CN110089483B - Serial circulating water culture system and method for running water fish-raising groove, shrimp and crab - Google Patents
Serial circulating water culture system and method for running water fish-raising groove, shrimp and crab Download PDFInfo
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- CN110089483B CN110089483B CN201910481865.7A CN201910481865A CN110089483B CN 110089483 B CN110089483 B CN 110089483B CN 201910481865 A CN201910481865 A CN 201910481865A CN 110089483 B CN110089483 B CN 110089483B
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/60—Fishing; Aquaculture; Aquafarming
Abstract
The invention belongs to the technical field of aquaculture, and discloses a running water fish-raising tank, a serial circulating water-raising system for shrimps and crabs and a raising method, wherein fish are bred in a plurality of parallel-arranged water-raising tanks arranged on a ridge, microporous oxygenation equipment is arranged at the bottom of the water-raising tanks, and fish blocking nets are arranged at two ends of the water-raising tanks; the air-lift type oxygenation water pushing machine is arranged at the upstream of the cultivation water flowing groove, and the sewage collecting tank is arranged at the downstream of the cultivation water flowing groove; the bottom of the sewage collecting tank is provided with a plurality of cone-shaped sewage collecting funnels; an artificial floating bed is arranged at the tail end of the sewage collecting pool; fish are put in the constructed wetland purifying area arranged at the downstream of the sewage collecting pool and aquatic plants are planted; the rear end of the sewage collection pool is communicated with the shrimp pool, the crab pool is adjacent to the shrimp pool, and the shrimp and crab pools are provided with aquatic weeds; snails are put in a purified water recycling area arranged at the rear end of the crab pool. The invention realizes the cyclic utilization of water resources, achieves the effect of zero emission, and simultaneously breeds various aquatic products in the system, thereby improving the economic benefit of breeding.
Description
Technical Field
The invention belongs to the technical field of aquaculture, and particularly relates to a serial circulating water aquaculture system and a serial circulating water aquaculture method for running water fish tanks, shrimps and crabs.
Background
Currently, the closest prior art: the physical purification method mainly adopts mechanical equipment to treat the polluted water body, has obvious short-term emergency effect, and is not suitable for long-term operation of the system; the chemical purifying method adds chemical reagent into the polluted water body, which not only increases the production cost, but also is easy to cause secondary pollution to the water body; the biological purification method can remove dissolved organic pollutants and inhibit pathogenic bacteria, but the application range is narrow, and the single adaptability of the variety is poor.
The cultivation wastewater in the production process of the common open cultivation mode is directly discharged, and a large amount of inorganic and organic nutrient elements such as ammonia nitrogen, phosphate, soluble organic carbon, organic particles and the like directly enter the environment, so that the water area environment is deteriorated, and further, the water quality pollution and disease breeding are caused. The traditional physical and chemical treatment modes not only increase the production cost and reduce the cultivation benefit, but also easily cause secondary pollution to the water body and seriously affect the safety and quality of aquatic products.
In summary, the problems of the prior art are:
in the prior art, the open culture is easy to cause the deterioration of the water area environment, thereby causing the water quality pollution and disease breeding. The adopted treatment modes such as polluted water chemistry and the like have high production cost, reduce the culture benefit, easily cause secondary pollution to the water body and seriously influence the safety and quality of aquatic products.
The difficulty of solving the technical problems is as follows:
in the process of treating the cultivation wastewater, the existing environmental factors and the investment of resources in the purification process are comprehensively considered, so that various indexes of the treated water body can reach standard lines, the environmental load is reduced, the cost is reduced, the cultivation economic benefit is improved, and the optimal balance point between the two needs to be found.
Meaning of solving the technical problems: china is a large country of aquatic products, in recent years, the technology of the treatment of the aquaculture tail water of China has certain achievements in theory and production practice, but the research on the circulating water aquaculture mode which is suitable for the current domestic aquaculture economic level needs further improvement, and the core is standardization and accuracy of the treatment of the high-density aquaculture tail water, the exploration of an energy-saving, emission-reducing, small-occupied and simple process route, the reduction of the requirements on mechanical equipment and chemical reagents and the further optimization of the technology can promote the aquaculture industry of China to develop and promote in a faster and better direction.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a serial circulating water culture system and a culture method for running water fish tanks, shrimps and crabs. The water body is recycled through multiple purification, zero emission is achieved, and the comprehensive cultivation of fishes, shrimps and crabs improves the overall economic benefit of cultivation.
The invention discloses a water culture method for fish tanks, shrimps and crabs, which comprises the following steps:
the fish is put in a plurality of parallel culture water flowing tanks arranged on the ridge, microporous oxygenation equipment is arranged at the bottom of the fish, and fish blocking nets are arranged at two ends of the culture water flowing tanks.
The air-lift type oxygenation water pushing machine is arranged at the upstream of the cultivation water flowing groove, and the sewage collecting tank is arranged at the downstream of the cultivation water flowing groove. The bottom of the sewage collecting tank is provided with a plurality of cone-shaped sewage collecting funnels, and the funnels are connected through PVC pipelines and then communicated with a sewage drain well on the bank.
An artificial floating bed is arranged at the tail end of the sewage collecting pool, and vegetables are planted in the artificial floating bed.
Fish are put in the constructed wetland purifying area arranged at the downstream of the sewage collecting pool and aquatic plants are planted.
The rear end of the sewage collecting pool is communicated with the shrimp pool, the crab pool is adjacent to the shrimp pool, and the shrimp and crab pools are provided with aquatic weeds.
Snails are put in a purified water recycling area arranged at the rear end of the crab pool, and active carbon and medical stones are stacked at two sides of the overflow dam.
Further, the culture launders adopt a net cage structure, aeration devices are arranged on two sides of each culture launder, and microporous oxygenation equipment is arranged at the bottom of the front section of each culture launder.
Further, a 6 multiplied by 6 rectangular cone bottom is established between the bottom of the cultivation water flowing groove and the pond bottom, the center of each dirt collecting cone bottom is connected with the dirt collecting funnel, and the upper opening is in butt joint with the bottom of the cultivation water flowing groove. The funnels are connected through PVC pipelines and then are communicated with a drain well on the bank, a drain pump with a liquid level switch is arranged in the funnel, and collected dirt is compressed into cakes through a compression device to be used as fertilizer.
Furthermore, emergent aquatic plants planted in the artificial wetland purification area are calamus and reed, and submerged plants are hydrilla verticillata, bitter grass, waterweed and water chestnut aquatic plants.
The invention further aims at providing a fish tank, shrimp and crab water culture system which is provided with a pond. The ridge separates the pond into a plurality of ponds.
A plurality of cultivation water flowing tanks which are arranged in parallel are arranged on the eastern surface of the ridge, and microporous oxygenation equipment is arranged at the bottom of each cultivation water flowing tank.
The two ends of each cultivation water flowing groove are respectively provided with a fish blocking net, the upstream of each cultivation water flowing groove is provided with a gas-lifting type oxygenation water pushing machine, the downstream of each cultivation water flowing groove is provided with a sewage collecting tank, the bottom of each sewage collecting tank is provided with a plurality of funnels, and the bottom ends of the funnels are communicated with a sewage drain well on the bank.
An artificial wetland purifying area is arranged at the downstream of the sewage collecting pool, the rear end of the artificial wetland purifying area is communicated with the shrimp pool, the crab pool is adjacent to the shrimp pool, water in the crab pool flows into the purified water recycling area, and purified water flowing into the water tank through the purified water recycling area.
Further, the bottom of the sewage collecting tank is provided with 36 conical sewage collecting funnels, the funnels are connected through PVC pipelines and then are communicated with a sewage drain well on the bank, sewage is processed and compressed into a filter cake through mechanical equipment to be used as fertilizer, and water spinach is planted in an artificial floating bed placed at the tail end of the sewage collecting tank.
Further, the shrimp pool and the crab pool are respectively provided with aquatic weeds.
Further, snails are put in the purified water recycling area, and active carbon and medical stone are stacked at two sides of the overflow dam.
In summary, the invention has the advantages and positive effects that: through preliminary detection, the retention rate of the conical funnel at the bottom of the sewage collection tank on solid waste in the culture tail water can reach 40-50%, and the average removal rate of TN of the whole circulation system is 71.27%. The average removal rate of TP was 68.76%. NH (NH) 4 + The average removal of N was 55.42%. COD (chemical oxygen demand) Mn The average removal rate of the water is 22.43 percent, the purified water quality meets the class III standard of the water environment quality standard (GB 3838-2002) of the landmark, and the water can enter the culture water tank againAnd the circulation is performed, so that the pollution to the environmental water body and the excessive investment in resources are successfully reduced. The cultivation system is shown in Table 1 in detail compared with the prior art.
TABLE 1 comparison of four classes of aquaculture tail water treatment techniques
The invention is composed of six areas of a running water fish-raising tank, a sewage collecting area, an artificial wetland purifying area, a shrimp pool, a crab pool and a purified water recycling area. The culture tail water in the water flowing groove area flows through other areas, is purified to different degrees in each partial area, and then enters the water flowing groove again, so that the water resource recycling is realized, the effect of zero emission is achieved, various aquatic products are cultured in the system at the same time, and the economic benefit of culture is improved.
Drawings
FIG. 1 is a diagram of a fish tank, shrimp and crab aquaculture system according to an embodiment of the present invention.
In the figure: 1. a water flowing groove. 2. A sewage collecting pool. 3. And an artificial wetland purifying area. 4. And (5) a shrimp pond. 5. And (5) a crab pool. 6. And a purified water recycling area.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the prior art, the open culture is easy to cause the deterioration of the water area environment, thereby causing the water quality pollution and disease breeding. The adopted treatment modes such as polluted water chemistry and the like have high production cost, reduce the culture benefit, easily cause secondary pollution to the water body and seriously influence the safety and quality of aquatic products.
In order to solve the above problems, the present invention will be described in detail with reference to the accompanying drawings.
The water culture method for the fish-raising tanks, the shrimps and the crabs provided by the embodiment of the invention comprises the following steps:
the fish is put in a plurality of parallel culture water flowing tanks arranged on the ridge, microporous oxygenation equipment is arranged at the bottom of the fish, and fish blocking nets are arranged at two ends of the culture water flowing tanks.
The air-lift type oxygenation water pushing machine is arranged at the upstream of the cultivation water flowing groove, and the sewage collecting tank is arranged at the downstream of the cultivation water flowing groove. The bottom of the sewage collecting tank is provided with a plurality of cone-shaped sewage collecting funnels, and the funnels are connected through PVC pipelines and then communicated with a sewage drain well on the bank.
An artificial floating bed is arranged at the tail end of the sewage collecting pool, and vegetables are planted in the artificial floating bed.
Fish are put in the constructed wetland purifying area arranged at the downstream of the sewage collecting pool and aquatic plants are planted.
The rear end of the sewage collecting pool is communicated with the shrimp pool, the crab pool is adjacent to the shrimp pool, and the shrimp and crab pools are provided with aquatic weeds.
Snails are put in a purified water recycling area arranged at the rear end of the crab pool, and active carbon and medical stones are stacked at two sides of the overflow dam.
As shown in fig. 1, the fish-raising tank, shrimp and crab water culture provided by the embodiment of the invention is provided with a pond, the pond is separated by a ridge, a plurality of culture water-flowing tanks 1 which are arranged in parallel are arranged on the eastern surface of the ridge, fish are bred in each water-flowing tank 1, microporous oxygenation equipment is arranged at the bottom, fish blocking nets are arranged at the two ends of each water-flowing tank, an air-lifting oxygenation water pusher is arranged at the upstream of each water-flowing tank, a sewage collecting tank 2 is arranged at the downstream of each water-flowing tank, 36 conical sewage collecting funnels are arranged at the bottom of each sewage collecting tank 2, the funnels are connected through PVC (polyvinyl chloride) pipelines and then are connected with a drain well at the bank, and an artificial floating bed is arranged at the tail end of each water-flowing tank, and water spinach is planted in each water-flowing tank. The downstream of the sewage collecting pool 2 is provided with an artificial wetland purifying area 3, and the fish bred in the artificial wetland purifying area are silver carp, swamp catfish, grass carp and the like, and the planted aquatic plants are calamus, reed, black algae, bitter grass, waterweed, water chestnut and the like. The rear end is communicated with the shrimp pond 4, the crab pond 5 is adjacent to the shrimp pond 4, water plants are arranged in the shrimp and crab ponds and are increased and decreased according to specific conditions, a purified water recycling area 6 is arranged at the rear end of the crab pond, a small amount of snails are put in the purified water recycling area 6, active carbon and medical stone are stacked on two sides of an overflow dam, and further purified water flows into the water flowing groove 1 for recycling.
In the concrete implementation process, a pond of 20-30 mu can be selected for transformation, the site selection is required to be convenient in traffic, the surrounding ecological environment is excellent, a stable power supply is provided, and the water quality source and the relatively independent water inlet and outlet pipelines meet the national fishery production standard.
The construction clearance length of the culture water flowing groove is 20 meters, the width is 26 meters, the height is 2 meters, the water groove adopts a net cage design, aeration devices are arranged on two sides of each water groove, and microporous oxygenation equipment is arranged at the bottom of the front section, so that water body is enriched with dissolved oxygen.
The construction clearance of the sewage collecting area is 21 meters, the width is 26 meters, the height is 2 meters, 6X 6 rectangular cone bottoms are established between the bottom of the net cage and the pond bottom, 36 in total, the center of each sewage collecting cone bottom is connected with the sewage collecting funnel, and the upper opening is butted with the bottom of the net cage. The funnels are connected through PVC pipelines and then are communicated with a drain well on the bank, the specification of the drain well is 1 m multiplied by 3 m, a drain pump with a liquid level switch is arranged in the drain well, and collected dirt is compressed into cakes through a compression device in the later stage and used as fertilizer.
The total area of the constructed wetland purification area is 6.2 mu, the planted emergent aquatic plants such as calamus, reed and the like have the purification effect on water body by the aquatic plants such as leaf-black algae, bitter grass, waterweed, water chestnut and the like, can absorb N, P in the water body, then perform photosynthesis, increase the oxygen content in the water body, absorb carbon dioxide and regulate the balance of carbonate concentration in the water, so that the PH in the water is raised and is slightly alkaline. The content of dissolved oxygen in the water body is increased, so that the decomposition of organic matters can be quickened, organic nitrogen is converted into ammonia nitrogen, and the nitration reaction is promoted, thereby avoiding the accumulation of ammonia nitrogen and nitrite nitrogen. The silver carp and bighead carp belongs to filter feeding fishes, plankton is used as natural bait, transfer of nitrogen and phosphorus in water is realized, and the effect of purifying the water is achieved.
The area of the shrimp and crab culture pond is 5.5 mu, aquatic plants are cultivated and aquatic plants are put in, the aquatic plants can be used for shading and cooling in summer at high temperature, tender leaves and scraps of the aquatic plants can be used for freshwater shrimps and river crabs to eat, hidden places can be provided for inhabitation and unshelling of the shrimps and crabs, and in addition, the aquatic plants can increase the transparency and the dissolved oxygen rate of the shrimp and crab culture pond. The aquatic weeds contain a plurality of medicinal components, such as a large number of organic matters including alkaloid, organic acid, aminopurine, pyrimidine and the like, have the effects of sterilizing, diminishing inflammation, detoxifying, detumescence, hemostasis, strengthening and the like, are natural Chinese herbal medicines, have non-negligible pharmacological effects in healthy cultivation, can be fished and sold in the later period of the cultivated shrimps and crabs, and have higher economic value.
The purified water recycling area has the total length of 80 meters, the water depth of 2.2 meters, the upper width of 16 meters, the crab pool and the lower width of 6 meters, and is communicated with the water flowing groove, and a small amount of snails are put in, and some activated carbon and medical stone are stacked on the two sides of the overflow dam, so that the water quality is further purified.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The water culture method for the fish tank, the shrimp and the crab is characterized by comprising the following steps of:
fish are bred in a plurality of parallel-arranged breeding water flowing tanks arranged on the ridge, microporous oxygenation equipment is arranged at the bottom of the breeding water flowing tanks, and fish blocking nets are arranged at two ends of each breeding water flowing tank;
the air-lift type oxygenation water pushing machine is arranged at the upstream of the cultivation water flowing groove, and the sewage collecting tank is arranged at the downstream of the cultivation water flowing groove; the bottom of the sewage collecting tank is provided with a plurality of cone-shaped sewage collecting funnels, and the funnels are connected through PVC pipelines and then communicated with a sewage drain well on the bank;
an artificial floating bed is arranged at the tail end of the sewage collecting pool, and vegetables are planted in the artificial floating bed;
fish are put in the constructed wetland purifying area arranged at the downstream of the sewage collecting pool and aquatic plants are planted;
the rear end of the constructed wetland purification area is communicated with a shrimp pond, the crab pond is adjacent to the shrimp pond, and water plants are arranged in the shrimp and crab pond;
snails are put in a purified water recycling area arranged at the rear end of the crab pool, and active carbon and medical stones are stacked at two sides of an overflow dam;
the culture launders adopt a net cage structure, aeration devices are arranged on two sides of each culture launder, and microporous oxygenation equipment is arranged at the bottom of the front section of each culture launder;
a 6 multiplied by 6 rectangular cone bottom is established between the bottom of the cultivation water flow groove and the pond bottom, the center of each sewage collecting cone bottom is connected with a sewage collecting funnel, and the upper opening is in butt joint with the bottom of the cultivation water flow groove; the funnels are connected through PVC pipelines and then are communicated with a drain well on the bank, a drain pump with a liquid level switch is arranged in the funnel, and collected dirt is compressed into cakes through a compression device to be used as fertilizer.
2. The method for raising fish, shrimp and crab according to claim 1, wherein the emergent aquatic plants planted in the purification area of the artificial wetland are calamus, reed, and the submerged plants are hydrilla verticillata, kucao, ilex latifolia and water chestnut aquatic plants.
3. A fish tank, shrimp, crab water culture system for realizing the fish tank, shrimp, crab water culture method of claim 1, characterized in that the fish tank, shrimp, crab water culture system is provided with a pond; the ridge separates a plurality of ponds;
a plurality of cultivation water flowing tanks which are arranged in parallel are arranged on the eastern surface of the ridge, and microporous oxygenation equipment is arranged at the bottom of each cultivation water flowing tank;
the two ends of each cultivation water flowing groove are respectively provided with a fish blocking net, the upstream of each cultivation water flowing groove is provided with a gas-lifting type oxygenation water pushing machine, the downstream of each cultivation water flowing groove is provided with a sewage collecting tank, the bottom of each sewage collecting tank is provided with a plurality of funnels, and the bottom ends of the funnels are communicated with a sewage drain well on the bank side;
an artificial wetland purifying area is arranged at the downstream of the sewage collecting pond, the rear end of the artificial wetland purifying area is communicated with the shrimp pond, the crab pond is adjacent to the shrimp pond, water in the crab pond flows into the purified water recycling area, and purified water flowing into the water tank through the purified water recycling area.
4. A fish tank, shrimp and crab aquaculture system as in claim 3 wherein 36 cone-shaped dirt collecting funnels are arranged at the bottom of the dirt collecting tank, connected by PVC pipes and connected to a drain well on the shore, the dirt is treated and compressed into a filter cake by mechanical equipment, used as fertilizer, and the water spinach is planted in a manual floating bed placed at the tail end of the dirt collecting tank.
5. A fish tank, shrimp and crab aquaculture system as in claim 3 wherein the shrimp and crab ponds are each provided with aquatic weeds.
6. The fish tank, shrimp, crab water culture system of claim 3 wherein snails are placed in the purified water recycling area and activated carbon and medical stones are stacked on both sides of the overflow dam.
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| CN111387123A (en) * | 2020-03-26 | 2020-07-10 | 中国水产科学研究院渔业机械仪器研究所 | Construction and culture method of grass carp-river crab-snail multi-nutrition-level pond system |
| CN111567449A (en) * | 2020-05-12 | 2020-08-25 | 丁理法 | Relay recirculating aquaculture method for fishes and shellfishes in seawater pond |
| CN112335596B (en) * | 2020-11-03 | 2022-03-18 | 安徽省农业科学院水产研究所 | Pond engineering circulating water zero-discharge culture system |
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