CN113170755A - Factory-like fish recirculating aquaculture system - Google Patents
Factory-like fish recirculating aquaculture system Download PDFInfo
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- CN113170755A CN113170755A CN202110548177.5A CN202110548177A CN113170755A CN 113170755 A CN113170755 A CN 113170755A CN 202110548177 A CN202110548177 A CN 202110548177A CN 113170755 A CN113170755 A CN 113170755A
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- 244000144974 aquaculture Species 0.000 title claims abstract description 57
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- 230000003134 recirculating effect Effects 0.000 title claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 122
- 235000014653 Carica parviflora Nutrition 0.000 claims abstract description 26
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Images
Classifications
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- 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
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- 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
-
- 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
- A01K63/045—Filters for aquaria
Abstract
The invention provides a fish factory circulating water culture system, which comprises: the device comprises a culture pond, a mechanical filter pond, a sedimentation tank, a primary hairbrush pond, a fluidized bed filling pond, a secondary hairbrush pond, a coral pond, an ultraviolet disinfection pond and a water storage pond which are sequentially connected to form a culture wastewater circulating and purifying loop. Naturally collecting solid particle pollutants containing residual baits, excrement and the like generated in the culture pond through a conical collecting tank, a sewage collecting port and a collector at the bottom of the culture pond, and periodically discharging the pollutants out of the system; the combined process treatment is carried out on the aquaculture wastewater through the physical filtering unit, the biological purifying unit and the disinfection and sterilization buffer unit, the treated water can meet the requirement of aquaculture water, the water can be recycled, and the water resource utilization efficiency is improved; the oxygen increasing device in the water storage tank plays a role in reoxygenation. The circulating water culture system can improve the culture efficiency of Gymnocypris przewalskii, is beneficial to the preservation and protection of Gymnocypris przewalskii resources, and promotes the sustainable development of species resources.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to a fish factory circulating water aquaculture system.
Background
The hybrid fishing putatively called a bridal is the only economic fish in the Qinghai lake and occupies an important position in the Qinghai lake ecosystem. Due to the history and natural reasons, the gymnocypris przewalskii resources are greatly damaged once. In order to accelerate the resource recovery of the Gymnocypris przewalskii in Qinghai lakes, the Gymnocypris przewalskii rescue center develops the artificial breeding and cultivation work of Gymnocypris przewalskii resources in recent 20 years, and particularly, the development of Gymnocypris przewalskii cultivation work by establishing an industrial circulating water cultivation system has made great progress in recent years.
The industrial circulating water culture mode of Gymnocypris przewalskii is a system designed according to the nutritional requirements and metabolism of Gymnocypris przewalskii, the pollution characteristics and load of pond water, the requirement of culture varieties on water quality, the mechanism of formation of biofilter and the like, and is an efficient, water-saving and environment-friendly industrial culture technology which integrates multiple subjects of biology, microbial engineering, water treatment equipment, information, computers and the like. The industrial circulating water culture system for Gymnocypris przewalskii mainly comprises a culture pond, a water quality purification system and auxiliary facilities, and the key technology of the system is a water quality purification technology. The method not only improves the utilization rate of the aquaculture water, breaks through the limitation of water sources to the aquaculture industry, but also is greatly helpful for solving the situations of ecological imbalance, environmental deterioration and resource atrophy caused by extensive operation type and resource-dependent type aquatic product production modes in China. Although the industrial circulating water culture mode of Gymnocypris przewalskii is gradually mature, a series of problems of low water resource utilization rate, high culture cost, large equipment investment, high operating cost, complex operation and management and the like generally exist. At present, an industrial culture system for gymnocypris przewalskii with high water resource utilization rate, low investment, low operation cost and convenient operation and management is urgently needed to be constructed so as to sweep the obstacles of industrial circulating water culture, improve the benefits of industrial culture, be more beneficial to preservation and protection of gymnocypris przewalskii germplasm resources and promote the sustainable development of species resources.
Disclosure of Invention
The invention provides a fish industrial recirculating aquaculture system, which is used for solving the defects of low water resource utilization rate and high aquaculture cost of an artificial culture Qinghai lake naked carp industrial recirculating aquaculture system in the prior art.
The invention provides a fish factory circulating water culture system, which comprises: the device comprises a culture pond, a mechanical filter pond, a sedimentation pond, a primary hairbrush pond, a fluidized bed filling pond, a secondary hairbrush pond, a coral pond, an ultraviolet disinfection pond and a water storage pond which are sequentially connected to form a culture wastewater circulating and purifying loop; wherein the content of the first and second substances,
the bottom of the culture pond is provided with a conical collecting tank, the bottom of the conical collecting tank is provided with a sewage collecting port, and the lower end of the sewage collecting port is communicated with a collector;
and an oxygen increasing device is arranged in the water storage tank. According to the fish industrial recirculating aquaculture system provided by the invention, the mechanical filter tank is internally provided with mechanical filter equipment, and the mechanical filter equipment comprises a porous medium aquifer.
According to the fish industrial recirculating aquaculture system provided by the invention, the aquaculture pond is communicated with the mechanical filtering equipment through a water outlet pipeline, and the aquaculture pond is communicated with the water storage pond through a water inlet pipeline.
The fish factory circulating water aquaculture system provided by the invention further comprises a filter screen, wherein the filter screen is arranged at a water outlet in the aquaculture pond of the water outlet pipeline.
According to the fish industrial recirculating aquaculture system provided by the invention, the bottom of the mechanical filtering equipment is provided with a second sewage discharge pipeline for discharging sediments through a back washing system in the mechanical filtering equipment; the upper part of the mechanical filter tank is communicated with the sedimentation tank through a communicating pipeline and is used for guiding upper water in the mechanical filter tank into the sedimentation tank.
According to the fish industrial recirculating aquaculture system provided by the invention, a filter screen groove is arranged at the inlet of the sedimentation tank.
According to the fish factory circulating water aquaculture system provided by the invention, a fluidized bed filling area and a water tank are arranged in the fluidized bed filling pool, the fluidized bed filling area and the water tank are separated and communicated through a plate net, the primary brush pool is communicated with the fluidized bed filling area, and the secondary brush pool is communicated with the water tank.
According to the fish industrial recirculating aquaculture system provided by the invention, filter material corals are arranged in the coral pond.
According to the fish industrial recirculating aquaculture system provided by the invention, the primary hairbrush is arranged in the primary hairbrush tank, and the secondary hairbrush is arranged in the secondary hairbrush tank.
The fish factory circulating water aquaculture system further comprises a switch valve, and the switch valve is arranged at the outlet of the collector.
The fish industrial circulating water culture system provided by the invention is suitable for industrial culture of Gymnocypris przewalskii, natural collection of solid particle pollutants containing residual baits, excrement and the like generated in a culture pond is carried out through the conical collecting tank, the sewage collecting port and the collector at the bottom of the culture pond, and the solid particle pollutants are periodically discharged out of the system. The method not only improves the utilization efficiency of water resources, greatly reduces the supplement of culture water, reduces the culture cost of industrial culture, but also can effectively control the culture environmental conditions, improves the culture efficiency of Gymnocypris przewalskii, is beneficial to the preservation and protection of Gymnocypris przewalskii resources, and plays an important role in the rapid recovery of Gymnocypris przewalskii resources.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fish factory recirculating aquaculture system provided by the invention;
FIG. 2 is a schematic structural diagram of a culture pond provided by the invention;
reference numerals:
1: a culture pond; 2: a sewage collecting port; 3: a first sewerage pipeline;
4: a filter screen; 5: a collector; 6: a water outlet;
7: a water outlet pipeline; 8: a mechanical filter tank; 9: a mechanical filtration device;
10: a second sewerage pipeline; 11: a sedimentation tank; 12: a filter screen groove;
13: a primary brush tank; 14: a primary brush; 15: a fluidized bed packing tank;
16: a water tank; 17: a secondary brush; 18: a second-stage brush tank;
19: coral; 20: a coral pond; 21: an ultraviolet disinfection tank;
22: a water delivery pipeline; 23: a water storage tank; 24: a water inlet pipe;
25: a tapered collection trough; 26: and (4) switching on and off the valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A fish factory recirculating aquaculture system of the present invention is described below with reference to fig. 1 and 2, and comprises: the culture pond 1, the mechanical filter pond 8, the sedimentation tank 11, the primary hairbrush pond 13, the fluidized bed filling pond 15, the secondary hairbrush pond 18, the coral pond 20, the ultraviolet disinfection pond 21 and the water storage pond 23 are sequentially connected to form a culture wastewater circulating and purifying loop.
The fish factory circulating aquaculture system in the embodiment mainly comprises an aquaculture unit, a physical filtering unit, a biological purification unit and a disinfection and sterilization buffer unit. Wherein, the culture unit mainly comprises a culture pond 1, a water inlet pipeline 24, a water outlet pipeline 7 and a first sewage discharge pipeline 3; the physical filtering unit mainly filters through a mechanical filtering tank 8 and precipitates through a sedimentation tank 11; the biological purification unit mainly comprises a primary hairbrush tank 13, a fluidized bed filling tank 15, a secondary hairbrush tank 18 and a coral tank 20; the disinfection and sterilization buffer unit mainly comprises an ultraviolet disinfection tank 21 and a water storage tank 23. The aquaculture wastewater containing solid particle pollutants such as baits, excrements and the like and soluble pollutants generated in the aquaculture pond 1 sequentially passes through the mechanical filter 8, the sedimentation tank 11, the first-stage brush tank 13, the fluidized bed filling tank 15, the second-stage brush tank 18, the coral tank 20, the ultraviolet disinfection tank 21 and the water storage tank 23 for comprehensive treatment, oxygen increasing equipment is arranged in the water storage tank 23 for reoxygenation treatment of circulating water, and the treated aquaculture water flows back to the aquaculture pond 1 through the water inlet pipeline 24.
Wherein, the bottom of breeding pond 1 is equipped with toper collecting vat 25, is equipped with collection dirty mouthful 2 in the bottom of toper collecting vat 25, and collection dirty mouthful 2 lower extreme intercommunication has collector 5. Breed pond 1 and be circular pond, the contained angle of toper collecting vat 25 and horizontal plane is 15, and the large particle pollutants such as incomplete bait, excrement and urine of being convenient for gather naturally and discharge, and collector 5 mainly used collects above-mentioned large particle pollutants such as incomplete bait, excrement and urine. The sewage collecting port 2 is connected with the collector 5 through the first sewage discharging pipeline 3, so that sewage can be naturally collected under the action of gravity.
Furthermore, the angle between the water inlet pipeline 24 of the culture pond 1 and the pond wall is 45 degrees, so that the water in the pond forms effective circulation by the water inlet jet flow, the solid particle pollutants such as residual bait, excrement and the like in the culture pond 1 are naturally gathered, and the solid particle pollutants are discharged to the collector 5 through the sewage collecting port 2 at the bottom of the pond and the first sewage discharge pipeline 3.
Further, the fish industrial recirculating aquaculture system further comprises a switch valve 26, the switch valve 26 is arranged at the outlet of the collector 5, and large-particle pollutants such as residual bait and excrement are discharged out of the system by periodically opening the switch valve 26.
According to the fish factory circulating water aquaculture system provided by the invention, aquaculture wastewater in an aquaculture pond 1 is sequentially introduced into a mechanical filter tank 8 and a sedimentation tank 11 for physical filtration, then sequentially passes through a primary hairbrush tank 13, a fluidized bed filling tank 15, a secondary hairbrush tank 18 and a coral tank 20 for biological purification, finally is comprehensively treated through an ultraviolet disinfection tank 21 and a water storage tank 23, and the treated aquaculture water flows back to the aquaculture pond 1, so that a complete aquaculture wastewater circulating and purifying loop is formed.
The fish industrial circulating water culture system provided by the invention is suitable for industrial culture of Gymnocypris przewalskii, solid particle pollutants containing residual baits, excrement and the like generated in the culture pond 1 are naturally collected through the conical collecting tank 25, the sewage collecting port 2 and the collector 5 at the bottom of the culture pond 1 and are periodically discharged out of the system, the treatment system also carries out combined process treatment on other pollutants in the culture wastewater, and the treated water can meet the requirement of the culture water and is recycled. The method not only improves the utilization efficiency of water resources, greatly reduces the supplement of culture water, reduces the culture cost of industrial culture, but also can effectively control the culture environmental conditions, improves the culture efficiency of Gymnocypris przewalskii, is beneficial to the preservation and protection of Gymnocypris przewalskii resources, and plays an important role in the rapid recovery of Gymnocypris przewalskii resources.
In one embodiment, a mechanical filtering device 9 is arranged in the mechanical filtering tank 8, and the mechanical filtering device 9 comprises a porous medium aquifer. In addition, a second sewage discharge pipeline 10 is arranged at the bottom of the mechanical filter tank 8 and used for discharging sediments through a back washing system in the mechanical filter equipment; the upper part of the mechanical filter tank 8 is communicated with the sedimentation tank 11 through a communication pipeline and is used for guiding the upper water body in the mechanical filter tank 8 into the sedimentation tank 11. The aquaculture wastewater is filtered by the porous medium in the mechanical filter tank 8, then the bottom sediment is discharged through the second sewage discharge pipeline 10, and the upper water body is introduced into the sedimentation tank 11.
In one embodiment, the culture pond 1 is communicated with the mechanical filtering device 9 through the water outlet pipe 7, and the culture pond 1 is communicated with the water storage tank 23 through the water inlet pipe 24. Furthermore, the fish industrial recirculating aquaculture system also comprises a filter screen 4, wherein the filter screen 4 is arranged at a water outlet 6 of the water outlet pipeline 7 in the culture pond 1 and is used for stopping large-particle pollutants from entering along with water flow.
In one embodiment, a filter screen groove 12 is arranged at the inlet of the sedimentation tank 11, so that solid suspended matters in water can be effectively blocked.
In one embodiment, a fluidized bed filling area and a water tank 16 are arranged in the fluidized bed filling tank 15, the fluidized bed filling area is separated from and communicated with the water tank 16 through a plate mesh, the primary brush tank 13 is communicated with the fluidized bed filling area, and the secondary brush tank 18 is communicated with the water tank 16. In addition, a first-stage brush 14 is arranged in the first-stage brush pool 13, and a second-stage brush 17 is arranged in the second-stage brush pool 18. In one-level brush pond 13, adopt the suspended particle pollutant of one-level brush 14 separation breed 1 behind the physics filter unit processing, make its adhesion on one-level brush 14 surface, later let in fluidized bed filler pond 15, the fluidized bed filler in fluidized bed filler district has powerful pollutant removal ability, its specific surface is big, suitable growing environment is provided for the microorganism breeds in a large number, abundant microorganism makes the pollutant in aquatic decompose fast, breed waste water through 16 entering second grade brush ponds 18 of basin, mainly play the biological biofilm formation, subduct the solubility pollutant, thereby reach the effect of purifying water quality.
In one embodiment, a filter coral 19 is disposed within the coral pool 20. The coral 19 has the effect of continuously releasing calcium carbonate, the coral 19 contains alkaline substances, and the coral 19 can maintain the pH value of water at 7.0-8.5 when water flows through the filter material coral 19, because the coral 19 can continuously release calcium ions and magnesium ions to provide high hardness and stable pH value for the water quality of fish culture.
In one embodiment, the ultraviolet disinfection tank 21 is provided with an ultraviolet lamp, and the ultraviolet lamp kills pathogenic bacteria, removes peculiar smell and reduces chroma. The culture wastewater treated by the coral pond 20 is sent to an ultraviolet disinfection pond 21 for treatment, and then sent to a water storage pond 23 through a water pipe 22.
The treatment method of the fish factory circulating aquaculture system based on the embodiment comprises the following steps:
the large-particle pollutants such as residual bait and excrement and the like generated in the culture pond 1 are naturally gathered near the sewage collecting port 2 under the action of the water flow dynamic force of the culture pond 1, then are sunk into the collector 5 through the first sewage discharge pipeline 3 under the action of gravity, and the switch valve 26 is periodically opened to discharge the large-particle pollutants such as the residual bait and the excrement and the like out of the system. The aquaculture wastewater enters the water outlet pipeline 7 through the water outlet 6 with the filter screen 4, and the filter screen 4 plays a role in filtering large-particle pollutants in aquaculture water. The breeding wastewater enters a mechanical filtering tank 8 through a water outlet pipeline 7, is filtered by a mechanical filtering device 9 and then enters a sedimentation tank 11. The sedimentation tank 11 is provided with a filter screen groove 12, solid-liquid separation can be effectively carried out, the breeding wastewater then enters a first-level brush tank 13, suspended particle pollutants still remained in the water after being filtered by a physical filtering unit through a first-level brush 14 are separated from the breeding tank 1, the suspended particle pollutants are made to adhere to the surface of the first-level brush 14 and then enter a fluidized bed filling tank 15, a fluidized bed filling area and a water tank 16 are arranged in the fluidized bed filling tank 15, the fluidized bed filling area and the water tank 16 are separated and communicated by using a plate net, fluidized bed filling in the fluidized bed filling area has strong pollutant removing capacity, the specific surface area of the fluidized bed filling area is large, a proper growing environment is provided for mass propagation of microorganisms, and abundant microorganisms enable the pollutants in the water to be rapidly decomposed. Then the aquaculture wastewater enters a secondary brush pool 18 through a water tank 16, and mainly plays a role in biofilm formation and reduction of soluble pollutants, so that the water quality is purified. Purified water enters a coral pool 20, coral 19 in the pool has the effect of continuously releasing calcium carbonate, the coral 19 contains alkaline substances, and water flow passing through the filter material coral 19 can keep the pH value in water at 7.0-8.5 generally, because the water continuously releases calcium ions and magnesium ions, higher hardness and stable pH value are provided for the water quality of fish culture. The water from the coral pool 20 enters an ultraviolet disinfection pool 21 for disinfection treatment, and pathogenic bacteria are killed by ultraviolet rays, peculiar smell is removed, and chromaticity is reduced. And finally, the water enters a water storage tank 23 through a water conveying pipeline 22, the water stays in the water storage tank 23 for a period of time, the water flows back to the culture tank 1 through a water inlet pipeline 24 after being subjected to buffering treatment, and an oxygen increasing device is arranged in the water storage tank 23 to play a role of reoxygenation so as to ensure that the water entering the culture tank 1 has enough dissolved oxygen content. The system purifies water, saves water resources, reduces the culture cost of industrial culture, improves the culture efficiency of Gymnocypris przewalskii, and has remarkable ecological and economic benefits.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A fish industrial recirculating aquaculture system, comprising: the device comprises a culture pond, a mechanical filter pond, a sedimentation pond, a primary hairbrush pond, a fluidized bed filling pond, a secondary hairbrush pond, a coral pond, an ultraviolet disinfection pond and a water storage pond which are sequentially connected to form a culture wastewater circulating and purifying loop; wherein the content of the first and second substances,
the bottom of the culture pond is provided with a conical collecting tank, the bottom of the conical collecting tank is provided with a sewage collecting port, and the lower end of the sewage collecting port is communicated with a collector;
and an oxygen increasing device is arranged in the water storage tank.
2. The fish industrial recirculating aquaculture system of claim 1, wherein said mechanical filter tank is provided with a mechanical filter device, said mechanical filter device comprising a porous medium aquifer.
3. The fish industrial recirculating aquaculture system of claim 2, wherein said aquaculture tank is in communication with said mechanical filtration device via an outlet conduit and said aquaculture tank is in communication with said storage tank via an inlet conduit.
4. The fish industrial recirculating aquaculture system of claim 3, further comprising a filter screen disposed at a water outlet of said water outlet pipe in said aquaculture pond.
5. The fish factory circulating aquaculture system of claim 2, wherein a second sewage drain is provided at the bottom of the mechanical filter device for discharging the sediment through a back flush system in the mechanical filter device; the upper part of the mechanical filter tank is communicated with the sedimentation tank through a communicating pipeline and is used for guiding upper water in the mechanical filter tank into the sedimentation tank.
6. The fish industrial recirculating aquaculture system of claim 1, wherein a filter screen tank is provided at an inlet of said sedimentation tank.
7. The fish industrial recirculating aquaculture system of claim 1, wherein a fluidized bed packing area and a water tank are arranged in the fluidized bed packing pool, the fluidized bed packing area is separated from and communicated with the water tank through a plate net, the primary brush pool is communicated with the fluidized bed packing area, and the secondary brush pool is communicated with the water tank.
8. The fish industrial recirculating aquaculture system of claim 1, wherein filter coral is disposed in the coral pond.
9. The fish industrial recirculating aquaculture system of claim 1, wherein the primary brush tank is internally provided with primary brushes, and the secondary brush tank is internally provided with secondary brushes.
10. The fish industrial recirculating aquaculture system of any one of claims 1-9, further comprising a switch valve, said switch valve being provided at the outlet of said collector.
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| CN202110548177.5A CN113170755A (en) | 2021-05-19 | 2021-05-19 | Factory-like fish recirculating aquaculture system |
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| CN202110548177.5A CN113170755A (en) | 2021-05-19 | 2021-05-19 | Factory-like fish recirculating aquaculture system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113749036A (en) * | 2021-09-28 | 2021-12-07 | 长春市水产品质量安全检测中心(长春市水产研究院、长春市水产技术推广站、长春市源水水质检测中心) | Bionic pond and method for breeding northeast crawfish |
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