CN110074038B - A seedling field that is used for northern area carp family fish seedling production - Google Patents
A seedling field that is used for northern area carp family fish seedling production Download PDFInfo
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- CN110074038B CN110074038B CN201910445043.3A CN201910445043A CN110074038B CN 110074038 B CN110074038 B CN 110074038B CN 201910445043 A CN201910445043 A CN 201910445043A CN 110074038 B CN110074038 B CN 110074038B
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 83
- 241000252233 Cyprinus carpio Species 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000000746 purification Methods 0.000 claims abstract description 39
- 238000003860 storage Methods 0.000 claims abstract description 18
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000009395 breeding Methods 0.000 claims description 23
- 230000001488 breeding effect Effects 0.000 claims description 23
- 230000012447 hatching Effects 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000011218 seed culture Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 201000010099 disease Diseases 0.000 abstract description 19
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 19
- 244000052769 pathogen Species 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- 238000012851 eutrophication Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 9
- 239000013505 freshwater Substances 0.000 description 5
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000252210 Cyprinidae Species 0.000 description 4
- 240000003826 Eichhornia crassipes Species 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 4
- 238000009360 aquaculture Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 244000144974 aquaculture Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
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- 235000013311 vegetables Nutrition 0.000 description 3
- 244000205574 Acorus calamus Species 0.000 description 2
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- 241000252234 Hypophthalmichthys nobilis Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
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- 238000011534 incubation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
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- 235000006440 Pistia stratiotes Nutrition 0.000 description 1
- 241000276707 Tilapia Species 0.000 description 1
- 240000001085 Trapa natans Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
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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
- A01G31/02—Special apparatus therefor
-
- 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
- A01K61/13—Prevention or treatment of fish diseases
-
- 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
- A01K63/003—Aquaria; Terraria
-
- 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
-
- 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
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
-
- 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 relates to a fingerling field for producing fingerlings of carp family fish in northern areas, wherein a parent fish pond, a backup parent fish pond and a fingerling pond are all connected to a first deep well through culverts; the parent fish pond, the backup parent fish pond and the fingerling pond are all connected to a drainage canal through drain pipes, the drainage canal is connected to a purification wetland, the purification wetland is connected to a purification pond, the purification pond is connected to a water storage pond, and a water filtering dam is arranged between the purification pond and the water storage pond; the impounding reservoir is connected to the second deep well, and the impounding reservoir is connected to the quarantine pond, the culture pond, the seedling raising pond and the disinfection pond respectively through culverts, and the quarantine pond, the culture pond, the seedling raising pond and the disinfection pond are all connected to the tail water pond, and the tail water pond is connected to the purification wetland. The invention has scientific and reasonable design, can reduce the external pollution discharge of the eutrophication substances in the tail water of the cultivation to pollute the external environment, and can avoid the risk of using an external water source to carry epidemic disease pathogens; meanwhile, aquatic product and aquatic plant cultivation can be carried out, the cultivation tail water is purified, and the utilization rate is improved.
Description
Technical Field
The invention belongs to the technical field of aquaculture, relates to a fish fingerling field, and particularly relates to a fingerling field for producing carp fingerlings in northern areas.
Background
Cyprinidae, belonging to the order Cyprinidae, is more than 3700 kinds of fishes 210 belonging to the family Cyprinidae worldwide. When the carp fish arrives at the spawning period, marital color appears, the male and female fish swim side by side, and the female fish spawns on attachments such as aquatic weeds, namely fish nests. The fertilized eggs hatch the larval fish within about 1-2 days, the larval fish still clings to the fish nest, the in-vivo yolk sac supplies nutrition, and after 2-3 days, the larval fish starts swimming and foraging after consuming the nutrition of the yolk sac. The temperature adaptability of the carp family fish is strong, and the survival water temperature is 0-30 ℃. The feed is edible, fast in growth, low-oxygen resistant, easy to domesticate and easy to capture, and is suitable for water area cultivation such as freshwater ponds, reservoirs, lakes, river channels, low-lying saline-alkali lands and the like.
With the development of aquaculture industry, disease problems, especially significant viral epidemic diseases, have become the most serious threat to freshwater aquaculture production. The circulation of the seedlings with diseases becomes a main mode of epidemic disease transmission, and the epidemic disease transmission is necessarily controlled from the production source of the seedlings, so that the risk of breeding epidemic disease is reduced. In addition, along with the perfection of the national fishery official veterinary teams and the comprehensive implementation of the quarantine and supervision law enforcement of the aquatic fingerlings production places, the aquatic fingerlings are forced to strengthen epidemic disease risk control, and the seedlings without specific epidemic diseases are produced. The aquatic offspring seed production enterprises are required to continuously promote the construction of software and hardware capabilities such as self epidemic prevention infrastructure, biological security management and the like, and finally healthy offspring seed which does not carry specified epidemic disease pathogens is produced.
The carp fish belongs to the temperature-variable animals, has a period of incubation period after being infected by a pathogen, particularly virus, and does not show clinical symptoms even if the virus is infected in non-pathogenic seasons or water temperature. This often results in the transmission of some serious viral pathogens with the circulation of the offspring, resulting in the occurrence of epidemic diseases during cultivation, causing serious economic losses to the farmers. The aquiculture types and the culture modes are more, and no mature freshwater cultured fish has no specified epidemic disease seedling field construction mode at present.
Therefore, there is a need for a fingerling field for production of fish fingerlings of the cyprinid family to solve the problem of no basic hardware facilities for production of specific epidemic fingerlings at present.
The same published patent document as the present patent application is not found by searching the published patent document.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a fingerling field for producing fingerlings of carp in the northern area, which can reduce disease risk from the source and ensure the normal operation of fingerling production; meanwhile, aquatic product and aquatic plant cultivation can be carried out, the cultivation tail water is purified, and the utilization rate is improved.
The invention solves the technical problems by the following technical proposal:
a seedling field that is used for north area carp family fish seedling production, includes rail, its characterized in that: the fish breeding device comprises a fence, a fish breeding and hatching unit, a fish purifying unit, a fish breeding and hatching unit, a material storage chamber and a waste treatment chamber, wherein the fish breeding unit comprises a parent fish pond, a backup parent fish pond and a fish pond, and the parent fish pond, the backup parent fish pond and the fish pond are all connected to a first deep well arranged in a fish field through culverts; the tail water purification unit comprises a drainage canal, a purification wetland, a purification pond and a water storage pond, wherein the parent fish pond, the backup parent fish pond and the fish seed pond are all connected to the drainage canal through drain pipes, the drainage canal is connected to the purification wetland, the purification wetland is connected to the purification pond, the purification pond is connected to the water storage pond, and a filtering dam is arranged between the purification pond and the water storage pond; the seed breeding and hatching unit is a greenhouse with a transparent heat-preservation color steel roof, a reservoir, a quarantine pond, a breeding pond, a seedling raising pond and a disinfection pond are arranged in the greenhouse, the reservoir is connected to a second deep well arranged in a seed field, the reservoir is respectively connected to the quarantine pond, the breeding pond, the seedling raising pond and the disinfection pond through culverts, the quarantine pond, the breeding pond, the seedling raising pond and the disinfection pond are all connected to a tail water pond arranged in the seed field, and the tail water pond is connected to the purification wetland.
And a monitoring net cage is arranged in the parent fish pond.
Moreover, the impounded pond is connected to the seed culture unit through a culvert pipe.
Furthermore, the impounded pond is connected to the impounded pond by a culvert.
And the drain pipes of the parent fish pond, the backup parent fish pond and the fingerling pond are respectively provided with a valve.
And a floating bed is arranged in the purifying pond.
The invention has the advantages and beneficial effects that:
1. the invention is used for the fingerlings field for producing fingerlings of carp in northern areas, provides a place for breeding fingerlings of carp without specific epidemic diseases, provides a reference for the construction of fingerlings field without specific epidemic diseases for other large-scale freshwater farmed fishes, ensures the implementation of effective isolation, monitoring, disinfection, harmless treatment and other measures through reasonable arrangement of different functional areas, blocks the risk of serious epidemic disease pathogen transmission in the processes of water use, introduction, input use and fingerling breeding, ensures the normal operation of fingerlings production without specific epidemic diseases, and controls the epidemic disease circulation and propagation along with fingerlings from the source.
2. The invention is used for a fingerling field for producing fish fingerlings of the cyprinid family in northern areas, and the cultivation tail water is subjected to treatment such as precipitation, microbial decomposition, aquatic plant absorption, filter feeding animal utilization, filtration and the like of a purification wetland and a purification pond, so that the grading utilization of eutrophication substances such as nitrogen, phosphorus and the like in the tail water and the recycling of water resources are realized, the water resource utilization rate is improved, and the risk that the outside river water is directly quoted and possibly carries epidemic disease pathogens is avoided.
3. The invention is used for the fingerlings field for producing fingerlings of carp in northern areas, the water temperature for breeding and hatching fingerlings can be ensured, the stable production of fingerlings is realized, the early breeding can be realized, the advantage of the improved fingerlings of carp in the same year is utilized, the cultivation benefit is improved. In winter in northern areas, the isolation quarantine pond and the circulating water culture pond can be used for culturing cold-resistant aquatic products such as largehead perch, tilapia and the like which are not easy to cause pathogen of the Ukelano scale carps; the seedling raising pond can utilize the cultivation tail water to carry out the planting and the overwintering of the water hyacinth and other purified plants and the floating bed planting of the aquatic vegetables, thereby purifying the cultivation tail water and improving the utilization rate of the greenhouse.
4. The invention has scientific and reasonable design, can reduce the external pollution discharge of the eutrophication substances in the tail water of the cultivation to pollute the external environment, and can avoid the risk of using an external water source to carry epidemic disease pathogens; meanwhile, aquatic product and aquatic plant cultivation can be carried out, the cultivation tail water is purified, and the utilization rate is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Description of the reference numerals
1-parent fish pond, 2-monitoring net cage, 3-backup parent fish pond, 4-drain pipe, 5-fish pond, 6-culvert pipe, 7-drain canal, 8-first deep well, 9-water storage pond, 10-filtering dam, 11-duty room, 12-culture pond, 13-disinfection pond, 14-seedling pond, 15-second deep well, 16-reservoir, 17-quarantine pond, 18-material storage room, 19-tail water pond, 20-waste treatment room, 21-purifying pond, 22-floating bed, 23-purifying wetland and 24-fence.
Detailed Description
The invention is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.
A fingerling field for production of fish fingerlings of the cyprinid family in northern areas, comprising a fence 24, which is innovative in that: the fish culture device further comprises a fish culture unit, a tail water purification unit, a fish breeding and hatching unit, a material storage chamber 18 and a waste treatment chamber 20 which are arranged in the fence, wherein the fish culture unit comprises a parent fish pond 1, a backup parent fish pond 3 and a fish pond 5, and the parent fish pond, the backup parent fish pond and the fish pond are all connected to a first deep well 8 arranged in a fish field through culverts 6; the tail water purification unit comprises a drainage canal 7, a purification wetland 23, a purification pond 21 and a water storage pond 9, wherein the parent fish pond, a backup parent fish pond and a fish seed pond are all connected to the drainage canal through drain pipes 4, the drainage canal is connected to the purification wetland, the purification wetland is connected to the purification pond, the purification pond is connected to the water storage pond, a filtering dam 10 is arranged between the purification pond and the water storage pond, the purification wetland is mainly made of local aquatic plants such as reed and calamus, and then floating plants with developed sewage absorption capacity such as water hyacinth, large stratos and the like are moved into the water hyacinth; reed, calamus, water caltrop, goldfish algae, water lily, water hyacinth, water lettuce and other aquatic vegetables are transplanted into the purifying pond, and a floating bed 22 is arranged for transplanting water celery, water spinach and other aquatic vegetables; and (3) putting filter feeding animals such as silver carp, bighead carp, freshwater mussel and the like, splashing beneficial microbial preparations such as photosynthetic bacteria, EM bacteria, bacillus and the like, constructing a stable biological purification group, and purifying the culture tail water efficiently.
The cultivation tail water is subjected to treatment such as precipitation, microbial decomposition, aquatic plant absorption, filter feeding animal utilization, filtration and the like of the purification wetland and the purification pond, so that the grading utilization of eutrophication substances such as nitrogen, phosphorus and the like in the tail water and the recycling of water resources are realized, the water resource utilization rate is improved, and the risk that epidemic pathogens can be carried by directly introducing external river water is avoided.
The seedling breeds hatching unit is the big-arch shelter that is provided with transparent heat preservation various steel roof, be provided with a plurality of windows on the big-arch shelter and be used for printing opacity, still be provided with the ventilation tripe, set up the fly net on the ventilation tripe, be provided with cistern 16 in the big-arch shelter, quarantine pond 17, breed pond 12, grow seedlings pond 14, disinfection pond 13 and duty room 11, the cistern is connected to the second deep well 15 that sets up in the seedling field, the cistern is connected to quarantine pond respectively through the culvert pipe, breed pond, grow seedlings pond and disinfection pond, quarantine pond, breed pond and disinfection pond all are connected to the tailstock pond 19 that sets up in the seedling field, the tailstock pond is connected to the purification wetland, quarantine pond mainly used keeps apart and epidemic monitoring to outside induced fish and monitoring whistle fish, in 11 months to 3 months in the next year, the seedling field utilizes quarantine pond and breed the breed rofei fish in the seedling field, large-mouth black bass and the like to the pathogenic aquatic products of the department and the higher economic value, the nutrient substance and the water in the breed tailstock pond and the water of raising and the water of the plant and the water-logging device are carried out, the ecological water and the water-logging device is used in the greenhouse is high-quality and the water-saving and the water-logging device is high-quality is advanced and the water-saving, the water-logging is high-quality and the water-quality is high-clear.
Be provided with monitoring box with a net 2 in parent's pond for throw in the sentinel fish and monitor whether wait to examine the parent fish and carry specific epidemic disease pathogen, can control epidemic disease transmission from the source.
The water storage pond is respectively connected to the seed culture unit and the seed breeding incubation unit through culverts, and the purified culture tail water can be recycled, so that the water resource utilization rate is improved.
The drain pipes of the parent fish pond, the backup parent fish pond and the fingerling pond are respectively provided with a valve, so that the discharge of the culture tail water can be controlled according to the culture requirements, and the fingerling culture environment is ensured.
Although the embodiments of the present invention and the accompanying drawings have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments and the disclosure of the drawings.
Claims (4)
1. A seedling field that is used for north area carp family fish seedling production, includes rail, its characterized in that: the fish breeding device comprises a fence, a fish breeding and hatching unit, a fish purifying unit, a fish breeding and hatching unit, a material storage chamber and a waste treatment chamber, wherein the fish breeding unit comprises a parent fish pond, a backup parent fish pond and a fish pond, and the parent fish pond, the backup parent fish pond and the fish pond are all connected to a first deep well arranged in a fish field through culverts; the tail water purification unit comprises a drainage canal, a purification wetland, a purification pond and a water storage pond, wherein the parent fish pond, the backup parent fish pond and the fish seed pond are all connected to the drainage canal through drain pipes, the drainage canal is connected to the purification wetland, the purification wetland is connected to the purification pond, the purification pond is connected to the water storage pond, and a filtering dam is arranged between the purification pond and the water storage pond; the seedling breeding and hatching unit is a greenhouse with a transparent heat-preservation color steel roof, a water reservoir, a quarantine pond, a breeding pond, a seedling pond and a disinfection pond are arranged in the greenhouse, the water reservoir is connected to a second deep well arranged in the seedling field, the water reservoir is respectively connected to the quarantine pond, the breeding pond, the seedling pond and the disinfection pond through culverts, the quarantine pond, the breeding pond, the seedling pond and the disinfection pond are all connected to a tail water pond arranged in the seedling field, and the tail water pond is connected to the purified wetland;
a monitoring net cage is arranged in the parent fish pond;
the water storage pond is connected to the seed culture unit through a culvert pipe.
2. A fingerling field for use in the production of fingerlings of carp species in northern areas according to claim 1, wherein: the impounded pond is connected to the impounded pond through a culvert.
3. A fingerling field for use in the production of fingerlings of carp species in northern areas according to claim 1, wherein: and valves are arranged on drain pipes of the parent fish pond, the backup parent fish pond and the fingerling pond.
4. A fingerling field for use in the production of fingerlings of carp species in northern areas according to claim 1, wherein: a floating bed is arranged in the purifying pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445043.3A CN110074038B (en) | 2019-05-27 | 2019-05-27 | A seedling field that is used for northern area carp family fish seedling production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910445043.3A CN110074038B (en) | 2019-05-27 | 2019-05-27 | A seedling field that is used for northern area carp family fish seedling production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110074038A CN110074038A (en) | 2019-08-02 |
| CN110074038B true CN110074038B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910445043.3A Active CN110074038B (en) | 2019-05-27 | 2019-05-27 | A seedling field that is used for northern area carp family fish seedling production |
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Family Cites Families (1)
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