerator is turned on at night. The impeller aerator and the surge aerator are turned on at the same time, and rotifers are added every day until the fry are 18 days old; S30: Starting from the 19th day of age, the impeller aerator, surge aerator and wave-making ball are turned on all day long, and copepods are added every day as the supply of palatable biological bait until the fry are harvested on the 28th day.

5. The method for raising grouper ecological seedlings based on a wave-making system according to claim 4, characterized in that: The ecological pond is fixedly connected to a water inlet pipe, on which a water valve is provided. A pressure detection device is embedded in the side wall of the ecological pond. The pressure detection device and the water valve are electrically connected to the control unit. The pressure detection device is used to detect the pressure of water waves and send it to the control unit. When the pressure detection device cannot detect the pressure of water waves, it sends an electrical signal indicating that the water level is too low to the control unit. When the control unit receives the electrical signal indicating that the water level is too low, it opens the water valve until the water wave pressure sent by the pressure detection device is received again, and then the water valve is closed.

6. The method for raising grouper ecological seedlings based on a wave-making system according to claim 5, characterized in that: The control unit statistically analyzes the wave pressure sent by the pressure detection device and analyzes the change cycle of the wave pressure to infer the size of the waves. The turbidity of the water quality is inferred based on the equipment and power of the equipment unit. The turbidity of the water quality, the growth cycle of the fry and the feeding time are combined to adjust the working power of each device in the equipment unit.

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