CN114946723A - Intensive pond culture method for procambarus clarkii - Google Patents
Intensive pond culture method for procambarus clarkii Download PDFInfo
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- 241000238030 Procambarus clarkii Species 0.000 title claims abstract description 15
- 238000012136 culture method Methods 0.000 title claims abstract description 5
- 241000238557 Decapoda Species 0.000 claims abstract description 68
- 241000238017 Astacoidea Species 0.000 claims abstract description 26
- 230000000366 juvenile effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 74
- 241000196324 Embryophyta Species 0.000 claims description 25
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 14
- 241000195493 Cryptophyta Species 0.000 claims description 13
- 238000012258 culturing Methods 0.000 claims description 10
- 230000002354 daily effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 241000252229 Carassius auratus Species 0.000 claims description 7
- 241000498251 Hydrilla Species 0.000 claims description 7
- 235000012255 calcium oxide Nutrition 0.000 claims description 7
- 239000000292 calcium oxide Substances 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 201000010099 disease Diseases 0.000 claims description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 5
- 244000005700 microbiome Species 0.000 claims description 5
- 241000251468 Actinopterygii Species 0.000 claims description 4
- 241000233866 Fungi Species 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000003203 everyday effect Effects 0.000 claims description 4
- 239000003895 organic fertilizer Substances 0.000 claims description 4
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 3
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 3
- 241000195649 Chlorella <Chlorellales> Species 0.000 claims description 3
- 241000238631 Hexapoda Species 0.000 claims description 3
- 241000607479 Yersinia pestis Species 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000007844 bleaching agent Substances 0.000 claims description 3
- 210000003608 fece Anatomy 0.000 claims description 3
- 238000003973 irrigation Methods 0.000 claims description 3
- 230000002262 irrigation Effects 0.000 claims description 3
- 239000010871 livestock manure Substances 0.000 claims description 3
- 239000010813 municipal solid waste Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 claims description 2
- 239000003337 fertilizer Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 5
- 235000009566 rice Nutrition 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 241000209094 Oryza Species 0.000 abstract 2
- 238000003306 harvesting Methods 0.000 abstract 1
- 238000009395 breeding Methods 0.000 description 4
- 230000001488 breeding effect Effects 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 240000007594 Oryza sativa Species 0.000 description 3
- 230000004083 survival effect Effects 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 241000238565 lobster Species 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000474 nursing effect Effects 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 230000002180 anti-stress Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000012364 cultivation method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; 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
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- 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
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- Life Sciences & Earth Sciences (AREA)
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- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Botany (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a pond intensive culture method of procambarus clarkii, which comprises the steps of putting juvenile procambarus clarkii in the beginning of 4 months and harvesting first-batch procambarus clarkii in the beginning of 6 months; and (4) starting to implement a rotation catching and rotation releasing mode in 6 months, continuously releasing the seedlings and continuously releasing the shrimps according to the pond density, and continuously releasing the shrimps to the end of 10 months. The invention perfectly staggers the shrimp-producing time of the traditional rice shrimps, selects the rice shrimps to begin to produce the shrimps at the beginning of 6 months, has large shrimp-producing specification and high selling price, effectively improves the economic benefit of crayfish culture, and is more beneficial to increasing income and increasing yield of farmers.
Description
Technical Field
The invention belongs to the technical field of procambarus clarkia cultivation, and particularly relates to a pond intensive cultivation method of procambarus clarkia.
Background
The procambarus clarkii, namely the crayfish which is usually liked by people, has the characteristics of super-strong adaptability, high reproduction rate and the like, and is widely distributed in the middle and lower reaches of the Yangtze river, south China, north China and other areas, particularly more in the middle and lower reaches of the Yangtze river, and becomes a species which is completely classified in natural water areas of China. In recent years, crayfish has become an important economic breeding variety in China because of its abundant meat quality, abundant nutrition and delicious taste.
The traditional rice shrimp culture adopts a mode of releasing the seedlings in the beginning of 4 months and selling the shrimps in 5 months, so that a large amount of crayfish are concentrated on the market in 5 months. The concentrated selling brings the shrimp price to be reduced. Many farmers spend a few months hard, invest a lot of manpower, material resources and financial resources, only sell 5 yuan/jin at last, and the shrimp culture income is low, resulting in low cultivation enthusiasm of farmers. The intensive culture of the crayfishes is difficult to overcome the problems of seedling release in high-temperature seasons, low survival rate of shrimp culture and difficult nursing of aquatic weeds.
Disclosure of Invention
The invention solves the technical problem of providing the pond intensive culture method of the procambarus clarkia, which can effectively solve the problems of low culture yield of the traditional rice shrimps and difficult management in an intensive culture mode in high-temperature seasons and can improve the overall economic benefit of farmers.
The invention adopts the following technical scheme for solving the technical problems, and the method for intensive pond culture of the procambarus clarkii is characterized by comprising the following specific steps of:
(1) selecting a pond: selecting a pond with sufficient water source, convenient irrigation and drainage, strong water-retaining capacity, fertile soil and 10-20 mu area, digging annular shrimp culture ditches at the inner side of the pond, wherein the width of the annular shrimp culture ditches is 2.8-3.2m, the depth of the annular shrimp culture ditches is 0.4-0.6m, the water depth of the annular shrimp culture ditches is 1.5-1.7m, the water depth of the pond is 1.2-1.4m, the outer ridges of the pond have a gradient of 1:2.5, the ridges are 2-2.5m high, the ridges around are 1.5-2m wide, and anti-escape walls or anti-escape plates with the height of 0.5m and smooth inner walls are arranged around the ridges;
(2) killing the pond: thoroughly cleaning the pond, killing residual wild trash fish and plant diseases and insect pests, selecting quick lime or bleaching powder for disinfection, pumping out residual water after disinfection, and airing the pond for 12-16 d;
(3) water inlet management: filtering a water inlet by using a 60-mesh net, keeping the water level of the crawfish culture pond to be 0.6-1.0m in 4 months, promoting the growth of aquatic weeds, plankton and screws in the crawfish culture pond and the shelling of juvenile crawfish, deepening the pond water in the pond in 6-8 months, and keeping the water level to be 1.4-1.6 m;
(4) planting aquatic weeds: the water plants are selected from hydrilla verticillata and goldfish algae, 2 rows of hydrilla verticillata and 2 rows of goldfish algae are planted on the platform, and the water plants are well maintained, wherein the water plant coverage rate is 30-50% of the water body area;
(5) water quality regulation and control: controlling the pH value of the water body to be 7.5-8.5, adjusting by using quick lime, dissolving oxygen in the water body by 3-4mg/L, ensuring the transparency to be 28-32cm, and fertilizing the water by using organic fertilizers, algae and fungi to ensure that the water body is rich in microorganisms;
(6) putting the shrimp larvae: selecting young shrimps with consistent size and specification, placing the young shrimps once enough, selecting the young shrimps with strong physique and strong vitality for putting, soaking the young shrimps for 1min with multidimensional mixing water before putting so as to reduce stress of the young shrimps, wherein the stocking density is 5000-6000 tails per mu at the beginning of 4 months, and the young shrimps are replenished along with the number of the grown shrimps at the beginning of 6 months, specifically 2000-4000 tails per mu each time;
(7) daily management: selecting high-nutrition and high-protein crayfish feed, feeding 2 times in the morning and evening every day, wherein the daily feeding amount reaches 10% -20% of the weight of the crayfish, the evening feeding amount accounts for 60% -80% of the daily feeding amount, and the crayfish is fed in a ship-supporting full pool, so that the feeding can be properly reduced if the weather is severe, and the bottom-changing and calcium-supplementing medicaments are used every week to prevent diseases;
(8) timely fishing: the seedlings are released at the beginning of 4 months, the seedlings are properly caught at the end of 5 months and at the beginning of 6 months according to market quotations, the catching tool is a ground cage or a shrimp cage, meshes of 5-8cm are preferably selected for the hole diameter, a new batch of shrimp seedlings can be released according to the pond density after the catching, and the process can be continued to the end of 8 months.
Further preferably, the width of the annular shrimp culturing ditch is 3m, the depth of the annular shrimp culturing ditch is 0.5m, the water depth of the annular shrimp culturing ditch is 1.6m, and the water depth of the pond is 1.3 m.
Further preferably, the water level of the crayfish culture pond is kept 0.8m in 4 months, and the pond water is deepened in the pond in 6-8 months of high-temperature seasons, and the water level is kept 1.5 m.
Further preferably, an organic fertilizer, algae and bacterium mode is adopted, namely manure, chlorella, diatom and bacillus are adopted, and the water body is kept rich in microorganisms.
Compared with the prior art, the invention has the following advantages and beneficial effects: the traditional rice shrimp breeding mode adopts the mode of releasing the seedlings in the beginning of 4 months and selling the shrimps in 5 months, so that a large amount of crayfish are concentrated on the market in 5 months. The concentrated selling brings about the gliding of the shrimp prices. Many farmers spend a few months hard, invest a lot of manpower, material resources and financial resources, only sell 5 yuan/jin at last, and the shrimp culture income is low, resulting in low cultivation enthusiasm of farmers. The problems of seedling release in high-temperature seasons, low survival rate of the cultured crayfish and difficult nursing of aquatic weeds are difficult to overcome in intensive culture of the crayfish, which is a main reason for limiting the development of the intensive culture of the crayfish over the years. The invention ensures that the water temperature at the bottom of the pond is lower by modifying the pond and deepening the pond, and ensures the survival rate of aquatic plants in a high-temperature season by selecting two aquatic plants, namely hydrilla verticillata and goldfish algae. Stress reaction caused by seedling release in high-temperature season is reduced by using anti-stress drugs and the like. The traditional shrimp discharging time limit is broken through, the shrimps are discharged in 6-10 months in a circulating mode, and the unit per mu yield and the economic benefit can be greatly improved.
Detailed Description
The specific embodiments of the present invention will be described in detail with reference to specific examples.
A pond intensive culture method of procambarus clarkii comprises the following specific steps:
(1) selecting a pond: a pond with sufficient water source, convenient irrigation and drainage, strong water retention capacity, fertile soil and 20 mu of area is selected, annular shrimp culture ditches are dug in the pond, the width of each annular shrimp culture ditch is about 3m, the depth of each annular shrimp culture ditch is about 0.5m, the depth of each annular shrimp culture ditch can reach 1.5m to 1.7m, the depth of each pond can reach about 1.3m, the outer ridge of the pond has a gradient of 1:2.5, the ridge is higher than 2m, the width of the peripheral ridge is higher than 1.5m, and anti-escape walls or anti-escape plates with the height of 0.5m and smooth inner walls are arranged on the ridges.
(2) Killing the pond: thoroughly cleaning the pond, killing residual wild trash fish and plant diseases and insect pests, generally selecting quicklime or bleaching powder and the like for disinfection, pumping out residual water after disinfection, airing the pond for about 14 days with the usage amount of the quicklime of 75 kg/mu, and completing pond airing in the middle and late 3 months.
(3) Water inlet management: the water inlet is filtered by a 60-mesh net, water is added at the bottom of 3 months, the water level of the pond is kept to be 0.8m, the growth of aquatic weeds, plankton, screws and the like in the crayfish culture pond and the shelling of juvenile shrimps are facilitated, the pond water is appropriately deepened when the weather is overheated, namely 6-8 months, the water level is kept to be about 1.5m, and the water temperature of the bottom layer in a high-temperature season is guaranteed to be lower.
(4) Planting aquatic weeds: the water plants mainly select hydrilla verticillata and goldfish algae, are usually planted on a platform, 2 rows of hydrilla verticillata and 2 rows of goldfish algae are ideally planted, the well-maintained water plants are the key for protecting the water plants in high-temperature seasons, the planting point positions of the water plants cannot be too dense, the water plant coverage rate is 30% -50% of the water body area, and the water plant planting is finished at the bottom of March.
(5) Water quality regulation and control: controlling pH of water body between 7.5-8.5, and adjusting with quicklime. The dissolved oxygen of the water body is 3-4mg/L, and the transparency is preferably about 30 cm. The method utilizes organic fertilizer, algae and fungi to fertilize water, ensures that water body microorganisms are rich, and adopts an organic fertilizer, algae and fungi mode, namely manure, chlorella, diatom and bacillus.
(6) Putting the shrimp larvae: the shrimp fries are selected from fries with consistent size and specification and are placed enough at one time. And (3) putting strong and vital shrimp fries, and soaking the shrimp fries in multi-dimensional mixed water for 1min before putting to reduce the stress of the shrimp fries. The stocking density is 6000-year-old 5000-year-old per mu in the early 4 months, and the seedling is replenished along with the shrimp output number in the early 6 months, generally 4000-year-old 2000-year-old per mu.
(7) Daily management: feeding crayfish feed with high nutrition and high protein for 2 times every morning and evening, wherein the daily feeding amount is 15% of the weight of the crayfish, the night feeding amount accounts for 70% of the daily feeding amount, and the crayfish is fed by a ship-supporting full pool. If the weather is bad, the feeding can be properly reduced, and stress is reduced by using stress medicines such as multi-vitamin medicines. Drugs for improving the quality and supplementing calcium are used every week, and ionized calcium is preferably used.
(8) Timely fishing: the seedlings are released at the beginning of 4 months, and can be properly caught from the bottom of 5 months to the beginning of 6 months according to market quotations. The fishing tool is a ground cage or a shrimp cage, and the aperture is preferably 8 cm. When the density is too high, timely fishing is needed to control the density. And selecting alternate-day fishing or daily fishing according to the fishing quantity, and stocking a new batch of shrimp seeds according to the pond density after fishing.
Example 1
In 2021, 32 mu of the precision-cultured lobster pond is divided into two pond mouths in the town of bamboo garden clamped in public security county of Hubei province. The width of the annular shrimp culture ditch is about 3m, the depth of the annular shrimp culture ditch is 0.5m, the water depth of the annular shrimp culture ditch can reach 1.7m, the water depth of the pond can reach about 1.3m, and the ridge on the outer side of the pond is 2m high. And 3, the pond cleaning and drying work is finished at the bottom of 3 months, 17 ten thousand seedlings are released in No. 7 of 4 months, high-grade crayfish feed is fed every day, and the crayfish is caught in No. 24 of 5 months, wherein 4100 jin is caught in 7 days, and the yield per mu reaches 128 jin. The average selling price is 15 yuan/jin, and the total income is 61500 yuan. 12 thousands of seedlings are put again in No. 5 and No. 28, and after No. 6 and No. 20 are started, the seedlings are fished for 5 days, about 3000 jin are fished, and the yield per mu is about 93 jin/mu. The average selling price is 24 yuan/jin, and the total income is 72000 yuan. No. 7/month and No. 21 starts to catch for 7 days, and 5213 jin is caught. The yield per mu reaches 162 jin/mu, the average selling price is 29 yuan/jin, and the total income is 151177 yuan. The statistics is carried out all the year round comprehensively, the yield per mu is 383 jin/mu, the income per mu is 8896 yuan/mu, and the total income is 284677 yuan.
Example 2
In 2021, 14 mu of intensive culture lobster pond was bred in Xianjiang city, Hubei province, bear town. Pond conditions were similar to those described above. And (3) releasing 7 thousands of crayfish seedlings in 4 months and 4 days, feeding crayfish feed every day, beginning to catch No. 5 months and No. 27 crayfish for 5 days, catching 1850 jin in total, producing about 132 jin per mu, selling 16 yuan per jin on average and gaining 29600 yuan in total. And 3 thousands of seedlings are released again in the beginning of 6 months, and No. 24 in 6 months are fished for 5 days, 1300 jin are fished, the average price is 24 yuan/jin, and the total income is 31200 yuan. And 7, fishing all the fish at the bottom of the month, fishing 2100 jin in total, and selling the average price of 29 yuan/jin in total to 60900 yuan. The total annual statistics is integrated, the yield per mu is 375 jin, the total income is 121700 yuan, and the income per mu is 8692 yuan per mu.
Traditional breeding benefit: in the traditional breeding mode of the Xinjiang city bear ballast in Hubei province, the seedlings are released at the bottom of 3 months, the shrimps start to sell the shrimps at the beginning of 5 months, the average yield per mu is about 200 jin/mu, the average price of selling the shrimps at the peak time of 5 months is 8 yuan/jin, and the income per mu is about 1600 yuan/mu.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, the invention further resides in various changes and modifications which fall within the scope of the invention as claimed.
Claims (4)
1. A pond intensive culture method of procambarus clarkii is characterized by comprising the following specific steps:
(1) selecting a pond: selecting a pond with sufficient water source, convenient irrigation and drainage, strong water-retaining capacity, fertile soil and 10-20 mu of area, excavating annular shrimp-culturing ditches at the inner side of the pond, wherein the width of the annular shrimp-culturing ditches is 2.8-3.2m, the depth of the annular shrimp-culturing ditches is 0.4-0.6m, the depth of the annular shrimp-culturing ditches is 1.5-1.7m, the depth of the pond is 1.2-1.4m, the outer ridge of the pond has a gradient of 1:2.5, the ridge is 2-2.5m high, the ridges at the periphery are 1.5-2m wide, and anti-escape walls or anti-escape plates with the height of 0.5m and the smooth inner wall are arranged at the periphery of the ridge;
(2) killing the pond: thoroughly cleaning the pond, killing residual wild trash fish and plant diseases and insect pests, selecting quick lime or bleaching powder for disinfection, pumping out residual water after disinfection, and airing the pond for 12-16 d;
(3) water inlet management: filtering a water inlet by using a 60-mesh net, keeping the water level of the crawfish culture pond to be 0.6-1.0m in 4 months for promoting the growth of water plants, plankton and screws in the crawfish culture pond and the shelling of juvenile crawfish, deepening the pond water in the pond in 6-8 months, and keeping the water level to be 1.4-1.6 m;
(4) planting aquatic weeds: the water plants are selected from hydrilla verticillata and goldfish algae, 2 rows of hydrilla verticillata and 2 rows of goldfish algae are planted on the platform, and the water plants are well maintained, wherein the water plant coverage rate is 30-50% of the water body area;
(5) water quality regulation and control: controlling the pH value of the water body to be 7.5-8.5, adjusting by using quick lime, dissolving oxygen in the water body by 3-4mg/L, ensuring the transparency to be 28-32cm, and fertilizing the water by using organic fertilizers, algae and fungi to ensure that the water body is rich in microorganisms;
(6) and (3) putting the shrimp larvae: selecting young shrimps with the same size and specification, fully putting the young shrimps once, selecting the young shrimps with strong physique and strong vitality for putting, soaking the young shrimps in multi-dimensional mixed water for 1min before putting so as to reduce the stress of the young shrimps, wherein the stocking density is 5000-6000 fries per mu at the beginning of 4 months, and the young shrimps are supplemented along with the number of the young shrimps after 6 months, specifically 2000-4000 fries per mu each time;
(7) daily management: selecting high-nutrition and high-protein crayfish feed, feeding 2 times in the morning and evening every day, wherein the daily feeding amount reaches 10% -20% of the weight of the crayfish, the evening feeding amount accounts for 60% -80% of the daily feeding amount, and the crayfish is fed in a ship-supporting full pool, so that the feeding can be properly reduced if the weather is severe, and the bottom-changing and calcium-supplementing medicaments are used every week to prevent diseases;
(8) timely fishing: the seedlings are released at the beginning of 4 months, the seedlings are properly caught at the end of 5 months and at the beginning of 6 months according to market quotations, the catching tool is a ground cage or a shrimp cage, meshes of 5-8cm are preferably selected for the hole diameter, a new batch of shrimp seedlings can be released according to the pond density after the catching, and the process can be continued to the end of 8 months.
2. The method of pond intensive culture of procambarus clarkii according to claim 1, wherein: the width of the annular shrimp culturing ditch is 3m, the depth of the annular shrimp culturing ditch is 0.5m, the water depth of the annular shrimp culturing ditch is 1.6m, and the water depth of the pond is 1.3 m.
3. The method of pond intensive culture of procambarus clarkii according to claim 1, wherein: keeping the water level of the crayfish culture pond 0.8m in 4 months, deepening the pond water in the pond in 6-8 months in high-temperature seasons, and keeping the water level 1.5 m.
4. The method of pond intensive culture of procambarus clarkii according to claim 1, wherein: the mode of organic fertilizer, algae and bacteria is adopted, namely manure, chlorella, diatom and bacillus, so that the water body is kept rich in microorganisms.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115486396A (en) * | 2022-09-27 | 2022-12-20 | 江苏里下河地区农业科学研究所 | Crayfish ecological breeding method based on true and false aquatic weed biological function |
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|---|---|---|---|---|
| GB1291991A (en) * | 1969-10-21 | 1972-10-04 | Marifarms Inc | Improvements in or relating to methods of culturing shrimp artificially |
| CN104206329A (en) * | 2014-09-01 | 2014-12-17 | 明光市永言水产(集团)有限公司 | Method for breeding procambarus clarkii spring seedlings in pond |
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