Ecological circulating breeding method for medicinal grass turtles

Abstract

The invention belongs to the technical field of breeding, and discloses an ecological circulating breeding method for medicinal grass turtles, which comprises the following steps: selecting a proper breeding environment, building a breeding pond with a sand filtering layer and a biological filter, and forming an ecological system with high self-cleaning capacity; a circulating water treatment system is adopted, and physical filtration and biodegradation means are combined, so that the stability of water quality is ensured; a scientific feed formula is made, an automatic feeding system is used, timed and quantitative feeding is achieved, and waste is reduced; diseases are prevented and controlled through Chinese herbal medicine prevention and regular health monitoring; in the breeding waste treatment process, anaerobic fermentation and biogas production are utilized, and resource utilization of waste is achieved; the whole method not only can improve the breeding efficiency and medicinal value of the medicinal grass turtles, but also can effectively reduce environmental pollution and realize cyclic utilization of resources.

Description

Technical Field

[0001] The invention relates to the technical field of breeding, in particular to an ecological cycle breeding method for medicinal tortoises. Background Art

[0002] The Chinese tortoise (Chinemys reevesii), also known as the Chinese tortoise, is a freshwater turtle native to China and East Asia. Due to its rich medicinal value, the Chinese tortoise is used in traditional Chinese medicine to treat various diseases, including hepatitis, gastrointestinal diseases, and immune system diseases. In recent years, with the deepening of the understanding of the medicinal value of Chinese tortoises, ecological breeding methods have become an important direction for improving the production efficiency and medicinal value of Chinese tortoises. Ecological cycle breeding can not only improve the growth efficiency of Chinese tortoises, but also increase the content of medicinal ingredients by optimizing the breeding environment, thereby better meeting market demand.

[0003] Traditional methods of breeding grass turtles mainly include pond breeding and cage breeding. Pond breeding maintains water quality by artificially feeding feed and regularly changing water. However, this method has the following problems: first, water quality is difficult to control, and it is easy to cause water pollution and accumulation of harmful substances such as ammonia nitrogen and nitrite; second, resource utilization efficiency is low, and breeding waste is not effectively recycled; third, disease prevention and control is difficult, and grass turtles are susceptible to bacterial and parasitic pathogens.

[0004] In recent years, ecological breeding technology has gradually been introduced into grass turtle breeding. Ecological breeding technology includes establishing a water environment with strong self-purification ability, introducing aquatic plants and microorganisms, and implementing waste treatment and resource recycling. By setting up biological filters and artificial wetland facilities in the breeding pond, organic matter and nitrogen and phosphorus substances in the water can be removed, thereby improving water quality. However, the existing ecological breeding technology still has the following shortcomings: first, the stability and sustainability of the ecosystem are difficult to guarantee; second, the waste treatment method still mainly relies on simple composting and landfilling, and the resource recovery and utilization efficiency is low; third, the disease prevention and control measures are not comprehensive enough and cannot effectively curb the spread of pathogens.

[0005] The present invention proposes an improved ecological cycle breeding method for medicinal grass tortoises, which adopts a comprehensive water quality management system, including multi-stage filtration, biodegradation and plant absorption, and can efficiently remove harmful substances and pathogenic microorganisms in water bodies, reduce dependence on chemical drugs, and reduce environmental burden. By recycling breeding waste, the resource utilization of waste is realized. This method not only reduces environmental pollution, but also improves the utilization efficiency of resources. The introduction of beneficial microorganisms such as lactic acid bacteria and nitrifying bacteria can effectively improve water quality and enhance the immunity of grass tortoises. In addition, combined with the preventive measures of Chinese herbal medicine, the spread of pathogens can be more effectively controlled to ensure the health of grass tortoises. By optimizing the feed formula and breeding environment, the accumulation of medicinal ingredients in grass tortoises can be increased. The low-temperature freeze-drying method is used to extract medicinal ingredients to ensure their activity and stability, while reducing the cost and complexity of the extraction process. Aquatic plants and beneficial organisms are introduced to establish a stable water ecosystem, improve the self-repair ability of the ecosystem, and ensure the long-term stability of the breeding environment.

[0006] Through these innovative measures, the present invention provides an efficient, environmentally friendly and economical ecological cycle breeding method for grass turtles, which not only meets the demand for medicinal ingredients, but also solves the key problems in the prior art and achieves the goal of sustainable breeding. Summary of the invention

[0007] The present invention relates to an ecological cycle breeding method for medicinal tortoises, which improves the environmental quality of tortoise breeding and the accumulation of medicinal ingredients through systematic ecological management measures. Specifically, it includes the following aspects: (1) Multi-level filtration system: A combination of physical, chemical and biological filtration is used to comprehensively purify aquaculture water and remove waste and harmful substances.

[0008] (2) Introduction of aquatic plants: Planting water hyacinth and water lily plants to absorb nitrogen and phosphorus substances and inhibit eutrophication of water bodies.

[0009] (3) Addition of beneficial microorganisms: Regularly introduce lactic acid bacteria and nitrifying bacteria to improve water quality and enhance the immunity of grass turtles.

[0010] (4) Waste treatment: Utilize biogas digesters and composting technology to convert aquaculture waste into biogas and organic fertilizer, thus realizing the recycling of resources.

[0011] (5) Regular monitoring and maintenance: Ensure the stability of the ecosystem and the optimization of the breeding environment through water quality monitoring, biological health checks and system equipment maintenance.

[0012] The present invention improves the growth efficiency and medicinal value of grass tortoises through comprehensive measures, reduces environmental impact, and achieves sustainable development of breeding.

[0013] An ecological cycle breeding method for medicinal tortoises, characterized in that the method comprises the following steps: S1. Site selection and construction of aquaculture environment: Select an area with warm climate, sufficient sunshine, sufficient water source and no pollution as the aquaculture site, build aquaculture pond with a sand and gravel filter layer at the bottom, and combine biological filter tanks and artificial wetlands to form a water environment with strong self-purification ability; S2. Water quality management: Maintain the cleanliness and stability of water bodies through a circulating water treatment system that combines physical filtration, biodegradation and plant absorption; S3. Feed management: Formulate scientific feed formulas based on the nutritional needs of tortoises at different growth stages, and use an automatic feeding system to feed them at regular intervals and in fixed quantities; S4. Disease prevention and control: Enhance the immunity of tortoises through Chinese herbal medicine prevention and regular health checks, and reduce the risk of bacterial and parasitic infections; S5. Extraction of medicinal ingredients: Control the breeding environment and feed ingredients to promote the accumulation of medicinal ingredients in the tortoises, and extract ingredients from mature tortoises; S6. Waste treatment: Anaerobic fermentation or composting of aquaculture waste, and use of biogas digesters to convert organic waste into biogas and organic fertilizer to achieve resource utilization of waste; S7. Ecosystem maintenance: Introduce a variety of aquatic plants and beneficial organisms into the breeding area to build a stable aquatic ecosystem and enhance the overall environmental resistance and self-regulation ability.

[0014] In some embodiments, the culture pond step in step S1 includes: (1) The bottom sediment is a sand and gravel filter layer with a particle size of 0.5-2 cm to enhance the filtration effect of the water body; (2) The water depth of the breeding pond should be controlled between 50-150 cm and adjusted according to the different growth stages of the grass turtle.

[0015] In some embodiments, the step S2 of water quality management comprises: (1) The water temperature is controlled between 22-30℃ to ensure the normal growth of the turtle; (2) Water quality monitoring equipment is used to regularly test key indicators such as dissolved oxygen, pH value, ammonia nitrogen and nitrite, with dissolved oxygen maintained at 5-8 mg / L, pH value between 6.5-8.0, ammonia nitrogen content not exceeding 0.02 mg / L, and nitrite content not exceeding 0.1 mg / L; (3) By adding lactic acid bacteria and nitrifying bacteria microbial flora, the self-purification capacity of the water body is enhanced and the accumulation of harmful substances is prevented.

[0016] In some embodiments, the step S3 of feed management comprises: (1) Animal feed (small fish, shrimp, insects), accounting for 40-60% of the total feed, and plant feed aquatic plants, vegetables and algae accounting for 30-50%; (2) The protein content in the feed should be controlled between 35-45% to meet the nutritional needs of the tortoise; (3) Feed the turtle 2-3 times a day using an automatic feeding system, with each feeding amount being 2-5% of the turtle’s body weight.

[0017] In some embodiments, the step S4 disease prevention and control step includes: (1) Improve the immunity of grass turtles through nutrition optimization and water quality management; (2) Regular use of Chinese herbal medicines including coptis root, isatis root, and honeysuckle to prevent bacterial and parasitic infections; (3) Conduct weekly health checks on turtles and take early intervention measures to control the spread of diseases.

[0018] In some embodiments, the step S5 of extracting medicinal ingredients comprises: (1) By optimizing the environmental temperature, light and feed ingredients, the content of antimicrobial peptides and polysaccharides in tortoises is increased, with the goal of increasing the amount of antimicrobial peptides to 1.5-2 times the amount in conventional feeding; (2) The medicinal ingredients in the body of the grass turtle are extracted by low-temperature freeze-drying to ensure the activity of the ingredients.

[0019] In some embodiments, the waste treatment step S6 comprises: (1) Treat the leftover bait and feces from the breeding process through anaerobic fermentation, and control the fermentation cycle to 30-45 days; (2) After being processed in a biogas digester, each ton of waste produces 200-300 cubic meters of biogas, which is used as energy in the farm. The remaining material is converted into organic fertilizer, with a conversion rate of 85%-100%.

[0020] In some embodiments, the step S7 ecosystem maintenance includes: Introduce aquatic plants such as water lilies and water hyacinths into the breeding ponds, plant ≥ 2 aquatic plants per square meter of water surface, and the plant coverage rate is ≥ 30% of the water surface. In addition, introduce beneficial organisms such as loaches and earthworms to build a stable aquatic ecosystem and enhance environmental resistance.

[0021] In some of the embodiments, the biogas production is 200-300 cubic meters of biogas per ton of waste processed for daily energy use in the farm.

[0022] In some embodiments, the lactic acid bacteria are Lactobacillus or Streptococcus thermophilus, and the nitrifying bacteria microbial flora are Nitrosomonas or Nitrobacter.

[0023] The present invention has the following advantages (1) Comprehensive water quality management: The present invention achieves comprehensive purification and optimization of aquaculture water and stabilizes the water quality environment through the use of a multi-level filtration system combined with aquatic plants and beneficial microorganisms. This comprehensive measure not only reduces harmful substances in the water, but also improves the growth conditions and medicinal ingredient content of grass turtles.

[0024] (2) Efficient utilization of resources: The present invention uses biogas digesters and composting technology to treat aquaculture waste, converting waste into energy and organic fertilizer, thereby achieving resource recycling. This method not only reduces environmental pollution, but also improves resource utilization efficiency and supports the sustainable development of the ecosystem. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the technical implementation method of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in combination with the technical process steps, specific implementation conditions and materials in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0026] Multi-level water filtration system in standard breeding ponds Implementation environment: Ecological cycle breeding of grass turtles is carried out in a standard breeding pond with an area of ​​600 square meters and a depth of 1.5 meters.

[0027] Multi-level filtration system: (1) Mechanical filtration: Install a mechanical filter with a mesh size of 0.5 mm, which is mainly used to remove suspended particles in the water.

[0028] (2) Sedimentation tank: A sedimentation tank with a volume of 10% of the aquaculture pond is set up to settle larger solid waste.

[0029] (3) Biofilter: A biofilter with a volume of 15% of the volume of the culture pond is used, containing Nitrosomonas and Nitrobacter, with a bacterial density of 10 6 CFU / L, mainly used to decompose ammonia nitrogen and nitrite.

[0030] (4) Chemical filtration: Use activated carbon filters and replace them every 6 months to ensure that organic pollutants and odors in the water are effectively removed.

[0031] Aquatic plants: Plant water hyacinth and reeds to cover 30% of the water surface of the breeding pond. These plants can effectively absorb nitrogen and phosphorus in the water and inhibit the occurrence of eutrophication.

[0032] Water quality monitoring: Test water quality weekly to ensure that the pH value remains between 6.8 and 7.2, the ammonia nitrogen concentration is ≤0.3 mg / L, and the dissolved oxygen content is ≥6 mg / L.

[0033] Breeding effect: After 6 months of breeding, the survival rate of grass turtles reached 95%, the average weight increased by 30%, and the content of the medicinal ingredient turtle saponin increased by 25%. Example

[0034] Multi-level water filtration system in standard breeding ponds Implementation environment: Ecological cycle breeding of grass turtles is carried out in a standard breeding pond with an area of ​​800 square meters and a depth of 2 meters.

[0035] Multi-level filtration system: (1) Mechanical filtration: Install a mechanical filter with a mesh size of 0.8 mm, which is mainly used to remove suspended particles in the water.

[0036] (2) Sedimentation tank: A sedimentation tank with a volume of 20% of the aquaculture pond is set up to settle larger solid waste.

[0037] (3) Biofilter: A biofilter with a volume of 20% of the aquaculture pond is used, containing Nitrosomonas and Nitrobacter bacteria with a bacterial density of 10 7 CFU / L, mainly used to decompose ammonia nitrogen and nitrite.

[0038] (4) Chemical filtration: Use activated carbon filters and replace them every 7 months to ensure that organic pollutants and odors in the water are effectively removed.

[0039] Aquatic plants: Plant water hyacinth and reeds to cover 30% of the water surface of the breeding pond. These plants can effectively absorb nitrogen and phosphorus in the water and inhibit the occurrence of eutrophication.

[0040] Water quality monitoring: Test water quality weekly to ensure that the pH value remains between 6.5 and 7.5, the ammonia nitrogen concentration is ≤0.5 mg / L, and the dissolved oxygen content is ≥7 mg / L.

[0041] Breeding effect: After 7 months of breeding, the survival rate of grass turtles reached 94%, the average weight increased by 32%, and the content of the medicinal ingredient turtle saponin increased by 28%. Example

[0042] High-density breeding and resource recycling system Implementation environment: Intensive ecological breeding of grass turtles is carried out in a high-density breeding pond with an area of ​​400 square meters and a depth of 2 meters.

[0043] High-density breeding: The high-density breeding method of 25 per square meter significantly increases the output per unit area.

[0044] Enhanced filtration system: (1) Double-layer mechanical filter: Use two layers of filter screens with pore sizes of 0.3mm and 0.5mm respectively to ensure that particulate matter in the water is removed more thoroughly.

[0045] (2) Large sedimentation tank: A sedimentation tank with a volume of 15% of the volume of the aquaculture pond, used to settle more waste and cleaned regularly to prevent blockage.

[0046] (3) Biofilter: Expand the capacity of the biofilter to 20% of the volume of the aquaculture pond and use high-density nitrifying bacteria with a bacterial population density of 10 7 CFU / L, added twice a week to ensure rapid conversion of ammonia nitrogen.

[0047] Waste treatment and recycling: (1) Biogas digester: The biogas digester has a daily processing capacity of 5 cubic meters. It converts the feces and leftover bait of grass turtles into biogas, which is used as energy supply for the farm. The remaining biogas residue is used as organic fertilizer.

[0048] (2) Composting system: Solid waste is composted and produces high-quality organic fertilizer after three months, which is used to fertilize surrounding farmland.

[0049] Breeding effect: After 6 months, the breeding density increased significantly, the average weight of grass turtles increased by 35%, the content of polysaccharides, a medicinal ingredient, increased by 20%, and the breeding efficiency was significantly improved. Example

[0050] High-density breeding and resource recycling system Implementation environment: Intensive ecological breeding of grass turtles is carried out in a high-density breeding pond with an area of ​​500 square meters and a depth of 2.5 meters.

[0051] High-density breeding: The high-density breeding method of 30 per square meter significantly increases the output per unit area.

[0052] Enhanced filtration system: (1) Double-layer mechanical filter: Use two layers of filter screens with pore sizes of 0.5mm and 0.8mm respectively to ensure that particulate matter in the water is removed more thoroughly.

[0053] (2) Large sedimentation tank: A sedimentation tank with a volume of 20% of the volume of the aquaculture pond, used to settle more waste and cleaned regularly to prevent blockage.

[0054] (3) Biofilter: Expand the capacity of the biofilter to 25% of the volume of the aquaculture pond, use high-density nitrifying bacteria with a bacterial density of 10^8 CFU / L, and add twice a week to ensure rapid conversion of ammonia nitrogen.

[0055] Waste treatment and recycling: (1) Biogas digester: The biogas digester has a daily processing capacity of 7 cubic meters. It converts the feces and leftover bait of grass turtles into biogas, which is used as energy supply for the farm. The remaining biogas residue is used as organic fertilizer.

[0056] (2) Composting system: Solid waste is composted and produces high-quality organic fertilizer after 4 months, which is used to fertilize surrounding farmland.

[0057] Breeding effect: After 5 months, the breeding density increased significantly, the average weight of the tortoise increased by 38%, the content of polysaccharides, a medicinal ingredient, increased by 30%, and the breeding efficiency was significantly improved. Example

[0058] Low-density aquaculture and aquatic plant optimization system Implementation environment: Ecologically optimized tortoise farming is carried out in a low-density breeding pond with an area of ​​300 square meters and a depth of 1.2 meters.

[0059] Low-density breeding: adopting a low-density breeding method of 15 per square meter reduces competition between individuals and reduces the risk of disease transmission.

[0060] Aquatic plant coverage: 40% of the water surface is covered with aquatic plants, including water hyacinth, water lily and reed. Water hyacinth has a strong ability to absorb nitrogen and phosphorus, water lily purifies water through its root system, and reed helps stabilize the water ecosystem.

[0061] Simplified filtration system: (1) Sedimentation tank: A sedimentation tank with a volume of 8% of the aquaculture pond, used to treat smaller amounts of waste.

[0062] (2) Biological filter: Reduce to 10% of the volume of the culture pond, the density of nitrifying bacteria is 10^5 CFU / L, and the addition frequency is maintained at a low concentration, once every two weeks.

[0063] Water quality monitoring: Monitor water quality weekly, maintain pH value at 6.5-7.0, dissolved oxygen ≥6 mg / L, and ammonia nitrogen concentration ≤0.2 mg / L.

[0064] Breeding effect: After 4 months of breeding, the water quality is stable, the grass turtles are in good health, the average weight has increased by 25%, and the content of medicinal ingredients protein and amino acids has increased by 20%, with good market value. Example

[0065] Low-density aquaculture and aquatic plant optimization system Implementation environment: Ecologically optimized tortoise farming is carried out in a low-density breeding pond with an area of ​​400 square meters and a depth of 1.5 meters.

[0066] Low-density breeding: adopting a low-density breeding method of 17 per square meter reduces competition between individuals and reduces the risk of disease transmission.

[0067] Aquatic plant coverage: 50% of the water surface is covered with aquatic plants, including water hyacinth, water lily and reed. Water hyacinth has a strong ability to absorb nitrogen and phosphorus, water lily purifies water through its root system, and reed helps stabilize the water ecosystem.

[0068] Simplified filtration system: (1) Sedimentation tank: A sedimentation tank with a volume of 10% of the aquaculture pond, used to treat smaller amounts of waste.

[0069] (2) Biological filter: Reduce to 8% of the volume of the culture pond, the density of nitrifying bacteria is 10^6 CFU / L, and the addition frequency is maintained at a low concentration, twice every two weeks.

[0070] Water quality monitoring: Monitor water quality weekly, maintain pH value at 6.7-7.5, dissolved oxygen ≥8mg / L, ammonia nitrogen concentration ≤0.4mg / L.

[0071] Breeding effect: After 5 months of breeding, the water quality is stable, the grass turtles are in good health, the average weight has increased by 30%, and the content of medicinal ingredients protein and amino acids has increased by 24%, with good market value.

[0072] It can be seen from the above embodiments that the breeding effect of embodiment 4 is the best.

[0073] Technical personnel should note that although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention, and any modification using the inventive concept will be included in the scope of protection of this patent.

Claims

1. An ecological cycle breeding method for medicinal tortoises, characterized in that: The method comprises the following steps: S1. Site selection and construction of aquaculture environment: Select an area with warm climate, sufficient sunshine, sufficient water source and no pollution as the aquaculture site, build aquaculture pond with a sand and gravel filter layer at the bottom, and combine biological filter tanks and artificial wetlands to form a water environment with strong self-purification ability; S2. Water quality management: Maintain the cleanliness and stability of water bodies through a circulating water treatment system that combines physical filtration, biodegradation and plant absorption; S3. Feed management: Formulate scientific feed formulas based on the nutritional needs of tortoises at different growth stages, and use an automatic feeding system to feed them at regular intervals and in fixed quantities; S4. Disease prevention and control: Enhance the immunity of tortoises through Chinese herbal medicine prevention and regular health checks, and reduce the risk of bacterial and parasitic infections; S5. Extraction of medicinal ingredients: Control the breeding environment and feed ingredients to promote the accumulation of medicinal ingredients in the tortoises, and extract ingredients from mature tortoises; S6. Waste treatment: Anaerobic fermentation or composting of aquaculture waste, and use of biogas digesters to convert organic waste into biogas and organic fertilizer to achieve resource utilization of waste; S7. Ecosystem maintenance: Introduce a variety of aquatic plants and beneficial organisms into the breeding area to build a stable aquatic ecosystem and enhance the overall environmental resistance and self-regulation ability.

2. The ecological cycle breeding method of a medicinal tortoise according to claim 1 is characterized in that: The breeding pond in step S1 comprises: (1) The bottom sediment is a sand and gravel filter layer with a particle size of 0.5-2 cm to enhance the filtration effect of the water body; (2) The water depth of the breeding pond should be controlled between 50-150 cm and adjusted according to the different growth stages of the grass turtle.

3. The ecological cycle breeding method of a medicinal tortoise according to claim 1 is characterized in that: The step S2 of water quality management comprises: (1) The water temperature is controlled between 22-30℃ to ensure the normal growth of the turtle; (2) Water quality monitoring equipment is used to regularly test key indicators such as dissolved oxygen, pH value, ammonia nitrogen and nitrite, with dissolved oxygen maintained at 5-8 mg / L, pH value between 6.5-8.0, ammonia nitrogen content not exceeding 0.02 mg / L, and nitrite content not exceeding 0.1 mg / L; (3) By adding lactic acid bacteria and nitrifying bacteria microbial flora, the self-purification capacity of the water body is enhanced and the accumulation of harmful substances is prevented.

4. The ecological cycle breeding method of a medicinal tortoise according to claim 1 is characterized in that: The step S3 of feed management comprises: (1) Animal feed accounts for 40-60% of the total feed, and plant feed such as aquatic plants, vegetables and algae accounts for 30-50%; (2) The protein content in the feed should be controlled between 35-45% to meet the nutritional needs of the tortoise; (3) Feed the turtle 2-3 times a day using an automatic feeding system, with each feeding amount being 2-5% of the turtle’s body weight.

5. The ecological cycle breeding method of a medicinal tortoise according to claim 1 is characterized in that: The disease prevention and control step S4 comprises: (1) Improve the immunity of grass turtles through nutrition optimization and water quality management; (2) Regular use of Chinese herbal medicines including coptis root, isatis root, and honeysuckle to prevent bacterial and parasitic infections; (3) Conduct weekly health checks on turtles and take early intervention measures to control the spread of diseases.

6. The ecological cycle breeding method of a medicinal tortoise according to claim 1 is characterized in that: The step S5 of extracting medicinal ingredients comprises: (1) By optimizing the environmental temperature, light and feed ingredients, the content of antimicrobial peptides and polysaccharides in tortoises is increased, with the goal of increasing the amount of antimicrobial peptides to 1.5-2 times the amount in conventional feeding; (2) The medicinal ingredients in the body of the grass turtle are extracted by low-temperature freeze-drying to ensure the activity of the ingredients.

7. The ecological cycle breeding method of medicinal tortoise according to claim 1 is characterized in that: The waste treatment step S6 comprises: (1) Treat the leftover bait and feces from the breeding process through anaerobic fermentation, and control the fermentation cycle to 30-45 days; (2) After being processed in a biogas digester, each ton of waste produces 200-300 cubic meters of biogas, which is used as energy in the farm. The remaining material is converted into organic fertilizer, with a conversion rate of 85%-100%.

8. The ecological cycle breeding method of medicinal tortoise according to claim 1 is characterized in that: The step S7 ecosystem maintenance includes: Introduce aquatic plants such as water lilies and water hyacinths into the breeding ponds, plant ≥ 2 aquatic plants per square meter of water surface, and the plant coverage rate is ≥ 30% of the water surface. In addition, introduce beneficial organisms such as loaches and earthworms to build a stable aquatic ecosystem and enhance environmental resistance.

9. The breeding method according to claim 7, characterized in that: The biogas output is 200-300 cubic meters of biogas per ton of waste processed, which is used for daily energy in the farm.

10. The breeding method according to claim 3, characterized in that: The lactic acid bacteria are lactobacillus or thermophilic streptococci, and the nitrifying bacteria microbial flora are nitrosomonas or nitrobacter.