Micropterus salmoides culture method and system based on captive breeding barrel standard fry and pond net cage

Abstract

The invention particularly relates to a micropterus salmonides culture method and system based on captive breeding bucket standard fry and a pond net cage, and belongs to the technical field of aquaculture, the micropterus salmonides culture method based on captive breeding bucket standard fry and the pond net cage comprises the steps that S101, captive breeding buckets are arranged at pond ridges of a pond; s102, arranging a water feeding and discharging system at the bottom of the captive breeding barrel, and enabling the water feeding and discharging system to be communicated with the pond; s103, adding water into the captive breeding barrel to a preset water depth, and arranging a plurality of micropore oxygenation discs and a first biological floating bed in the captive breeding barrel; s104, micropterus salmoides fries with the body length of 2-3 cm are put into the captive breeding barrel, and the putting density is controlled to be 55-65 per cubic meter of water; s201, selecting a pond of 5-10 mu, and arranging a plurality of net cages in the middle of the pond; s202, arranging a plurality of aerators and a second biological floating bed in the pond; s203, throwing bighead carps, silver carps and snails into the pond according to a preset throwing standard; and transferring and breeding. The method can relieve the water quality regulation and control pressure when the seedlings are marked in the captive breeding barrel, improves the survival rate of the seedlings, and facilitates daily management during pond net cage culture.

Description

Technical Field

[0001] The present application belongs to the technical field of aquaculture, and specifically relates to a method and system for breeding California bass based on captive barrel seedlings and pond cages. Background Art

[0002] In recent years, the artificial breeding industry of California bass has developed rapidly, and the special aquaculture of pen barrels has developed rapidly. However, due to the high breeding density, large amount of water change, and difficulty in meeting the standards for tailwater treatment, the utilization rate and breeding efficiency of pen barrels are low, which restricts its development. When pond breeding is chosen, the pond area is large and the environment is complex, which makes the daily management of California bass breeding inconvenient. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In the first aspect, the present application provides a method for breeding California bass based on captive barrel seedlings and pond cages, comprising: The process of labeling seedlings in a barrel: S101. Set up a pen barrel at the bank of the pond; S102. A drainage system is provided at the bottom of the enclosure barrel so that the drainage system is connected to the pond; S103. Add water to the enclosure barrel to a preset water depth, and set a plurality of microporous aeration disks and a first biological floating bed in the enclosure barrel; S104. Release California bass fry of 2-3 cm in length into the enclosure barrel, and control the stocking density to 55-65 per m 3 water bodies; Pond Cage Preparation Process: S201. Select a pond of 5 to 10 mu and set up several cages in the middle of the pond; S202. A plurality of aerators and a second biological floating bed are provided in the pond; S203. According to the preset release standard, bighead carp, silver carp and snails are released into the pond; Transshipment breeding process: S301. When the size of California bass fry in the cage reaches 75-100g, transfer the California bass fry with water to the cage for breeding, and control the breeding density at 35-40 / m 3 Water body.

[0005] In some technical solutions, in S103, the total area of ​​the first biological floating bed on the surface of the water body in the confinement barrel is less than 10% of the surface area of ​​the water body in the confinement barrel.

[0006] In some technical solutions, in S202, the total area of ​​the second biological floating bed on the surface of the water in the pond is 10-15% of the surface area of ​​the water in the pond.

[0007] In some technical solutions, in S203, the preset release standard is to release 50 to 70 bighead carps weighing 100 to 150 grams per acre, 120 to 140 silver carps weighing 100 grams per acre, and 3 to 5 kilograms of snails per acre.

[0008] In some technical solutions, water quality control is performed within a preset period so that the transparency of the pond water is controlled at 25~35cm and the pH value is controlled at 7~8.5.

[0009] In some technical solutions, during the pond cage preparation process and the transshipment breeding process, the standard water level of the pond is higher than 3m.

[0010] In the second aspect, the present application provides a California bass farming system based on a captive barrel seedling marking and a pond cage, comprising a captive barrel and a plurality of cages, wherein the captive barrel is arranged at the bank of the pond, and the captive barrel is used for the captive barrel seedling marking process; the plurality of cages are arranged in the middle of the pond, and the cages are used for the transshipment farming process.

[0011] In some technical solutions, a floating bridge structure is arranged around each cage, and the floating bridge structure is used to connect the cages and connect the cages with the shore of the pond.

[0012] In some technical solutions, the distance between the bottom of each cage and the bottom of the pond is greater than 0.6 m, and a microporous oxygenating disk is provided at the bottom of each cage.

[0013] In some technical solutions, each cage is 6 to 8 meters long, 6 to 8 meters wide, and 2.5 meters high, and the total area of ​​multiple cages on the surface of the pond water is less than 10% of the surface area of ​​the pond water.

[0014] Compared with the prior art, the above technical solution provided by this application includes at least the following technical effects: The present application utilizes a captive barrel to mark California bass seedlings at a specific stocking density, and is connected to the pond through an inlet and outlet system. The aquaculture tail water can be led to the pond for purification and recycling, which can increase the utilization rate of the captive barrel, relieve the pressure of water quality regulation and disease prevention in the captive barrel, and increase the survival rate of seedlings; when the California bass grows and develops to a certain stage, it is transported with water to the pond cage for breeding. By using cages to breed California bass in ponds, it can be convenient for management, disease prevention, fishing and water quality regulation, etc. At the same time, the farmed California bass has the characteristics of no earthy smell, etc., which can save breeding costs and improve the quality of the bass. The present application can relieve the pressure of water quality regulation when marking seedlings in a captive barrel, improve the survival rate of seedlings, and has the advantages of easy daily management, fishing and zero emissions when breeding in pond cages.

[0015] Additional aspects and advantages of the present application will become apparent in the following description or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic structural diagram of a first floating bed according to an embodiment of the present application; Figure 2 is a physical diagram of a first floating bed according to an embodiment of the present application; Figure 3 is a schematic structural diagram of a second floating bed according to an embodiment of the present application; Figure 4 is a schematic diagram of a farming scene during a transshipment farming process according to an embodiment of the present application; Figure 5 It is a schematic diagram of an actual breeding scene during the transshipment breeding process according to an embodiment of the present application. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] Refer to the following Figures 1 to 5 The invention describes a method and system for breeding California bass based on pen-raising barrel seedlings and pond cages provided in an embodiment of the present application.

[0019] See also Figure 1 The method for breeding California bass based on captive barrel seedlings and pond cages provided in the embodiment of the present application comprises the following steps: The process of labeling seedlings in a barrel: S101. Set up a pen barrel at the bank of the pond; S102. A drainage system is provided at the bottom of the enclosure barrel so that the drainage system is connected to the pond; S103. Add water to the enclosure barrel to a preset water depth, and set a plurality of microporous aeration disks and a first biological floating bed in the enclosure barrel; S104. Release California bass fry of 2-3 cm in length into the enclosure barrel, and control the stocking density to 55-65 per m 3 water bodies; Pond Cage Preparation Process: S201. Select a pond of 5 to 10 mu and set up several cages in the middle of the pond; S202. A plurality of aerators and a second biological floating bed are provided in the pond; S203. According to the preset release standard, bighead carp, silver carp and snails are released into the pond; Transshipment breeding process: S301. When the size of California bass fry in the cage reaches 75-100g, transfer the California bass fry with water to the cage for breeding, and control the breeding density at 35-40 / m 3 Water body.

[0020] In this embodiment, S101. a confinement barrel is set at the bank of the pond. The main reason for setting the confinement barrel at the bank of the pond is the convenience of operation. The bank is convenient for staff to do daily management, such as feeding and observing the growth of California bass seedlings. From a technical point of view, the confinement barrel is relatively independent from the pond and connected through the water supply and drainage system, which can not only utilize the natural water resources of the pond, but also provide a relatively stable and controllable microenvironment for California bass seedlings.

[0021] In this embodiment, S102. An inlet and outlet system is provided at the bottom of the enclosure barrel, so that the inlet and outlet system is connected to the pond. The inlet and outlet system is essential for maintaining good water quality in the enclosure barrel. By connecting to the pond, fresh water rich in dissolved oxygen and beneficial microorganisms in the pond can be introduced in time, and metabolic waste and harmful substances accumulated in the enclosure barrel can be discharged at the same time. For example, when indicators such as ammonia nitrogen and nitrite in the enclosure barrel increase, timely water changes can effectively reduce the concentration of these harmful substances and provide a suitable living environment for California bass seedlings. It is understandable that the enclosure barrel can also use an independent circulating water equipment, and after a series of treatments such as filtration, disinfection, and oxygenation, the purified water is re-injected into the enclosure barrel, which can be set according to actual conditions.

[0022] In this embodiment, S103. water is added to the enclosure barrel to a preset water depth, and a plurality of microporous aeration trays and a first biological floating bed are arranged in the enclosure barrel. Adding water to a preset water depth can provide a suitable activity space for California bass fry. The water depth can be set based on the growth stage and breeding density of the California bass fry. For example, water can be added to the enclosure barrel to a water depth of 1.4m. The microporous aeration tray can efficiently add dissolved oxygen to the water body to ensure the breathing needs of the California bass fry. For example, two microporous aeration trays with a diameter of 80cm can be arranged in the enclosure barrel. The microporous aeration trays are fixed on a 30cm high trapezoidal steel frame to prevent the aeration holes from being blocked by residual bait and feces. California bass is a fish that requires high dissolved oxygen. Adequate dissolved oxygen can increase its feeding rate and growth rate. Please refer to Figure 1 and Figure 2, a first biological floating bed is set up in the confinement barrel. The first biological floating bed can be used to absorb nutrients such as nitrogen and phosphorus in the water body, thereby purifying the water quality. The first biological floating bed can also provide a place for microorganisms and some small aquatic organisms to attach, and these organisms can be used as natural bait for California bass.

[0023] In this embodiment, S104. California bass seedlings with a body length of 2 to 3 cm are placed in the enclosure barrel, and the placement density is controlled at 55 to 65 tails / m³ of water body. California bass is a carnivorous fish. When the body length is 2 to 3 cm, the territorial behavior begins to appear. California bass seedlings with a body length of 2 to 3 cm are selected. At this time, California bass seedlings have a certain survival ability and strong adaptability to the environment. Reasonable control of the placement density is one of the key factors to ensure the growth quality of California bass seedlings. If the placement density is too high, California bass seedlings will grow slowly and decline in physical fitness due to insufficient space, fierce competition for food, and are prone to disease transmission; while too low a density wastes breeding space and resources. In actual operation, the placement density can be appropriately adjusted according to the vitality, health status and breeding conditions of California bass seedlings. For example, if the water quality control ability in the enclosure barrel is strong and the dissolved oxygen is sufficient, the placement density can be appropriately increased, but generally not exceeding the upper limit of 65 tails / m³.

[0024] In this example, see Figure 4 and Figure 5 , S201. Select a pond of 5 to 10 mu and set up several cages in the middle of the pond. The reason for choosing a pond of 5 to 10 mu is that the water body of a pond of this size is relatively stable, and the ecosystem is relatively complete, which is conducive to cage farming. The water body in the middle of the pond is relatively open and the water flow is relatively stable, which can provide a good living environment for the California bass in the cage. At the same time, the cages set in the middle of the pond are also convenient for utilizing the natural oxygenation and self-purification capabilities of the pond. It is understandable that in addition to being set in the middle of the pond, the cages can also be set in other suitable locations according to actual conditions. For example, it can also be cultivated by reasonably arranging the cages on the edge of the pond, but it is necessary to avoid the impact of shore water flow and water quality changes on cage farming.

[0025] In this example, see Figure 4 and Figure 5 , S202. A plurality of aerators and a second biological floating bed are arranged in the pond. Aerators are important equipment for ensuring dissolved oxygen in the pond water, especially when the density of cage aquaculture is high, sufficient dissolved oxygen is essential for the growth and survival of fish. For example, one 3kW aerator can be configured for every 3 to 5 mu. The second biological floating bed is arranged in the pond, which can further purify the pond water quality, absorb the excess nutrients produced by aquaculture in the pond water, and prevent eutrophication of the water body.

[0026] In this embodiment, S203. bighead carp, silver carp and snails are placed into the pond according to the preset placement standard. The main purpose of placing bighead carp and silver carp is to utilize their characteristics as filter-feeding fish to feed on plankton and organic debris in the pond water, thereby regulating water quality and preventing eutrophication of the water body. Bighead carp mainly feeds on zooplankton, while silver carp mainly feeds on phytoplankton. The combination of the two can more comprehensively control the number of plankton in the water body. Snails can not only feed on organic matter at the bottom of the pond, but also serve as natural bait for California bass, providing it with a diverse food source.

[0027] In this embodiment, S301. When the specification of California bass seedlings in the enclosure barrel reaches 75-100g, the California bass seedlings are transported with water to the cage for breeding, and the breeding density is controlled at 35-40 tails / m³ of water body. When the specification is 75-100g, the California bass seedlings are transported. At this time, the California bass seedlings have a certain adaptability, and there is a larger growth space and more abundant food resources in the cage, which is conducive to their rapid growth. Transporting with water can reduce the stress response of California bass seedlings caused by environmental changes and improve the survival rate of transportation. It is also important to reasonably control the cage breeding density. This density range can ensure that California bass has enough space for activities and make full use of cage resources. If the breeding density is too high, the growth rate of California bass will slow down and it is easy to cause diseases; if the breeding density is too low, the breeding efficiency will be reduced.

[0028] In some embodiments, see Figure 1 and Figure 2 In S103, the total area of ​​the first biological floating bed on the surface of the water body in the confinement barrel is less than 10% of the surface area of ​​the water body in the confinement barrel.

[0029] In this embodiment, the total area of ​​the first biological floating bed on the surface of the water body in the captive barrel is less than 10% of the surface area of ​​the water body in the captive barrel. If the total area of ​​the first biological floating bed on the surface of the water body in the captive barrel is too small, the purification effect will be poor, which is not conducive to the growth of California bass. If the total area of ​​the first biological floating bed on the surface of the water body in the captive barrel exceeds 10%, it may affect the growth and development of California bass in the captive barrel. It is understandable that a combination of aquatic plants with different adsorption capacities and purification effects can also be selected to better maintain the ecological balance of the water body while ensuring the purification effect. For example, please refer to Figure 2 and Figure 3 The first biological floating bed can be a foam board, and the aquatic plants planted can be cabbage, which absorbs nitrogen and phosphorus in the enclosure barrel.

[0030] In some embodiments, see Figure 3 and Figure 4 In S202, the total area of ​​the second biological floating bed on the water surface in the pond is 10-15% of the water surface area in the pond.

[0031] In this embodiment, the total area of ​​the second biological floating bed on the surface of the water body in the pond is 10-15% of the surface area of ​​the water body in the pond. This ratio can ensure that the second biological floating bed has a sufficient purification effect on the water body, while not occupying too much of the pond water surface and affecting the light and water flow. If the total area of ​​the second biological floating bed on the surface of the water body in the pond is too small, the purification effect will be poor; if the total area of ​​the second biological floating bed on the surface of the water body in the pond is too large, it may affect the living space and light conditions of other organisms in the pond. For example, please refer to Figure 3 The second biological floating bed can be composed of PVC / PPR pipes, coarse mesh and fine mesh. The area of ​​a single second biological floating bed can be 4~6m 2 The aquatic plants can be water spinach, water celery, etc. The aquatic plants are fixed in the mesh of the upper mesh, 2 to 3 plants are fixed in each mesh, and the second biological floating bed is planted with a planting spacing of 20cm×20cm.

[0032] In some embodiments, in S203, the preset release standard is to release 50 to 70 bighead carps with a size of 100 to 150 g per mu, 120 to 140 silver carps with a size of 100 g per mu, and 3 to 5 jin of snails per mu.

[0033] In this embodiment, the preset release standard is to release 50 to 70 bighead carps with a size of 100 to 150 grams per mu, 120 to 140 silver carps with a size of 100 grams per mu, and 3 to 5 catties of snails per mu. This release standard is determined based on multiple factors such as the area of ​​the pond, the breeding density, and the growth needs of California bass. If the number of releases is too large, it may cause competition for food and living space among fish, affecting the growth effect; if the number of releases is too small, the expected water quality regulation effect cannot be achieved. The release quantity can be fine-tuned according to the pond water quality test results and the plankton mass.

[0034] In some embodiments, water quality control is performed within a preset period so that the transparency of the pond water is controlled at 25-35 cm and the pH value is controlled at 7-8.5.

[0035] In this embodiment, water quality control is performed within a preset period so that the transparency of the pond water is controlled at 25-35 cm and the pH value is controlled at 7-8.5. Appropriate water transparency and pH value are critical to the growth of California bass. Water transparency reflects the content of plankton, organic matter, etc. in the water body. Controlling it at 25-35 cm can ensure that the water body has suitable lighting conditions, promote the growth of plankton such as algae, provide natural bait for fish, and also facilitate the observation of the growth status of fish. The pH value between 7 and 8.5 is an acid-base environment suitable for the survival of California bass. Exceeding this range may affect the physiological function and growth rate of fish. Water quality can be regularly tested and regulated by changing water, adding water quality regulators, etc.

[0036] In some embodiments, during the pond cage preparation process and the transshipment culture process, the standard water level of the pond is higher than 3m.

[0037] In this embodiment, the standard water level of the pond is higher than 3m during the preparation of the pond cage and the transfer and breeding process. A higher water level can provide a larger living space for fish and is also conducive to maintaining the stability of the water body. When the water depth is large, the changes in indicators such as water temperature and dissolved oxygen in different water layers are relatively small, which can create a more stable living environment for fish. If the water level is too low, the water temperature changes greatly during high temperatures in summer or low temperatures in winter, which can easily cause stress to fish and affect their growth.

[0038] See also Figure 4 and Figure 5 The California bass farming system based on the enclosure barrel seedling and pond cage provided in the embodiment of the present application includes an enclosure barrel and a plurality of cages. The enclosure barrel is arranged at the bank of the pond, and the enclosure barrel is used in the enclosure barrel seedling marking process; the plurality of cages are arranged in the middle of the pond, and the cages are used in the transfer farming process. The farming scene in the transfer farming process includes a pond 401, cages 402, a floating bridge 403, a second biological floating bed 404, and an aerator 405.

[0039] In this embodiment, the farming mode combining the enclosure barrel and the cage fully utilizes the advantages of both. The enclosure barrel can provide precise environmental control and management, improving the survival rate and growth quality of California bass seedlings; the cage farming utilizes the natural water resources of the pond, providing a wide space for the subsequent growth of California bass. For example, the diameter of the enclosure barrel can be 6 to 10 meters, and the height can be 1.5 meters, which can be set according to actual conditions. A certain number of cages are set in the middle of the pond according to the size of the pond where the cages are placed, and the cages are connected together by steel frames and floating barrels.

[0040] In some embodiments, a floating bridge structure is disposed around each cage, and the floating bridge structure is used to connect the cages and connect the cages with the shore of the pond.

[0041] In this embodiment, a floating bridge structure is arranged around each cage, and the floating bridge structure is used to connect the cages and connect the cages with the shore of the pond. The floating bridge structure facilitates the staff to carry out daily management of the cages, such as feeding, checking the growth status of California bass, cleaning the cages, etc., and improves the convenience and efficiency of the breeding operation.

[0042] In some embodiments, the distance between the bottom of each cage and the bottom of the pond is greater than 0.6 m, and a microporous oxygenating disk is disposed at the bottom of each cage.

[0043] In this embodiment, the distance between the bottom of each cage and the bottom of the pond is greater than 0.6m, and a microporous aeration disk is provided at the bottom of each cage. The bottom of the cage is kept at a certain distance from the bottom of the pond to prevent the bottom of the cage from contacting the silt and impurities at the bottom of the pond, thereby reducing the risk of disease transmission. For example, California bass are susceptible to anchorhead mullets, whose larvae mostly live in the bottom mud. At the same time, it is also beneficial to the water exchange and dissolved oxygen supplementation at the bottom of the cage. The microporous aeration disk is arranged at the bottom of the cage, which can provide sufficient dissolved oxygen for the water at the bottom of the cage to meet the dissolved oxygen needs of California bass in different water layers.

[0044] In some embodiments, each cage is 6-8 m long, 6-8 m wide, and 2.5 m high, and the total area of ​​the cages on the surface of the pond water is less than 10% of the surface area of ​​the pond water.

[0045] In this embodiment, each cage is 6-8m long, 6-8m wide, and 2.5m high, and the total area of ​​the cages on the surface of the pond water is less than 10% of the surface area of ​​the pond water. Such cage size and layout can ensure that the California bass has enough space to move around, but will not excessively occupy the pond water surface, affecting the overall ecological balance of the pond and other breeding activities. If the cage area is too large, it may cause the pond water to flow poorly, affecting the dissolved oxygen distribution and water quality regulation.

[0046] For example, a confinement barrel can be set at the bank of the pond. The diameter of the confinement barrel can be 8m and the height can be 1.5m. Water is added to the confinement barrel to a depth of 1.4m. Two microporous oxygenating disks with a diameter of 80cm can be set in the confinement barrel. The microporous oxygenating disks are fixed on a 30cm high trapezoidal steel frame. Four microporous oxygenating disks with an area of ​​1m2 can be set in the confinement barrel. 2 The first biological floating bed is used to grow cabbage. California bass fry with a body length of 2-3 cm are released into the enclosure barrel, and the release density can be 60 per m3 of water. In the process of preparing the pond cage, a 7-acre pond can be selected, and 12 cages can be set in the middle of the pond. Each cage is connected by a steel frame and a floating barrel. The length and width of the cage can be 6m respectively, and the height can be 2.5m. The total area of ​​the cage on the water surface in the pond is 432m 2Two 3kw aerators can be installed in the pond to increase oxygen regularly to keep the dissolved oxygen in the water above 6mg / L. Four 6m2 aerators can be installed in the pond to increase oxygen regularly to keep the dissolved oxygen in the water above 6mg / L. 2 The second biological floating bed is used to grow water spinach, water celery and other plants. It is placed around the pond. The total area of ​​the second biological floating bed is 24m 2 , which can be used to absorb nitrogen and phosphorus in the water. 60 bighead carps weighing 150g each, 120 silver carps weighing 100g each, and 21 catties of omnivorous snails can be put into the pond to feed on or filter food residues, organic debris, phytoplankton and zooplankton deposited on the bottom of the water, and jointly regulate the water ecosystem in the pond. When the size of the California bass seedlings in the captive barrel reaches 100g, the California bass seedlings are transferred to the cage with water for breeding, and the breeding density is controlled at 40 / m 3 Water body. During the transshipment breeding process, water quality monitoring and disease prevention measures are carried out regularly. If the water level in the pond drops, the corresponding amount of water is replenished in time, and the transparency of the water body is maintained at 25~35cm, the pH value is 7~8.5, and microecological agents are regularly added to improve the water quality.

[0047] According to the California bass breeding method and system based on the captive barrel seedlings and pond cages provided in the embodiment of the present application, after 4 months of field breeding, the average survival rate of California bass in each cage reached 95%, and the average standard yield was 1532.16 kg. The various indicators of pond water quality monitoring reached the second-class water quality standard.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the specification of this application, the technicians can still modify or replace the specific implementation mode of the present invention with equivalents, but these modifications or changes do not deviate from the scope of protection of the pending claims of the present application.

Claims

1. A method for breeding California bass based on captive barrel seedlings and pond cages, characterized in that: include: The process of labeling seedlings in a barrel: S101. Set up a pen barrel at the bank of the pond; S102. A drainage system is provided at the bottom of the enclosure barrel so that the drainage system is connected to the pond; S103. Add water to the enclosure barrel to a preset water depth, and set a plurality of microporous aeration disks and a first biological floating bed in the enclosure barrel; S104. Release California bass fry of 2-3 cm in length into the enclosure barrel, and control the stocking density to 55-65 per m 3 water bodies; Pond Cage Preparation Process: S201. Select a pond of 5 to 10 mu and set up several cages in the middle of the pond; S202. A plurality of aerators and a second biological floating bed are provided in the pond; S203. According to the preset release standard, bighead carp, silver carp and snails are released into the pond; Transshipment breeding process: S301. When the size of the California bass fry in the cage reaches 75-100 g, the California bass fry is transferred to the cage with water for breeding, and the breeding density is controlled at 35-40 fish / m 3 Water body.

2. The method for breeding California bass based on captive barrel seedlings and pond cages according to claim 1, characterized in that: In S103, the total area of ​​the first biological floating bed on the surface of the water body in the confinement barrel is less than 10% of the surface area of ​​the water body in the confinement barrel.

3. The method for breeding California bass based on captive barrel seedlings and pond cages according to claim 1, characterized in that: In S202, the total area of ​​the second biological floating bed on the surface of the water body in the pond is 10-15% of the surface area of ​​the water body in the pond.

4. The method for breeding California bass based on captive barrel seedlings and pond cages according to claim 1, characterized in that: In S203, the preset release standard is to release 50 to 70 bighead carps weighing 100 to 150 g per mu, 120 to 140 silver carps weighing 100 g per mu, and 3 to 5 jin of snails per mu.

5. The method for breeding California bass based on captive barrel seedlings and pond cages according to claim 1, characterized in that: The transshipment breeding process also includes: Water quality is regulated within a preset period so that the transparency of the pond water is controlled at 25~35cm and the pH value is controlled at 7~8.

5.

6. The method for breeding California bass based on captive barrel seedlings and pond cages according to claim 1, characterized in that: During the pond cage preparation process and the transshipment breeding process, the standard water level of the pond is higher than 3m.

7. A California bass farming system based on captive barrel seedlings and pond cages, characterized in that: include: A pen-raising barrel is arranged at the bank of the pond, and the pen-raising barrel is used for the process of marking seedlings in the pen-raising barrel; A plurality of net cages are arranged in the middle of the pond, and the net cages are used in the transshipment breeding process.

8. The California sea bass breeding system based on captive barrel seedlings and pond cages according to claim 7 is characterized in that: A floating bridge structure is arranged around each of the net cages, and the floating bridge structure is used to connect the net cages and connect the net cages with the shore of the pond.

9. The California sea bass breeding system based on captive barrel seedlings and pond cages according to claim 7, characterized in that: The distance between the bottom of each net cage and the bottom of the pond is greater than 0.6 m, and a microporous oxygenating disk is provided at the bottom of each net cage.

10. The California bass breeding system based on captive barrel seedlings and pond cages according to claim 7, characterized in that: Each of the cages is 6-8m long, 6-8m wide and 2.5m high, and the total area of ​​the cages on the surface of the pond water is less than 10% of the surface area of ​​the pond water.

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