CN104206329B - A kind of pond Procambrus clarkii spring Seedling mating system - Google Patents
A kind of pond Procambrus clarkii spring Seedling mating system Download PDFInfo
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- CN104206329B CN104206329B CN201410440459.3A CN201410440459A CN104206329B CN 104206329 B CN104206329 B CN 104206329B CN 201410440459 A CN201410440459 A CN 201410440459A CN 104206329 B CN104206329 B CN 104206329B
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Abstract
The present invention provides a kind of pond Procambrus clarkii spring Seedling mating system, by " pot bottom-shape " pond structure is changed into " circular groove+shoal " structure, is conducive to increasing burrow breeding area, pond of Procambarus clarkii and thoroughly freezes solarization, increase feedstuff feeding area etc.；The method induction Procambarus clarkii using progressively precipitation is burrowed and survives the winter, breeds, and utilizes Caulis et Folium Oryzae thermal insulation and cold resistance；Pasture and water are set in two stages, waveform potter's clay tile things concealed is set between pasture and water, increase Procambarus clarkii and perch area, and fresh and tender greenfeed is provided；Dividing three phases fertilising to cultivate sufficient natural bait biological, it is ensured that water fertilizer degree, not only improve pasture and water fast-growth, the sufficient high-quality natural biological bait of cultivation is ingested for Procambarus clarkii again；Above measure, have upper enhancing Procambarus clarkii body constitution, improve Procambarus clarkii overwintering survival rate, reduce shrimp Seedling kill each other probability, improve the advantage such as spring Seedling ratio and shrimp Seedling neat specification degree, to improve pond unit nursery yield and economic benefit significant.
Description
Technical field
The present invention relates to shrimps offspring breeding method, specifically set and relate to a kind of pond Procambrus clarkii spring Seedling mating system.
Background technology
Procambrus clarkii ( Procambarus clarkii) it is commonly called as freshwater crayfish, originate in north America region, nineteen twenty-nine introduces China through Japan, naturally multiplying and living and manually introducing a fine variety cultivation through decades, has 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, drives China Procambrus clarkii aquaculture industry fast-developing, and the demand of direct pull seed grows with each passing day.The pond Procambrus clarkii seed breeding technology that China is traditional, main employing pot bottom-shape pond structure；After October, using gradually draining to depth of water 50-60cm, induction Procambarus clarkii enters cave breeding, survives the winter；In 3-4 month in next year, when water temperature stability is more than 15 DEG C, disposably water is filled it up with, stimulate Procambarus clarkii to take young shrimp and go out entrance pond, cave, carry out seed rearing；Early April starts to take turns the listing of shrimping Seedling or point pool cultivation.The problem that this conventional art exists mainly has；One is existing pond structure, there is the area of burrowing of Procambarus clarkii and is limited to the defects such as the ridge, pool surrounding, area of throwing something and feeding is little, cannot thoroughly freeze at the bottom of the solarization pool；Two is to transplant water peanut after the Procambarus clarkii parent of employing throws in more, and pasture and water kind is single, and pasture and water are easily destroyed by Procambarus clarkii, often results in the problems such as nursery pond pasture and water are few, water quality is thin, moss grows；Three be conventional art frequently with mesh sheet, fragment of brick, old tire as things concealed, but it is relatively big to arrange randomness, and practicality is the strongest, four is that water table management of surviving the winter winter is not in place, is easily caused shrimp Seedling and goes out cave in advance, and easy chance weather of extremely trembling with fear is freezed to death, and causing shrimp Seedling specification great disparity big, autotomy phenomenon is serious；Additionally there is also some problems at induction breeding, the training aspect such as water and catching method, need Optimal improvements.Due to disadvantages described above; tradition Procambarus clarkii 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 Procambrus clarkii scale breeding; China there is no the enterprise of large-scale production shrimp Seedling so far; cultivation at present is still fished for based on field with shrimp Seedling, one of high-quality seed source bottleneck remaining China's Procambrus clarkii industry development.
Summary of the invention
Present invention seek to address that the defect of tradition 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, major part shrimp Seedling is made to leave parent in spring, carry out spring Seedling cultivation, a kind of pond Procambrus clarkii spring Seedling mating system is provided, the method is conducive to increasing Procambarus clarkii and burrows area, solarization is thoroughly frozen in pond, increase feedstuff feeding area, cultivate natural biological bait, increase Procambarus clarkii 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 is as follows:
The technical program include pond structure of modification, level sterilization, fertilising, pasture and water are arranged, things concealed is arranged, parent shrimp throw in raise, induction breeding, 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, as a example by pond area 10 mu, length-width 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 so that circular groove upper end width 5-6m, lower bottom width 1.0-1.5m, deep 0.7-0.9m, slope accounts for pond gross area 24-27% than 1:3, ridge face width 1.5-2.0 rice, circular groove area；
Described preparation of ponds sterilization is that parent 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 lime slurrying full pond while hot uniformly to splash, every mu of use quick lime 150 kilograms.
Described fertilising includes three phases.First stage is in latter 3 days of sterilization of cleaning up the pond, and encloses beach along circular groove surrounding and central authorities and banks up the organic manure fully become thoroughly decomposed, every mu of usage amount 200-300 kilogram；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 along circular groove surrounding and central authorities and banks up organic manure, every mu of usage amount 200-300 kilogram；Cultivate the sufficient natural bait of Procambarus clarkii biological, improve parent shrimp and the survival rate of shrimp Seedling, and can prevent winter-spring season moss from growing；
Described pasture and water arrange and include two stages.First stage be parent shrimp throw in before, principal set up hydrilla verticillata and water peanut, clean up the pond sterilization after the 7th day, along circular groove surrounding, a branch of water peanut is set every 10 meters, utilizes bamboo pole and rope to fix；Central authorities enclose beach and transplant the hydrilla verticillata trophosome of long 8-10cm according to seeding row spacing 6m × 6m.Second stage is the middle ten days and the last ten days in March, selects fine day, adds water and floods central authorities and enclose beach 20cm, transplants a branch of waterweed along circular groove every 7-10 rice, and central authorities enclose on beach, transplant waterweed trophosome according to seeding row spacing 6m × 6m；Pasture and water utilize 10g/m before transplanting3Bleaching powder soak the lower pool after 10 minutes, gradually add that deep water level is paramount to be gone out to enclose beach 50-60cm along with pasture and water live；
It is to utilize specification for 40cm × 30cm waveform potter's clay tile, be arranged between the pasture and water that central authorities enclose beach that described things concealed is arranged, and the long limit of tile lands vertical setting of types, arranges row's tile, tile marshalling every 10 meters, often arranges about about 20 pieces；
Described parent shrimp is thrown in and with raising is, the middle ten days and the last ten days in August, selects close shrimp physically fit, that duricrust bright red, body weight 25-40kg, abdominal muscles are full, gonad development is good, throws in 60-100 kilogram for every mu, sex ration (3-4): 1, and parent shrimp uses 15g/m before throwing in3Potassium permanganate solution soak 5-10 minute.Feedstuff can be selected for the agricultural product such as Semen Glycines (20%), Semen Maydis (15%), Semen Tritici aestivi (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, in the first tenday period of a month in October, temperature is gradually reduced, 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 induction parent shrimp enclose on Tang Geng slope and central authorities beach burrow breeding, survive the winter；
Described overwinter management is, after November, and retaining ring ditch water level 50-60cm, the water level consumed is supplemented in time, central authorities shoal keeps freezing solarization state；After December the middle ten days, the ridge, slope and breeding shoal are laid thick 2-3cm Caulis et Folium Oryzae, carry 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 Procambarus clarkii 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 be gradually added to flood and enclose beach 40-50cm, in addition to stacking, along pond circular groove surrounding and central authorities shoal, the fertilizer cultivation natural bait biology fully become thoroughly decomposed and ingesting for Procambarus clarkii, needing to carry out feedstuff feeding, shrimp seed rearing is broadly divided into three phases in good time；
Further, the described first stage is dusk every day and morning, when finding a large amount of seeds in bank activity, start bean milk of splashing, every mu of consumption 1kg Semen Glycines, be gradually increased to 3kg/ mu later, number depending on hydroplankton amount, can suitably increase and decrease the feeding volume of bean milk, break into bean milk and uniformly 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 reaches 1.5～2cm for major part shrimp Seedling body length, bean milk gradually changes rough Semen Glycines powder into, boil minced fish, meat paste, add water mixing tailing edge pond circular groove surrounding shoal and central authorities enclose beach and uniformly splash, day, feeding volume accounted for depositing the 10～15% of pool juvenile prawn weight, 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 Procambarus clarkii seed body length is when reaching more than 3cm, feedstuff can be selected for the agricultural product such as Semen Glycines (20%), Semen Maydis (15%), Semen Tritici aestivi (15%), the flesh of fish of collocation 50%, mussel meat, day feeding volume accounts for deposits the 5～6% of pool shrimp body weight, enclosing beach uniformly throw something and feed along pond circular groove surrounding shoal and central authorities, every day, post sunset was thrown something and fed 1 time, concrete day the visual weather of feeding volume, ingest situation, residual bait etc. of water quality, shrimp Seedling take the circumstances into consideration increase and decrease；
Described catching method includes parent shrimp recapture in puerperal and fishing for young shrimps.
Further, described parent shrimp recapture in puerperal 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 germling leave parent shrimp battalion live on one's own life time, dusk every day edge is bred pond surrounding and is arranged the lobster basket that mesh is 2cm, put small fish trapping parent shrimp, lobster basket two head above water, every day, 22:00～24:00 and 6:00～7:00 on next day respectively received shrimp 1 time, juvenile prawn is put back to nursery pond and continues to cultivate, the close shrimp of recapture lists in time, reduces parent shrimp and to the cannibalisation of juvenile prawn and reduces cost.
Further, described fishing for young shrimps is, late April in next year starts to take turns shrimping Seedling, and it is 1.5cm lobster basket that every day enclose beach to arrange mesh along pond circular groove surrounding and central authorities at dusk, places small fish trapping shrimp Seedling, lobster basket two head above water, playing cage 1 time every 3～4 hours, sold or point pool cultivation up to the big specification shrimp Seedling of 4～5 centimetres by body, small dimension shrimp Seedling is put back to nursery pond and is continued to cultivate, to mid or late May, shrimp Seedling is all caught out by the dry pool.
The inventive method be conducive to increasing Procambarus clarkii burrow area, pond thoroughly freeze solarizations, increase feedstuff feeding area, cultivate natural biological bait, increase Procambarus clarkii sheltered situation, pasture and water are arranged, improve 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 the accompanying drawings.
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 go to the bottom, 8, ditch depth, 9, slope, 10, Tang Geng.
Detailed description of the invention
1, pond structure of modification
Shown in accompanying drawing 1, change " pot bottom-shape " pond structure of conventional art into " circular groove+shoal " structure, by nursery pond (1) area be 10 mu, as a example by length-width ratio 2:1, along pond surrounding excavation circular groove (2), utilize excavation pond sludge, raise and tamp the ridge, the pool so that ditch upper port width 6m(6), 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 accounts for the pond gross area about 26% than 1:3, circular groove (2) area；Utilizing thick plastic sheeting to arrange to prevent escaping wall, anti-thin film of escaping imbeds 15-20 centimetre, 40 centimetres above ground level of top, and perpendicular to the ground；Water inlet arranges 80 mesh double deck screen tulle cloth, and discharge outlet arranges 40 mesh close eye guard.
2, tan by the sun
At the beginning of 7 months, select fair weather, drain water, tan by the sun 10-15 days so that in polygon at the bottom of pond.
3, clean up the pond sterilization
Mid-July, remove in nursery pond (1), the ridge, pool weeds and rubble, nursery pond (1) water filling floods central authorities and encloses (3) 20 centimetres of beach, utilizes lump lime thoroughly to clean up the pond sterilization, usage amount per mu about 150 kilograms, thoroughly kills finless eel and mud, snakeheaded fish and small fish etc..
3, fertilising
After lime disinfection 3 days, use organic manure 200-300 kilogram fully become thoroughly decomposed as base manure, enclose beach (3) fixed point along pond circular groove (2) surrounding and central authorities and bank up for every mu, water quality of fostering and apply fertilizer.
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；It is spaced one pasture and water (4) water peanut of 7～10 meters of plantations at pond circular groove (2), fixes with bamboo pole and rope；After spring in next year adds water, transplant pasture and water (4) waterweed in central authorities shoal (3) and circular groove (2), along with pasture and water work, gradually add deep water level to 50-60cm；Pasture and water use 10g/m before transplanting3Bleaching powder (effective chlorine 30%) soaking disinfection 10 minutes, transplants after cleaning with clear water.
5, things concealed is arranged
Utilizing specification for 40cm × 30cm waveform potter's clay tile (6), 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 every 10 meters, often arranges about about 20 pieces.
6, parent shrimp is thrown in
Mid-August, pond pasture and water (4) area coverage reaches 30-40%, carries out parent shrimp and puts in a suitable place to breed, and parent shrimp is chosen from resourceful lake, it is desirable to physically fit, duricrust bright red, body weight 25-40kg, abdominal muscles are full, gonad development good；Input per mu 60-100 kilogram, sex ration (3-4): 1；Through the close shrimp of transport, shrimp body of uniformly splashing with water, it is spaced 4～5 minutes, splashes once, continuous 3～4 times, allow it adapt to 15～20 minutes, allow parent shrimp fully absorb water, balance the temperature difference；Parent shrimp uses 15g/m before throwing in3Potassium permanganate solution soak 5-10 minute, be poured on gently on slope, pond, allow it climb into voluntarily in water.
7, parent shrimp rearing
Parent's shrimp feed can be selected for Semen Glycines (20%), Semen Tritici aestivi (15%), Semen Maydis (15%), mussel meat, the flesh of fish (50%), soak 12 hours after Semen Glycines, Semen Tritici aestivi, Semen Maydis mixing, throw something and feed with after mussel, flesh of fish mixing, day feeding volume accounts for the 2-3% depositing pool shrimp body weight, it is 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 uniformly throw something and feed, available bamboo basket etc. arranges 2-3 feed table, next day checks residual bait situation before 9:00, in order to adjust feeding volume.
8, induction breeding
At the beginning of 10 months, starting gradually draining, 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, is exposed pond central authorities and enclose beach (3), and induction parent shrimp enters cave breeding, survives the winter.
8, overwinter management
Maintaining circular groove (2) 50-60cm water level whole winter, for the water level consumed, supplement in time, winter regards the fertile degree of water body, selects 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 Caulis et Folium Oryzae 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 progressively gos 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, gradually add water, 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 a large amount of seeds in bank activity, start bean milk of splashing, every mu of consumption 1kg Semen Glycines, it is gradually increased to 3kg/ mu later, depending on the number of hydroplankton amount, can suitably increase and decrease the feeding volume of bean milk, breaking into bean milk uniformly 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, bean milk gradually changes rough Semen Glycines powder into, boil minced fish, meat paste, the mixing tailing edge that adds water breeds pond circular groove (2) surrounding shoal and central authorities enclose beach (3) and uniformly splash, day, feeding volume accounted for depositing the 10～15% of pool juvenile prawn weight, and every natural gift 8:00-9:00,12:00-13:00,18:00-19:00 splash 3 times.
Phase III: when Procambarus clarkii seed size reaches more than 3cm, feedstuff can be selected for the agricultural product such as Semen Glycines (20%), Semen Maydis (15%), Semen Tritici aestivi (15%), the flesh of fish of collocation 50%, mussel meat, day feeding volume accounts for deposits the 5～6% of pool shrimp body weight, enclosing beach (3) along pond circular groove (2) surrounding shoal and central authorities uniformly to throw something and feed, post sunset is thrown something and fed 1 time and is thrown something and fed, and available bamboo basket etc. arranges 2-3 feed table, next day checks residual bait situation before 9:00, in order to adjust feeding volume.
10, fish for
Parent shrimp recapture in puerperal 。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 germling leave parent shrimp battalion live on one's own life time, at dusk the lobster basket that mesh is 2cm is set along breeding pond circular groove (2) surrounding every day, small fish trapping parent shrimp is put in lobster basket, lobster basket two head above water, every day, 22:00～24:00 and 5:00～6:00 on next day respectively received shrimp 1 time, juvenile prawn is put back to nursery pond and continues to cultivate, the close shrimp of recapture lists in time, reduces parent shrimp and to the cannibalisation of juvenile prawn and reduces cost.
Fishing for young shrimps.Mid-April in next year starts, night every day along breed pond circular groove (2) surrounding and central authorities enclose beach (3) to arrange mesh be 1.5cm lobster basket, lobster basket is put small fish trapping shrimp Seedling, lobster basket two head above water, playing cage 1 time every 3～4 hours, sold or point pool cultivation up to the big specification shrimp Seedling of 4～5 centimetres by body, small dimension shrimp Seedling is put back to nursery pond and is continued to cultivate, to mid-May, shrimp Seedling is all caught out by the dry pool.
Claims (3)
1. a pond Procambrus clarkii spring Seedling mating system, it is characterized in that: include pond structure of modification, level sterilization, fertilising, pasture and water are arranged, things concealed is arranged, parent shrimp throw in raise, induction breeding, 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+central authorities enclose beach " structure, pond area 10 mu, length-width 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 so that circular groove upper end width 5-6m, lower bottom width 1.0-1.5m, deep 0.7-0.9m, slope accounts for pond gross area 24-27% than 1:3, ridge face width 1.5-2.0 rice, circular groove area；Preparation of ponds sterilization refers to, parent 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 lime slurrying full pond while hot uniformly to splash, every mu of use quick lime 140-160 kilogram；
Described fertilising includes three phases:
First stage is in latter 3 days of sterilization of cleaning up the pond, and encloses beach along circular groove surrounding and central authorities and banks up the organic manure fully become thoroughly decomposed, every mu of usage amount 200-300 kilogram；
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 along circular groove surrounding and central authorities and banks up organic manure, every mu of usage amount 200-300 kilogram；
Described pasture and water arrange and include two stages:
First stage be parent shrimp throw in before, principal set up hydrilla verticillata and water peanut, clean up the pond sterilization after the 7th day, along circular groove surrounding, a branch of water peanut is set every 10 meters, utilizes bamboo pole and rope to fix；Central authorities enclose beach and transplant the hydrilla verticillata trophosome of long 8-10cm according to seeding row spacing 6m × 6m；
Second stage is the middle ten days and the last ten days in March, selects fine day, adds water and floods central authorities and enclose beach 20cm, transplants a branch of waterweed along circular groove every 7-10 rice, and central authorities enclose on beach, transplant waterweed trophosome according to seeding row spacing 6m × 6m；Pasture and water utilize 10g/m before transplanting3Bleaching powder soak the lower pool after 10 minutes, along with pasture and water live gradually add deep water level paramount go out central authorities enclose beach 50-60cm；
Described things concealed is arranged so that and utilizes specification for 40cm × 30cm waveform potter's clay tile, is arranged between the pasture and water that central authorities enclose beach, and the long limit of tile lands vertical setting of types, arranges row's tile, tile marshalling, often row's 18-22 block every 10 meters；
Described parent shrimp is thrown in and with raising is: the middle ten days and the last ten days in August, selects close shrimp physically fit, that duricrust bright red, body weight 25-40kg, abdominal muscles are full, gonad development is good, throws in 60-100 kilogram for every mu, sex ration 3-4:1, and parent shrimp uses 15g/m before throwing in3Potassium permanganate solution soak 5-10 minute；Feedstuff is to feed for Semen Glycines 18-22%, Semen Maydis 14-16%, Semen Tritici aestivi 14-16%, the flesh of fish of collocation 50% and mussel meat by weight percentage, and 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 is gradually reduced, every 5～7 days precipitation 1 time, precipitation about 10cm every time, until late October, water level is down to 50-60cm in circular groove, expose pond central authorities and enclose beach, progressively induction parent 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 authorities enclose beach and keep freezing solarization state；After December the middle ten days, enclose on the ridge, slope and central authorities and on beach, lay thick 2-3cm Caulis et Folium Oryzae, carry 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 and flood central authorities 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 Procambarus clarkii shrimp Seedling after surviving the winter；
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, water is gradually added to floods central authorities and encloses beach 50-60cm, in addition to enclosing beach along pond circular groove surrounding and central authorities and stacking the organic manure that fully becomes thoroughly decomposed and cultivate natural bait biology and ingest for Procambarus clarkii, need to carry out feedstuff feeding in good time；
Described shrimp seed rearing is divided into three phases:
First stage is dusk every day and morning, when finding a large amount of seeds in bank activity, start bean milk of splashing, every mu of consumption 1kg Semen Glycines, be gradually increased to 3kg/ mu later, depending on hydroplankton amount number, suitably increase and decrease the feeding volume of bean milk, breaking into bean milk uniformly 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 reaches 1.5～2cm for major part shrimp Seedling body length, bean milk gradually changes rough Semen Glycines powder into, boil minced fish, meat paste, add water mixing tailing edge pond circular groove surrounding shoal and central authorities enclose beach and uniformly splash, feeding volume accounted for and deposited the 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 Procambarus clarkii seed body length is when reaching more than 3cm, feedstuff select Semen Glycines 20%, Semen Maydis 15%, Semen Tritici aestivi 15%, collocation 50% the flesh of fish, mussel meat, day feeding volume account for and deposit the 5～6% of pool shrimp body weight, enclosing beach uniformly throw something and feed along pond circular groove surrounding shoal and central authorities, every day, post sunset was thrown something and fed 1 time；Described catching method includes parent shrimp recapture in puerperal and fishing for young shrimps.
Pond Procambrus clarkii spring Seedling mating system the most according to claim 1, it is characterized in that: described parent shrimp recapture in puerperal 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 germling leave parent shrimp battalion live on one's own life time, dusk every day edge is bred pond surrounding and is arranged the lobster basket that mesh is 2cm, put small fish trapping parent shrimp, lobster basket two head above water, every day, 22:00～24:00 and 6:00～7:00 on next day respectively received shrimp 1 time, juvenile prawn is put back to nursery pond and continues to cultivate.
Pond Procambrus clarkii spring Seedling mating system the most according to claim 1, it is characterized in that: described fishing for young shrimps is, late April in next year starts to take turns shrimping Seedling, it is 1.5cm lobster basket that every day enclose beach to arrange mesh along pond circular groove surrounding and central authorities at dusk, place small fish trapping shrimp Seedling, lobster basket two head above water, cage is played 1 time every 3～4 hours, body is sold or point pool cultivation up to the big specification shrimp Seedling of 4～5 centimetres, small dimension shrimp Seedling is put back to nursery pond and is continued to cultivate, to mid or late May, shrimp Seedling is all caught out by the dry pool.
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Denomination of invention: Method for breeding procambarus clarkii spring seedlings in pond Effective date of registration: 20180123 Granted publication date: 20160831 Pledgee: Anhui Mingguang rural commercial bank Limited by Share Ltd Pledgor: Mingguang Yongyan Aquatic Group Corporation Registration number: 2018340000025 |
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