CN211631400U - Circular-pot bottom water pool for circular cultivation - Google Patents
Circular-pot bottom water pool for circular cultivation Download PDFInfo
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- CN211631400U CN211631400U CN201922379669.7U CN201922379669U CN211631400U CN 211631400 U CN211631400 U CN 211631400U CN 201922379669 U CN201922379669 U CN 201922379669U CN 211631400 U CN211631400 U CN 211631400U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 59
- 239000010865 sewage Substances 0.000 claims abstract description 48
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 238000009395 breeding Methods 0.000 abstract description 8
- 230000001488 breeding effect Effects 0.000 abstract description 8
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- 238000009360 aquaculture Methods 0.000 description 9
- 244000144974 aquaculture Species 0.000 description 9
- 239000000047 product Substances 0.000 description 8
- 238000000746 purification Methods 0.000 description 7
- 239000010409 thin film Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
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- 241000209134 Arundinaria Species 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 241000937995 Ictalurus furcatus Species 0.000 description 1
- 240000008436 Ipomoea aquatica Species 0.000 description 1
- 235000019004 Ipomoea aquatica Nutrition 0.000 description 1
- 241001125889 Micropterus salmoides Species 0.000 description 1
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Abstract
A circular-bottom water pool for circular breeding comprises a pool wall, wherein the pool wall is cylindrical, a circular-bottom pool bottom is arranged at the bottom of the pool wall, a sewage collecting barrel is arranged at the middle bottom of the circular-bottom pool bottom, a strainer is arranged on the sewage collecting barrel, and a sewage discharge pipe is communicated with the lower part of the sewage collecting barrel; a water inlet is arranged on the tank wall; two sides in the pool wall are respectively provided with an oxygenation water pusher, and the two oxygenation water pushers push water clockwise or anticlockwise along the pool wall; the oxygenation water pusher comprises a square frame, a guide baffle and a nanometer oxygenation plate; the nanometer oxygenation plate is connected with an air pipe for blowing air for the nanometer oxygenation plate; the nanometer oxygenation plate is arranged at the bottom of the square frame; the rear end of the guide baffle is connected with the bottom of the rear side of the square frame, and the front end of the guide baffle extends to the upper part of the front side of the square frame; the two sides of the guide baffle are respectively provided with a side baffle which encloses the left side and the right side of the square frame. The pool occupies less land resources and is beneficial to the concentrated discharge of the feces of the cultured aquatic animals.
Description
Technical Field
The utility model relates to the technical field of aquaculture, in particular to a round pot bottom water pool capable of being used for circulating aquaculture.
Background
With the increasing world population, water resources can quickly become a factor for limiting a plurality of industries, the nutrition cost required by food production is further increased, the demand of southeast Asia countries on high-quality water products is greatly increased, the current situation of the fishing industry is kept or the fishing industry is in a descending trend, and the cultured aquatic products occupy the main market. Meanwhile, the water cost of agriculture, especially aquaculture industry, is increased, and the environmental pressure is increased. The biggest challenge in the 21 st century agricultural production is to produce more than 3 times the product using less resources. World bank global fishery program-2030 fishery project preliminary: the world aquaculture amount must be increased by 100% in 10-15 years in future to meet the increasing demand of people on aquatic products.
Pond culture, reservoir culture and riverway cage culture are always traditional aquaculture modes in China, but the cage culture is generally suitable for wide water areas of riverway surfaces, and the yield of the pond culture per unit area is much lower than that of the cage culture. In recent years, due to the pressure of national ecological environment protection, the current river reservoir net cages completely forbid the cultivation and advocate the green, environment-friendly and intensive cultivation. Pond culture also conforms to the aquaculture mode of being the main farming, and people adopt the circulating water culture technology in the pond in order to improve the culture yield. The circulating flow water culture technology in the pond integrates the circulating flow water fish culture technology and the common pond fish culture technology, changes the open free-range culture of the traditional pond into the intensive captive culture, and realizes the running water fish culture of the 'still water' pond. Through the several (install the aeration equipment and push away water and make the flow, waste such as incomplete bait fish excrement is installed to the dirt suction equipment extraction that one end was pushed away to the breed basin of two rivers intercommunications of building on one side of the pond, form annular rivers in whole big pond, can concentrate to feed fish in "runway" basin, can utilize rivers to concentrate an inslot unified processing again with the excrement.
Researches show that the circulating water in the pond has three main disadvantages: firstly, the daily operating cost is high, the fish culture in the pond by the circulating water mainly depends on the continuous operation of high-power water pushing and oxygen increasing equipment to provide sufficient oxygen for the fish cultured in the high density in the water tank and manufacture pond annular water flow, the daily power consumption is large, and the operating cost is high; circulating water aquaculture mechanical equipment in the pond is more, and the exchange of wading of water fragile needs regular maintenance, especially need well supporting emergent power generation system and reserve oxygen equipments in order to prevent unexpected outage stall, and this has undoubtedly increased the manpower and materials cost of operation. Secondly, the sewage absorption effect of the water channel of the runway is poor, although one section of the water channel for circulating water cultivation in the pond is provided with a waste precipitation area such as residual bait fish dung and the like, and equipment is used for absorbing sewage, the residual bait fish dung in the water flows along with water body and is usually in a suspension state, the equipment can only extract a small part of sewage in the water, and if the fish body is killed, the sewage absorption pipeline of the equipment is likely to be blocked. Thirdly, the occupied water surface area is large, the area of circulating water culture in the pond is generally not more than 20 percent of the total area of the pond, the water surfaces of other ponds need to be matched with water purifying plants for planting water purification plants to treat culture water quality, otherwise, the requirement of fish culture water bodies in the pond runway cannot be met.
However, the traditional pond culture also faces the requirements of more difficult land property, strict standard discharge of tail water and the like, the culture yield promotion space is smaller, and the further development of the aquaculture industry in China is restricted to a certain extent. Therefore, the water pond for land-based aquatic product circulating culture, which occupies a small water area, saves resources, is convenient and labor-saving, is needed to be purposefully invented according to the development requirements of the times, so that the shortage of aquatic product supply caused by forbidden culture of net cages in the water area is made up, and the ever-increasing consumption requirements of green and healthy aquatic products of people are met.
Disclosure of Invention
The utility model aims at providing a circle pot bottom pond of circulation breed, the land resource that this pond occupy is few, and does benefit to the dirty concentrated emission of aquatic livestock's excrement of breed, is convenient for realize breeding the purpose that the high yield of environmental protection and economic ecological benefit are obvious.
In order to realize the purpose, the utility model discloses a technical scheme be:
a circular-bottom water pool for circular breeding comprises a pool wall, wherein the pool wall is cylindrical, a circular-bottom pool bottom is arranged at the bottom of the pool wall, a sewage collection barrel is arranged at the middle bottom of the circular-bottom pool bottom, a strainer is arranged at the top of the sewage collection barrel, and a sewage discharge pipe is communicated with the lower part of the sewage collection barrel; a water inlet is arranged on the tank wall; two sides in the pool wall are respectively provided with an oxygenation water pusher, and the two oxygenation water pushers push water clockwise or anticlockwise along the pool wall.
The pool wall can be conveniently transported and installed by splicing an arc-shaped galvanized corrugated plate with the thickness of 1.2mm, the length of 2.44m and the height of 1.2m into a circular frame on a flat mud ground by using rivets, a circular frame with the diameter of 6m, 8m and 12m can be made as required, then a circular pot bottom-shaped pool bottom is dug on the ground, the circular frame is arranged on the circular pot bottom-shaped pool bottom, a sewage collection barrel for draining water is arranged, a cylindrical knife scraping cloth sleeve is sleeved in the pool wall to prevent water leakage, and a circular pot bottom water pool for circulating culture can be obtained by arranging a leakage sieve and a sealing ring for preventing water leakage on the sewage collection barrel.
The oxygenation water pusher comprises a square frame, a guide baffle and a nanometer oxygenation plate, and the height of the square frame is consistent with that of the pool wall; the nanometer oxygenation plate is connected with an air pipe for blowing air for the nanometer oxygenation plate; the nanometer oxygenation plate is arranged at the bottom of the square frame; the rear end of the guide baffle is connected with the bottom of the rear side of the square frame, and the front end of the guide baffle extends to the upper part of the front side of the square frame; the two sides of the guide baffle are respectively provided with a side baffle which encloses the left side and the right side of the square frame. The bubbles blown out from the nanometer oxygenation plate form forward thrust under the guiding action of the guide baffle.
The sewage discharge pipe is L-shaped, and the water level of the round pot bottom water tank is adjusted by adjusting the height of the water outlet position of the L-shaped sewage discharge pipe.
The front portion of square frame type frame install the depression bar, the both ends of depression bar span respectively through the screw thread adjusting lever and install the front portion at square frame type frame, adjust the depression bar to suitable height through the length of adjusting the screw thread adjusting lever to press the front end of direction baffle to suitable position, the bubble of being convenient for forms thrust at the surface of water.
One side of the square frame is provided with a buckle, so that the oxygenation water pusher is conveniently arranged on the wall of the water pool at the bottom of the round pot.
This circular pan bottom pond of breeding circulates advantage that has:
1. the pool wall of the circular-pot-bottom water pool for the circulating culture is cylindrical, the pool bottom is a circular-pot-bottom pool bottom, a sewage collection barrel is arranged at the middle bottom of the circular-pot-bottom pool bottom, a screen is arranged at the top of the sewage collection barrel, and the lower part of the sewage collection barrel is communicated with a sewage discharge pipe; a water inlet is arranged on the tank wall; two sides in the pool wall are respectively provided with an oxygenation water pusher, and the two oxygenation water pushers push water clockwise or anticlockwise along the pool wall; the water can form vortex flow in the pool, the feces of the cultured aquatic animals can be rapidly settled at the bottom of the round-bottom-shaped pool, and is discharged into the feces collecting barrel from the sieve at the bottom of the round-bottom-shaped pool and then is discharged from the blow-off pipe; the discharged sewage can be conveyed into the water tank at the bottom of the round pot from the water inlet again after being filtered, precipitated and purified, so that the circular culture is realized.
2. The round pot bottom water pool of the system can be assembled by shaping accessories, has the characteristics of free disassembly and assembly, light and flexible property, low price and the like, can be flexibly disassembled, assembled and transported for use according to actual production needs, is suitable for different landforms and landforms, and facilitates the development of aquaculture activities according to local conditions.
Drawings
FIG. 1 is a schematic structural view of a round-bottom water pool for the circulation cultivation;
FIG. 2 is a schematic structural view of the oxygen-increasing water pusher in FIG. 1;
the names of the sequence numbers in the figure are:
1. the device comprises a pool wall, 2 an oxygenation water pusher, 3 a knife cloth scraping sleeve, 4 a water inlet, 5 a round pot bottom-shaped pool bottom, 6 a strainer, 7 a dirt collecting barrel, 8 a sewage discharge pipe, 9 a square frame, 10 a pressure lever, 11 a thread adjusting rod, 12 a guide baffle, 13 a side baffle, 14 a nano oxygenation disc, 15 a gas pipe, 16 and a plug buckle.
Detailed Description
For a more detailed description of the present invention, the following description is given with reference to the accompanying drawings.
Example 1
A circular-bottom water pool for circular breeding comprises a pool wall 1, wherein the pool wall 1 is cylindrical, a circular-bottom pool bottom 5 is arranged at the bottom of the pool wall 1, a sewage collection barrel 7 is arranged at the middle bottom of the circular-bottom pool bottom 5, a leakage sieve 6 is arranged at the top of the sewage collection barrel 7, and the lower part of the sewage collection barrel 7 is communicated with a sewage discharge pipe 8; the tank wall 1 is provided with a water inlet 4; two sides in the pool wall 1 are respectively provided with an oxygenation water pusher 2, and the two oxygenation water pushers 2 push water clockwise or anticlockwise along the pool wall 1.
The oxygenation water pusher 2 comprises a square frame 9, a guide baffle 12 and a nanometer oxygenation disc 14, and the height of the square frame 9 is consistent with that of the pool wall 1; the nanometer oxygenation disc 15 is connected with an air pipe 15 for blowing air for the nanometer oxygenation disc 14; the nanometer oxygenation plate 14 is arranged at the bottom of the square frame 9; the rear end of the guide baffle 12 is connected with the bottom of the rear side of the square frame 9, and the front end of the guide baffle 12 extends to the upper part of the front side of the square frame 9; side baffles 13 are respectively arranged at two sides of the guide baffle 12, and the side baffles 13 enclose and baffle the left side and the right side of the square frame 9. The bubbles blown out from the nanometer oxygenation disc 15 form forward thrust under the guiding action of the guide baffle plate 12.
Example 2
A circular-bottom water pool for circular breeding comprises a pool wall 1, wherein the pool wall 1 is cylindrical, a circular-bottom pool bottom 5 is arranged at the bottom of the pool wall 1, a sewage collection barrel 7 is arranged at the middle bottom of the circular-bottom pool bottom 5, a leakage sieve 6 is arranged at the top of the sewage collection barrel 7, and the lower part of the sewage collection barrel 7 is communicated with a discharge pipe 8 which is similar to an L shape; the water level of the round pot bottom water tank is adjusted by adjusting the height of the water outlet position of the L-shaped sewage discharge pipe 8. The tank wall 1 is provided with a water inlet 4; two sides in the pool wall 1 are respectively provided with an oxygenation water pusher 2, and the two oxygenation water pushers 2 push water clockwise or anticlockwise along the pool wall.
The oxygenation water pusher 2 comprises a square frame 9, a guide baffle 12 and a nanometer oxygenation disc 14, and the height of the square frame 9 is consistent with that of the pool wall 1; the nanometer oxygenation disc 15 is connected with an air pipe 15 for blowing air for the nanometer oxygenation disc 14; the nanometer oxygenation plate 14 is arranged at the bottom of the square frame 9; the rear end of the guide baffle 12 is connected with the bottom of the rear side of the square frame 9, and the front end of the guide baffle 12 extends to the upper part of the front side of the square frame 9; side baffles 13 are respectively arranged at two sides of the guide baffle 12, and the side baffles 13 enclose and baffle the left side and the right side of the square frame 9. The bubbles blown out from the nanometer oxygenation disc 15 form forward thrust under the guiding action of the guide baffle plate 12.
The front part of the square frame 9 is provided with a pressure lever 10, two ends of the pressure lever 10 respectively cross the front part of the square frame 9 through a thread adjusting rod 11, the pressure lever 10 is adjusted to a proper height by adjusting the length of the thread adjusting rod 11, so that the front end of the guide baffle 12 is pressed to a proper position, and bubbles can form thrust on the water surface conveniently.
One side of the square frame 9 is provided with a buckle 16, which is convenient for installing the oxygenation water pusher on the wall 1 of the water pool at the bottom of the round pan.
Example 3
The utility model provides a circular pan bottom pond of circulation breed, including pool wall 1, pool wall 1 is by the arc galvanized corrugated sheet of 1.2mm thick 2.44m length 1.2 height use the rivet splice into circular frame on leveling the mud ground, can do 6m as required, 8m, the circle frame of 12m diameter, then dig into circular pan bottom form bottom of the pool 5 subaerial, put circular frame on circular pan bottom form bottom of the pool 5 to settle collection dirt bucket 7 that is used for the drainage, then it scrapes cloth cover 3 and prevents to leak to customize columniform sword in pool wall 1 endotheca, it can to set up hourglass sieve 6 and the sealing washer that prevents to leak water on collection dirt bucket 7. The lower part of the sewage collecting barrel 7 is communicated with a sewage discharge pipe 8; the tank wall 1 is provided with a water inlet 4; two sides in the pool wall 1 are respectively provided with an oxygenation water pusher 2, and the two oxygenation water pushers 2 push water clockwise or anticlockwise along the pool wall.
The oxygenation water pusher 2 comprises a square frame 9, a guide baffle 12 and a nanometer oxygenation disc 14, and the height of the square frame 9 is consistent with that of the pool wall 1; the nanometer oxygenation disc 15 is connected with an air pipe 15 for blowing air for the nanometer oxygenation disc 14; the nanometer oxygenation plate 14 is arranged at the bottom of the square frame 9; the rear end of the guide baffle 12 is connected with the bottom of the rear side of the square frame 9, and the front end of the guide baffle 12 extends to the upper part of the front side of the square frame 9; side baffles 13 are respectively arranged at two sides of the guide baffle 12, and the side baffles 13 enclose and baffle the left side and the right side of the square frame 9. The bubbles blown out from the nanometer oxygenation disc 15 form forward thrust under the guiding action of the guide baffle plate 12.
The sewage discharge pipe 8 is L-shaped, and the water level of the round pot bottom water tank is adjusted by adjusting the height of the water outlet position of the L-shaped sewage discharge pipe 8.
The front part of the square frame 9 is provided with a pressure lever 10, two ends of the pressure lever 10 respectively cross the front part of the square frame 9 through a thread adjusting rod 11, the pressure lever 10 is adjusted to a proper height by adjusting the length of the thread adjusting rod 11, so that the front end of the guide baffle 12 is pressed to a proper position, and bubbles can form thrust on the water surface conveniently.
One side of the square frame 9 is provided with a buckle 16, which is convenient for installing the oxygenation water pusher on the wall 1 of the water pool at the bottom of the round pan.
Application examples
The circular-bottom water pool for the circular culture is started in Guangxi guest city, and 4 groups of 52 water pools with the diameters of 5m, 8m, 10m and 12m and the heights of 1.2m, 4 sedimentation treatment pools (15 square meters/pool), 3 purification ponds (4 mu/pool) and 1 water storage tower (24 m for transportation) are built: utilize the retaining tower discrepancy in elevation to constantly intake through water supply pipe, utilize roots blower to connect the oxygenation pipeline (the circuit is unanimous with water supply pipe) simultaneously and supply to two oxygenation water pushers air in the pond to form dense bubble to pond water oxygenation and push away water and form clockwise circulation, promote the sewage disposal system that the aquatic livestock raising excrement and sewage in the pond concentrated in the bottom of the pool, arrange the sewage disposal well, sediment well to four diagonal angles together with the sedimentation treatment pond through blow off pipe (control the water level simultaneously). A 60-degree precipitation inclined pipe in the primary and secondary precipitation treatment tanks precipitates part of large-particle suspended matters in the sewage at the bottom of the inclined pipe and falls to the bottom of the prismatic tank; and thirdly, a bacillus microbial preparation is added into the biological hairbrush in the four-stage sedimentation treatment tank, small-particle suspended matters in sewage can be adsorbed and treated, and metabolic products form flocculent sediments and fall on the bottom of the prismatic tank. And the sewage pipes at the bottoms of the prismatic tanks discharge the precipitated sewage in the four precipitation treatment tanks to a micro-filter for dry-wet separation through water flow, and the filtered water flow is discharged to a third-stage purification pond. And the water flow passing through the upper part of the four-stage sedimentation treatment tank and the pipe is discharged to the third-stage purification pond. An oxygen increasing nano disc is arranged in a water inlet area of the first-stage purification pond to increase oxygen and further treat organic chemical substances in water discharged by the four-stage sedimentation treatment pond, and aquatic plants such as cane shoots, lotus roots and the like are planted to purify the water; the second and third purification ponds further purify the water quality by planting biological floating beds such as water spinach and the like and breeding filter fishes such as silver carp and bighead carp and the like. And a filtering fence is arranged in the third-stage purification pond, after harmful organisms and sundries are filtered, clean water is pumped to the top of the water storage tower by using a water pump, water flow forms water drops through a three-layer porous stainless steel sieve, air is continuously blown into the water storage tower through an air inlet for oxygenation, the water drops fall into the bottom of the water storage tower and are further oxygenated by a nano oxygenation disc and sterilized and disinfected by an underwater ultraviolet lamp, and then the water drops enter each combined round pot bottom water pool through a water supply pipeline.
The current breeding varieties of the system comprise micropterus salmoides, pseudobagrus fulvidraco, Ictalurus furcatus and the like, the specifications of single variety seedlings put into each pool are about 10 g/tail, the densities of the single variety seedlings are respectively 60/m water for thin film cultivation, 50/m water for thin film cultivation and 50/m water for thin film cultivation, the average yield respectively reaches 30kg/m water for thin film cultivation, 30kg/m water for thin film cultivation and 35kg/m water for thin film cultivation through 3 cultivation for multiple months, and the average specifications respectively exceed 500 g/tail, 100 g/tail and 750 g/tail.
The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should be able to make changes, modifications, additions or substitutions within the scope of the present invention.
Claims (4)
1. The utility model provides a circular pot bottom pond of circulation breed, includes pool wall (1), its characterized in that: the sewage treatment device is characterized in that the tank wall (1) is cylindrical, a round pot bottom-shaped tank bottom (5) is arranged at the bottom of the tank wall (1), a sewage collection barrel (7) is arranged at the middle bottom of the round pot bottom-shaped tank bottom (5), a screen (6) is arranged at the top of the sewage collection barrel (7), and the lower part of the sewage collection barrel (7) is communicated with a sewage discharge pipe (8); a water inlet (4) is arranged on the tank wall (1); the two sides in the pool wall (1) are respectively provided with an oxygenation water pusher (2), and the two oxygenation water pushers (2) push water clockwise or anticlockwise along the pool wall;
the oxygenation water pusher (2) comprises a square frame (9), a guide baffle plate (12) and a nanometer oxygenation disc (14), wherein the nanometer oxygenation disc (14) is connected with an air pipe (15) for blowing air for the nanometer oxygenation disc (14); the nanometer oxygenation plate (14) is arranged at the bottom of the square frame (9); the rear end of the guide baffle (12) is connected with the bottom of the rear side of the square frame (9), and the front end of the guide baffle (12) extends to the upper part of the front side of the square frame (9); side baffles (13) are respectively arranged on two sides of the guide baffle (12), and the left side and the right side of the square frame (9) are surrounded and blocked by the side baffles (13).
2. The circularly cultivated round-bottom water pool according to claim 1, wherein: the sewage discharge pipe (8) is L-shaped, and the water level of the round pot bottom water tank is adjusted by adjusting the height of the water outlet position of the L-shaped sewage discharge pipe (8).
3. The circularly cultivated round-bottom water pool according to claim 1, wherein: the front part of the square frame (9) is provided with a pressure lever (10), two ends of the pressure lever (10) respectively cross the front part of the square frame (9) through a thread adjusting rod (11), and the pressure lever (10) is adjusted to a proper height by adjusting the length of the thread adjusting rod (11), so that the front end of the guide baffle (12) is pressed to a proper position.
4. The circularly cultivated round-bottom water pool according to claim 1, wherein: one side of the square frame (9) is provided with a buckle (16) which is convenient for installing the oxygenation water pusher on the wall (1) of the water pool at the bottom of the round pan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922379669.7U CN211631400U (en) | 2019-12-26 | 2019-12-26 | Circular-pot bottom water pool for circular cultivation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922379669.7U CN211631400U (en) | 2019-12-26 | 2019-12-26 | Circular-pot bottom water pool for circular cultivation |
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| Publication Number | Publication Date |
|---|---|
| CN211631400U true CN211631400U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922379669.7U Expired - Fee Related CN211631400U (en) | 2019-12-26 | 2019-12-26 | Circular-pot bottom water pool for circular cultivation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114081001A (en) * | 2021-11-25 | 2022-02-25 | 浙江省淡水水产研究所 | Method and detachable device suitable for brook fish culture |
-
2019
- 2019-12-26 CN CN201922379669.7U patent/CN211631400U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114081001A (en) * | 2021-11-25 | 2022-02-25 | 浙江省淡水水产研究所 | Method and detachable device suitable for brook fish culture |
| CN114081001B (en) * | 2021-11-25 | 2024-04-09 | 浙江省淡水水产研究所 | Method and detachable device suitable for breeding brook fish |
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