CN104206329A - Method for breeding procambarus clarkii spring seedlings in pond - Google Patents

Method for breeding procambarus clarkii spring seedlings in pond Download PDF

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Publication number
CN104206329A
CN104206329A CN201410440459.3A CN201410440459A CN104206329A CN 104206329 A CN104206329 A CN 104206329A CN 201410440459 A CN201410440459 A CN 201410440459A CN 104206329 A CN104206329 A CN 104206329A
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pond
shrimp
water
beach
circular groove
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CN104206329B (en
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宋光同
胡从玉
丁凤琴
钱长建
王飞
汪翔
侯冠军
赵宏远
陈静
武松
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MINGGUANG YONGYAN AQUATIC GROUP Corp
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MINGGUANG YONGYAN AQUATIC GROUP Corp
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Abstract

The invention provides a method for breeding procambarus clarkii spring seedlings in a pond. A pot bottom-shaped pond structure is replaced by a structure formed by a circular groove and a shallow, so that the enlargement of a burrowing breeding area of crawfish, the complete freezing-drying of the pond, the enlargement of a feeding area and the like are facilitated; a step-by-step precipitation method is used for guiding the burrowing overwintering and reproduction of the crawfish, and straws are used for preserving heat and protection against cold; aquatic plants are arranged in two stages, corrugated clay tile shelters are arranged among the aquatic plants, so that the perching area of the crawfish is enlarged, and fresh and tender green feeds are provided; fertilizers are applied to cultivate sufficient natural bait organisms in three stages to ensure the fertility of water in the pond, so that the rapid growth of the aquatic plants is facilitated, and sufficient high-quality natural biologic baits are cultivated for feeding the crawfish; the above measures have the advantages of strengthening the physique of the crawfish, increasing the overwintering survival rate of the crawfish, reducing the probability of cannibalization of the seedlings, increasing the proportion of the spring seedlings, improving the specification uniformity of the seedlings and the like, and are significant for improving the unit breeding yield and economic benefits of the pond.

Description

A kind of pond Procambius clarkii spring seedling mating system
Technical field
The present invention relates to shrimps offspring breeding method, specifically establish and relate to a kind of pond Procambius clarkii spring seedling mating system.
Background technology
Procambius clarkii ( procambarus clarkii) be commonly called as freshwater crayfish, originate in north America region, nineteen twenty-nine introduces China through Japan, and naturally multiplying and living and manually introducing a fine variety cultivation through decades, has now become one of important economic freshwater shrimps of China.Its at home catering trade, food market, supermarket demand prevail, supply falls short of demand for the outlet deep processed product such as peeled shrimp, whole shrimp, and drive China's Procambius clarkii aquaculture industry fast-developing, the demand of direct pull seed grows with each passing day.The pond Procambius clarkii seed breeding technology that China is traditional, main employing pot bottom-shape pond structure; After October, adopt draining gradually to depth of water 50-60cm, induction cray enters cave breeding, survives the winter; In 3-4 month in next year, when water temperature stability is more than 15 DEG C, disposable water to be filled it up with, stimulate cray to take young shrimp and go out cave and enter pond, carry out seed rearing; Early April starts to take turns the listing of shrimping seedling or point pool cultivation.This conventional art Problems existing mainly contains; One is existing pond structure, the area of burrowing that there is cray be only confined to the ridge, pool surrounding, area of throwing something and feeding little, thoroughly cannot freeze defects such as shining at the bottom of the pool; Two is transplant water peanut after many employing cray parents throw in, and pasture and water kind is single, and pasture and water are subject to cray destruction, often cause the problems such as nursery pond pasture and water are few, water quality is thin, moss grows; Three is that conventional art often adopts mesh sheet, fragment of brick, old tire as things concealed, but it is comparatively large to arrange randomness, and practicality is not strong, four is that water table management of surviving the winter winter is not in place, easily causes shrimp seedling to go out cave in advance, easily meets extremely cold weather and is freezed to death, and causing shrimp seedling specification great disparity large, autotomy phenomenon is serious; In induction breeding, training water and catching method etc., also there are some problems in addition, need Optimal improvements.Due to above defect; tradition cray offspring breeding method; seedling percent is low, shrimp seedling specification is irregular, specific yield is low, of poor benefits; conventional art cannot meet the needs of Procambius clarkii scale breeding; China there is no the enterprise of large-scale production shrimp seedling so far; current cultivation shrimp seedling is still fished for based on field, and high-quality seed source remains one of bottleneck of China's Procambius clarkii industry development.
Summary of the invention
The present invention is intended to the defect solving traditional offspring breeding method, from pond structure of modification, pasture and water are arranged, things concealed is arranged, induction breeding, overwinter management, the aspect transformation innovations such as spring seedling cultivation, most of shrimp seedling is made to leave parent in spring, carry out spring seedling cultivation, a kind of pond Procambius clarkii spring seedling mating system is provided, the method is conducive to increasing cray and burrows area, solarization is thoroughly frozen in pond, increase feedstuff feeding area, cultivate natural biological bait, increase cray sheltered situation, pasture and water are arranged, improve shrimp seedling ratio in spring, promote shrimp seedling neat specification degree etc., unit are shrimp seedling amount and economic benefit can be improved.
Technical scheme of the present invention is as follows:
The technical program comprises pond structure of modification, levels sterilization, fertilising, pasture and water are arranged, things concealed is arranged, close shrimp throw in raise, induce breed, overwinter management, cultivation natural biological bait, seed rearing and catching method link.
Described pond structure of modification is, change " pot bottom-shape " pond structure of conventional art into " circular groove+shoal " structure, for pond area 10 mu, aspect ratio 2:1, end circular groove along pond surrounding, utilize excavation pond sludge, raise central authorities enclose beach and strengthen the ridge, the pool gradient, make the wide 5-6m in circular groove upper end, lower bottom width 1.0-1.5m, dark 0.7-0.9m, slope than 1:3, ridge face width 1.5-2.0 rice, circular groove area accounts for pond gross area 24-27%;
Described preparation of ponds sterilization is that close shrimp is thrown in first 1 month, thoroughly removes in pond, the ridge, pool weeds and rubble, and pond adds water and floods central authorities and enclose beach 20cm, uses lump limeization slurry evenly to splash in full pond while hot, every mu of use quicklime 150 kilograms.
Described fertilising comprises three phases.First stage is in latter 3 days of sterilization of cleaning up the pond, and encloses beach and to bank up the organic manure fully become thoroughly decomposed, every mu of usage amount 200-300 kilogram along circular groove surrounding and central authorities; After second stage is January in next year, select continuous fair weather, depending on circular groove water body fertilizer degree, suitably apply fertilizer, the fertile degree that retaining ring ditch water quality is certain; Phase III is mid or late March in next year, encloses beach and to bank up organic manure, every mu of usage amount 200-300 kilogram along circular groove surrounding and central authorities; The natural bait cultivating cray abundance is biological, improves the survival rate of close shrimp and shrimp seedling, and can prevent winter-spring season moss from growing;
Described pasture and water arrange and comprise two stages.First stage is, before close shrimp is thrown in, mainly arrange hydrilla verticillata and water peanut, in latter 7th day of sterilization of cleaning up the pond, arranges a branch of water peanut, utilize bamboo pole and rope to fix along circular groove surrounding every 10 meters; Central authorities enclose long 8-10cm is transplanted on beach hydrilla verticillata trophosome according to seeding row spacing 6m × 6m.Second stage is the middle ten days and the last ten days in March, selects fine day, and add water and flood central authorities and enclose beach 20cm, transplant a branch of waterweed along circular groove every 7-10 rice, central authorities enclose on beach, transplants waterweed trophosome according to seeding row spacing 6m × 6m; Pasture and water utilize 10g/m before transplanting 3bleaching powder to soak after 10 minutes the lower pool, to add that deep water level is paramount goes out to enclose beach 50-60cm gradually along with pasture and water live;
It is utilize specification for 40cm × 30cm waveform potter's clay tile, be arranged at central authorities and enclose between the pasture and water on beach that described things concealed is arranged, and the long limit of tile lands vertical setting of types, arranges row's tile, tile marshalling, often arrange about about 20 pieces every 10 meters;
It is the middle ten days and the last ten days in August, select physically fit, that duricrust bright red, body weight 25-40kg, abdominal muscles are full, gonad development is good close shrimp that described close shrimp is thrown in raising, throws in 60-100 kilogram, sex ration (3-4): 1 for every mu, and close shrimp uses 15g/m before throwing in 3liquor potassic permanganate soak 5-10 minute.Feed can select the agricultural product such as soya bean (20%), corn (15%), wheat (15%), the flesh of fish of collocation 50% and mussel meat, and rate 2-3% is raised in day throwing, and every day, post sunset was thrown something and fed 1 time, and takes the circumstances into consideration increase and decrease according to residual bait, weather, water quality;
Described induction breeding is that in the first tenday period of a month in October, temperature declines gradually, every 5 ~ 7 days precipitation 1 time, each precipitation about 10cm, until late October, water level is down to 50-60cm in circular groove, exposes pond central authorities and encloses beach, progressively induce close shrimp enclose on Tang Geng slope and central authorities beach burrow breeding, survive the winter;
Described overwinter management is, after November, retaining ring ditch water level 50-60cm, supplements in time for the water level consumed, and central shoal keeps freezing solarization state; After the middle ten days in December, thick 2-3cm straw is laid on the ridge, slope and breeding shoal, carries out severe winter thermal insulation and cold resistance, and remove circular groove ice cube and accumulated snow in time;
Described cultivation natural bait biology is, next year, mid or late March, selected continuous fair weather, add water to flood and enclose beach 20cm, enclose beach along circular groove surrounding and central authorities to bank up the organic manure fully become thoroughly decomposed, every mu of usage amount 200-300 kilogram, cultivate natural bait biology and ingest for cray shrimp seedling after surviving the winter;
Described seed reinforced cultivating, the middle ten days and the last ten days March in next year, water temperature is progressively gone up, along with alive of waterweed, to add to gradually to flood and enclose beach 40-50cm, except stacking the fertilizer cultivation natural bait biology confession cray of fully becoming thoroughly decomposed along pond circular groove surrounding and central shoal and ingesting, need to carry out feedstuff feeding, shrimp seed rearing is mainly divided into three phases in good time;
Further, the described first stage is dusk every day and morning, when finding that a large amount of seed is movable on bank, start soya-bean milk of splashing, every mu of consumption 1kg soya bean, is increased to 3kg/ mu later gradually, depending on the number of hydroplankton amount, suitably can increase and decrease the feeding volume of soya-bean milk, break into soya-bean milk and evenly splash along pool side, every natural gift 8:00-9:00,12:00-13:00,18:00-19:00 splash 3 times;
Further, described second stage is that most of shrimp seedling body reaches 1.5 ~ 2cm, soya-bean milk changes rough bean powder, the fish gruel of boiling, meat gruel gradually into, add water after mixing and enclose beach along pond circular groove surrounding shoal and central authorities and evenly splash, feeding volume accounted for and deposited 10 ~ 15% of the pool juvenile prawn weight day, and every natural gift 8:00-9:00,12:00-13:00,18:00-19:00 splash 3 times;
Further, the described phase III is that cray seed body is when reaching more than 3cm, feed can select the agricultural product such as soya bean (20%), corn (15%), wheat (15%), the flesh of fish, the mussel meat of collocation 50%, day feeding volume accounts for deposits 5 ~ 6% of pool shrimp body weight, enclose beach along pond circular groove surrounding shoal and central authorities evenly to throw something and feed, every day, post sunset was thrown something and fed 1 time, the visual weather of concrete day feeding volume, water quality, shrimp seedling ingest situation, residual bait etc. take the circumstances into consideration increase and decrease;
Described catching method comprises parent's shrimp recapture in postpartum and shrimp seedling is fished for.
Further, described parent shrimp recapture in postpartum is, April in next year early and middle ten days, running check juvenile prawn departs from the situation of parent, intake latter 10 days, when most of young leave close shrimp battalion live on one's own life time, every day arranges along breeding pond surrounding the lobster basket that mesh is 2cm at dusk, put small fish and trap close shrimp, lobster basket two head above water, every day 22:00 ~ 24:00 and next day 6:00 ~ 7:00 respectively receive shrimp 1 time, juvenile prawn is put back to nursery pond continue cultivate, the close shrimp of recapture goes on the market in time, reduces close shrimp to the cannibalisation of juvenile prawn and reduce costs.
Further, described shrimp seedling is fished for and is, late April in next year starts to take turns shrimping seedling, and every day at dusk encloses beach along pond circular groove surrounding and central authorities, and to arrange mesh be 1.5cm lobster basket, places small fish trapping shrimp seedling, lobster basket two head above water, played cage every 3 ~ 4 hours 1 time, large gauge shrimp seedling body being reached 4 ~ 5 centimetres is sold or point pool cultivation, and small dimension shrimp seedling is put back to nursery pond and continued to cultivate, to mid or late May, shrimp seedling all catches out by the dry pool.
The inventive method is conducive to increasing that cray is burrowed that area, pond are thoroughly frozen solarizations, increase feedstuff feeding area, cultivate natural biological bait, increased cray sheltered situation, pasture and water are arranged, improves shrimp seedling ratio in spring, lifting shrimp seedling neat specification degree etc., can improve unit are shrimp seedling amount and economic benefit.
Accompanying drawing explanation
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is specific embodiment of the invention pond structural representation.
In figure: 1, pond, 2, circular groove, 3, central authorities enclose beach, 4, pasture and water, 5, tile,
Fig. 2 is pond circular groove structural representation.
In figure: 6, circular groove top, 7, circular groove goes to the bottom, 8, ditch depth, 9, slope, 10, Tang Geng.
Embodiment
1, pond structure of modification
Shown in accompanying drawing 1, changing " pot bottom-shape " pond structure of conventional art into " circular groove+shoal " structure, is 10 mu, aspect ratio 2:1 for nursery pond (1) area, along pond surrounding excavation circular groove (2), utilize excavation pond sludge, raise and tamp the ridge, the pool, making the wide 6m(6 of ditch upper port), the wide 1.2m(7 in bottom), ditch depth 0.8m(8), ridge height 0.6-0.8 rice, ridge face width more than 1.5 meters, slope (9) slope is than 1:3, and circular groove (2) area accounts for the pond gross area about 26%; Utilize thick plastic film to arrange and prevent escaping wall, prevent that escaping film imbeds 15-20 centimetre, 40 centimetres above ground level of top, and perpendicular to the ground; Water inlet arranges 80 order double deck screen tulle cloth, and discharge outlet arranges the close eye guard of 40 order.
2, tan by the sun
At the beginning of 7 months, select fair weather, drain Chi Shui, tan by the sun 10-15 days, make at the bottom of pond in polygon.
3, to clean up the pond sterilization
Mid-July, remove in nursery pond (1), the ridge, pool weeds and rubble, nursery pond (1) water filling is flooded central authorities and is enclosed (3) 20 centimetres, beach, utilizes lump lime thoroughly to clean up the pond sterilization, usage amount per mu about 150 kilograms, thoroughly kills swamp eel, loach, snakeheaded fish and small fish etc.
3, apply fertilizer
After lime disinfection 3 days, use fully become thoroughly decomposed organic manure 200-300 kilogram as base manure, enclose beach (3) fixed point along pond circular groove (2) surrounding and central authorities and bank up, water quality of fostering and apply fertilizer for every mu.
4, pasture and water are arranged
After lime disinfection the 7th day, enclose beach (3) in pond central authorities and transplant pasture and water (4)-hydrilla verticillata according to seeding row spacing 6 meters × 6 meters; At 7 ~ 10 meters, pond circular groove (2) interval plantation pasture and water (4)-water peanut, fix with bamboo pole and rope; After spring in next year adds water, transplant pasture and water (4)-waterweed in central shoal (3) and circular groove (2), along with alive of pasture and water, add deep water level gradually to 50-60cm; Pasture and water use 10g/m before transplanting 3bleaching powder (available chlorine 30%) soaking disinfection 10 minutes, transplants after cleaning with clear water.
5, things concealed is arranged
Utilize specification for 40cm × 30cm waveform potter's clay tile (6), to arrange and central authorities enclose between the pasture and water (4) of beach (3), the long limit of tile lands vertical setting of types, arranges row's tile, tile marshalling, often arrange about about 20 pieces every 10 meters.
6, close shrimp is thrown in
Mid-August, pond pasture and water (4) area coverage reaches 30-40%, and carry out close shrimp and put in a suitable place to breed, close shrimp is chosen from resourceful lake, require physically fit, duricrust bright red, body weight 25-40kg, abdominal muscles are full, gonad development good; Input 60-100 kilogram per mu, sex ration (3-4): 1; Through the close shrimp of transport, evenly to splash shrimp body with Chi Shui, 4 ~ 5 minutes, interval, splashes once, continuous 3 ~ 4 times, allows it adapt to 15 ~ 20 minutes, allows close shrimp fully absorb water, the balance temperature difference; Parent shrimp uses 15g/m before throwing in 3liquor potassic permanganate soak 5-10 minute, be poured on gently on slope, pond, allow it climb into voluntarily in water.
7, parent shrimp rearing
Parent shrimp feed can select soya bean (20%), wheat (15%), corn (15%), mussel meat, the flesh of fish (50%), soak 12 hours after soya bean, wheat, corn mixing, with freshwater mussel, oppress mix after throw something and feed, day feeding volume accounts for the 2-3% depositing pool shrimp body weight, be as the criterion without residual bait with early morning on next day, every day, post sunset was thrown something and fed 1 time, along pond circular groove (2) surrounding and enclose beach (3) and evenly throw something and feed, can utilize bamboo basket etc. that 2-3 feed table is set, next day checks residual bait situation, to adjust feeding volume before 9:00.
8, induction breeding
At the beginning of 10 months, start draining gradually, every 5 ~ 7 days precipitation 1 time, each precipitation about 10cm, until late October, water level is down to circular groove (2) interior 50-60cm, exposes pond central authorities and encloses beach (3), induces close shrimp to enter cave breeding, survive the winter.
8, overwinter management
Maintain circular groove (2) 50-60cm water level whole winter, for the water level consumed, supplement in time, look fertile the degree of water body winter, select fine day suitably to apply fertilizer, the fertile degree that retaining ring ditch water quality is certain; After mid-December, enclose the thick 2-3cm straw of the upper laying in beach (3) on the ridge, slope and central authorities, carry out severe winter thermal insulation and cold resistance, and remove circular groove (2) accumulated snow and ice cube etc. in time.
9, seed rearing
The middle ten days and the last ten days March in next year, water temperature is progressively gone up, and first water inlet is flooded central authorities and enclosed beach (3) 20cm, along pond circular groove (2) surrounding and enclose beach (3) in central authorities and stack the organic manure become thoroughly decomposed; Enclose beach (3) along pond circular groove (2) surrounding and central authorities simultaneously and transplant waterweed, along with alive of pasture and water, add water gradually, until shoal depth of water 40-50cm, pasture and water area coverage 30-40%.Shrimp seed rearing is divided into three phases.
First stage: dusk every day and morning, when finding that a large amount of seed is movable on bank, start soya-bean milk of splashing, every mu of consumption 1kg soya bean, be increased to 3kg/ mu gradually later, depending on the number of hydroplankton amount, suitably can increase and decrease the feeding volume of soya-bean milk, break into soya-bean milk evenly to splash along pool side, every natural gift 8:00-9:00,12:00-13:00,18:00-19:00 splash 3 times.
Second stage: through the cultivation of about 10d, major part shrimp seedling specification reaches 1.5 ~ 2cm, soya-bean milk changes rough bean powder, the fish gruel of boiling, meat gruel gradually into, add water after mixing and enclose beach (3) evenly splash along breeding pond circular groove (2) surrounding shoal and central authorities, feeding volume accounted for and deposited 10 ~ 15% of the pool juvenile prawn weight day, and every natural gift 8:00-9:00,12:00-13:00,18:00-19:00 splash 3 times.
Phase III: when cray seed size reaches more than 3cm, feed can select the agricultural product such as soya bean (20%), corn (15%), wheat (15%), the flesh of fish, the mussel meat of collocation 50%, day feeding volume accounts for deposits 5 ~ 6% of pool shrimp body weight, enclose beach (3) along pond circular groove (2) surrounding shoal and central authorities evenly to throw something and feed, post sunset is thrown something and fed and is thrown something and fed for 1 time, and bamboo basket etc. can be utilized to arrange 2-3 feed table, next day checks residual bait situation, to adjust feeding volume before 9:00.
10, fish for
parent shrimp recapture in postpartum.april in next year early and middle ten days, running check juvenile prawn departs from the situation of parent, intake latter 10 days, when most of young leave close shrimp battalion live on one's own life time, every day at dusk arranges along breeding pond circular groove (2) surrounding the lobster basket that mesh is 2cm, put small fish in lobster basket and trap close shrimp, lobster basket two head above water, every day 22:00 ~ 24:00 and next day 5:00 ~ 6:00 respectively receive shrimp 1 time, juvenile prawn is put back to nursery pond continue cultivate, the close shrimp of recapture goes on the market in time, reduces close shrimp to the cannibalisation of juvenile prawn and reduce costs.
shrimp seedling is fished for.mid-April in next year starts, night every day encloses beach (3) along breeding pond circular groove (2) surrounding and central authorities to arrange mesh is 1.5cm lobster basket, small fish trapping shrimp seedling is put in lobster basket, lobster basket two head above water, played cage every 3 ~ 4 hours 1 time, large gauge shrimp seedling body being reached 4 ~ 5 centimetres is sold or point pool cultivation, and small dimension shrimp seedling is put back to nursery pond and continued to cultivate, to mid-May, shrimp seedling all catches out by the dry pool.

Claims (3)

1. a pond Procambius clarkii spring seedling mating system, it is characterized in that: comprise pond structure of modification, level sterilization, fertilising, pasture and water arrange, things concealed arrange, close shrimp throw in raise, induce breed, overwinter management, cultivation natural biological bait, shrimp seed rearing and catching method link
Described pond structure of modification is, change " pot bottom-shape " pond structure of conventional art into " circular groove+shoal " structure, for pond area 10 mu, aspect ratio 2:1, end circular groove along pond surrounding, utilize excavation pond sludge, raise central authorities enclose beach and strengthen the ridge, the pool gradient, make the wide 5-6m in circular groove upper end, lower bottom width 1.0-1.5m, dark 0.7-0.9m, slope than 1:3, ridge face width 1.5-2.0 rice, circular groove area accounts for pond gross area 24-27%;
Described preparation of ponds sterilization refers to, close shrimp is thrown in first 1 month, thoroughly removes in pond, the ridge, pool weeds and rubble, and pond adds water and floods central authorities and enclose beach 20cm, uses lump limeization slurry evenly to splash in full pond while hot, every mu of use quicklime 140-160 kilogram;
Described fertilising comprises three phases: the first stage is in latter 3 days of sterilization of cleaning up the pond, and encloses beach and to bank up the organic manure fully become thoroughly decomposed, every mu of usage amount 200-300 kilogram along circular groove surrounding and central authorities; After second stage is January in next year, select continuous fair weather, depending on circular groove water body fertilizer degree, suitably apply fertilizer, the fertile degree that retaining ring ditch water quality is certain; Phase III is mid or late March in next year, encloses beach and to bank up organic manure, every mu of usage amount 200-300 kilogram along circular groove surrounding and central authorities;
Described pasture and water arrange and comprise two stages: the first stage is, before close shrimp is thrown in, mainly arrange hydrilla verticillata and water peanut, in latter 7th day of sterilization of cleaning up the pond, arranges a branch of water peanut, utilize bamboo pole and rope to fix along circular groove surrounding every 10 meters; Central authorities enclose long 8-10cm is transplanted on beach hydrilla verticillata trophosome according to seeding row spacing 6m × 6m; Second stage is the middle ten days and the last ten days in March, selects fine day, and add water and flood central authorities and enclose beach 20cm, transplant a branch of waterweed along circular groove every 7-10 rice, central authorities enclose on beach, transplants waterweed trophosome according to seeding row spacing 6m × 6m; Pasture and water utilize 10g/m before transplanting 3bleaching powder to soak after 10 minutes the lower pool, to add that deep water level is paramount goes out to enclose beach 50-60cm gradually along with pasture and water live;
Described things concealed is arranged: utilize specification for 40cm × 30cm waveform potter's clay tile, be arranged at central authorities and enclose between the pasture and water on beach, and the long limit of tile lands vertical setting of types, arranges row's tile, tile marshalling, often arrange about 18-22 block every 10 meters;
Described close shrimp is thrown in and with raising is: the middle ten days and the last ten days in August, select physically fit, that duricrust bright red, body weight 25-40kg, abdominal muscles are full, gonad development is good close shrimp, throws in 60-100 kilogram, sex ration (3-4): 1 for every mu, and close shrimp uses 15g/m before throwing in 3liquor potassic permanganate soak 5-10 minute; Feed be by weight percentage for soya bean 18-22%, corn 14-16%, wheat 14-16%, collocation 50% the flesh of fish and mussel meat feed, rate 2-3% is raised in day throwing, and every day, post sunset was thrown something and fed 1 time;
Described induction breeding is: in the first tenday period of a month in October, temperature declines gradually, every 5 ~ 7 days precipitation 1 time, each precipitation about 10cm, until late October, water level is down to 50-60cm in circular groove, expose pond central authorities and enclose beach, progressively induce close shrimp enclose on Tang Geng slope and central authorities beach burrow breeding, survive the winter;
Described overwinter management is: after November, retaining ring ditch water level 50-60cm, supplements in time for the water level consumed, and central shoal keeps freezing solarization state; After the middle ten days in December, thick 2-3cm straw is laid on the ridge, slope and breeding shoal, carries out severe winter thermal insulation and cold resistance, and remove circular groove ice cube and accumulated snow in time;
Described cultivation natural bait biology is, next year, mid or late March, selected continuous fair weather, add water to flood and enclose beach 20cm, enclose beach along circular groove surrounding and central authorities to bank up the organic manure fully become thoroughly decomposed, every mu of usage amount 200-300 kilogram, cultivate natural bait biology and ingest for cray shrimp seedling after surviving the winter;
Described seed reinforced cultivating refers to, the middle ten days and the last ten days March in next year, water temperature is progressively gone up, along with alive of waterweed, to add to gradually to flood and enclose beach 40-50cm, except stacking the fertilizer cultivation natural bait biology confession cray of fully becoming thoroughly decomposed along pond circular groove surrounding and central shoal and ingesting, need to carry out feedstuff feeding in good time;
Described shrimp seed rearing is divided into three phases: the first stage is dusk every day and morning, when finding that a large amount of seed is movable on bank, start soya-bean milk of splashing, every mu of consumption 1kg soya bean, be increased to 3kg/ mu gradually later, depending on the number of hydroplankton amount, suitably can increase and decrease the feeding volume of soya-bean milk, break into soya-bean milk evenly to splash along pool side, every natural gift 8:00-9:00,12:00-13:00,18:00-19:00 splash 3 times; Second stage is that most of shrimp seedling body reaches 1.5 ~ 2cm, soya-bean milk changes rough bean powder, the fish gruel of boiling, meat gruel gradually into, add water after mixing and enclose beach along pond circular groove surrounding shoal and central authorities and evenly splash, feeding volume accounted for and deposited 10 ~ 15% of the pool juvenile prawn weight day, and every natural gift 8:00-9:00,12:00-13:00,18:00-19:00 splash 3 times; Phase III is that cray seed body is when reaching more than 3cm, feed can select soya bean 20%, corn 15%, wheat 15%, the flesh of fish, the mussel meat of collocation 50%, day feeding volume accounts for deposits 5 ~ 6% of pool shrimp body weight, enclose beach along pond circular groove surrounding shoal and central authorities evenly to throw something and feed, every day, post sunset was thrown something and fed 1 time;
Described catching method comprises parent's shrimp recapture in postpartum and shrimp seedling is fished for.
2. pond Procambius clarkii spring seedling mating system according to claim 1, it is characterized in that: described parent shrimp recapture in postpartum is, April in next year early and middle ten days, running check juvenile prawn departs from the situation of parent, intake latter 10 days, when most of young leave close shrimp battalion live on one's own life time, every day arranges along breeding pond surrounding the lobster basket that mesh is 2cm at dusk, put small fish and trap close shrimp, lobster basket two head above water, every day 22:00 ~ 24:00 and next day 6:00 ~ 7:00 respectively receive shrimp 1 time, juvenile prawn is put back to nursery pond continue cultivate.
3. pond Procambius clarkii spring seedling mating system according to claim 1, it is characterized in that: described shrimp seedling is fished for and is, late April in next year starts to take turns shrimping seedling, every day at dusk encloses beach along pond circular groove surrounding and central authorities, and to arrange mesh be 1.5cm lobster basket, place small fish trapping shrimp seedling, lobster basket two head above water, cage is played 1 time every 3 ~ 4 hours, large gauge shrimp seedling body being reached 4 ~ 5 centimetres is sold or point pool cultivation, small dimension shrimp seedling is put back to nursery pond and is continued to cultivate, to mid or late May, shrimp seedling all catches out by the dry pool.
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CN109952987A (en) * 2019-04-02 2019-07-02 长江大学 It is a kind of to control the pond culturing system and method that cray spring and summer autumn persistently emerges
CN110692461A (en) * 2019-09-23 2020-01-17 华中农业大学 Rice and shrimp co-culture planting and breeding method based on field ecological pond
CN110663605A (en) * 2019-10-12 2020-01-10 沈阳农业大学 Pond ecological breeding method for crayfishes suitable for northern areas
CN111084136A (en) * 2019-12-31 2020-05-01 镇江华优生态农业科技有限公司 Method for breeding large-size procambarus clarkii
CN111418532A (en) * 2020-05-06 2020-07-17 陈晓方 Method for layered breeding of crayfish fries in rice field

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Denomination of invention: Method for breeding procambarus clarkii spring seedlings in pond

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