CN105104262A - Method for cultivating large crab varieties in earth pond greenhouse - Google Patents

Method for cultivating large crab varieties in earth pond greenhouse Download PDF

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Publication number
CN105104262A
CN105104262A CN201510525136.9A CN201510525136A CN105104262A CN 105104262 A CN105104262 A CN 105104262A CN 201510525136 A CN201510525136 A CN 201510525136A CN 105104262 A CN105104262 A CN 105104262A
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crab
water
pond
breed
place
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CN105104262B (en
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郭闯
陈焕根
徐许平
陈光芸
王明宝
盖建军
张敏
邹宏海
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Fishery Technology Popularization Center Of Jiangsu Province
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Fishery Technology Popularization Center Of Jiangsu Province
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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 cultivating large crab varieties in an earth pond greenhouse. Greenhouse temperature is utilized for raising water temperature to a value suitable for river crabs to grow, crab variety intensifying cultivation is carried out from the last ten-day period of January, reasonable cultivation controlling measures such as pond clearing, grass planting, water cultivating, fry stocking, fodder throwing and disease control are adopted, the crab varieties are cultivated in the greenhouse to the first ten-day period of May, and the crabs are transferred to a commercial crab cultivation outer pond to carry out large commercial crab cultivation after being caught through a ground bamboo cage. The crab variety cultivation method has the advantages that as the greenhouse temperature is utilized, the crab varieties can begin to grow in about 50 days ahead of time, the specification of each crab can be 70-90 g when stocked to the commercial crab cultivation pond, the ability of the crab varieties to resist environment stress is high, and the survival rate is large; a temporary crab variety cultivation area does not need to be arranged in the commercial crab cultivation pond, and the good foundation is laid for commercial crab cultivation and production in the later period; the number and the quality of the crab varieties stocked to the outer pond are known, fodder can be thrown reasonably, and the fodder utilization rate can be remarkably increased.

Description

A kind of native pond green house cultivates the method for large gauge crab kind
Technical field
The invention belongs to technical field of aquaculture, specifically cultivate the ecological cultivation method of large gauge crab kind about native pond green house.
Background technology
Culture of Chinese mitten crab is the first pillar industry of Jiangsu fresh water fishery.In recent years, by the expansion of culture of Chinese mitten crab area and the impact of the factor such as breeding production cost goes up year by year, commodity crab concentrates on the mid-autumn, go on the market after National Day, commodity crab price is low, and culture of Chinese mitten crab produces trend small profits, and the culture of Chinese mitten crab industry ability to ward off risks weakens.The commodity crab pond culture of the current Yangtze river basin is generally at the beginning of late Febuary or 3 months, carry out crab kind put in a suitable place to breed, the Xie Zhongzanyang district accounting for 1/10 ~ 1/5 of large pool area is set in the middle of pond, treat that the pasture and water germination and growth of planting on the large pool is to covering more than 1/2 of face, the whole pool mid-May, and the spiral shell of putting in a suitable place to breed is when breeding some, Xie Zhongzanyang district mesh sheet is removed and puts crab kind in a suitable place to breed and be bred as to the large pool, by the end of October or initial acquisition commodity crab listing in November sell.How to pass through to optimize, adjust culture of Chinese mitten crab pattern and ecological culturex, under the prerequisite of the incubation specification and good coefficient of condition that ensure commodity crab, make the commodity crab golden period listing that river crab is sold on the mid-autumn, National Day of forming, cater to the market demand, the first chance seized, increasing the culture benefit of the fishman people, is the important topic that Fishery technical extension institution and aquatic products scientific research department person skilled face.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention proposes the ecological cultivation method that a kind of native pond green house cultivates large gauge crab kind, canopy temperature is utilized water temperature to be brought up to the temperature of river crab suitable growth, crab kind reinforced cultivating is carried out from late January, take reasonably to clean up the pond, plant grass, the cultivation management and control measure such as training water, seed are put in a suitable place to breed, feedstuff feeding, disease control, crab kind cultivated in booth to the first tenday period of a month in May, cage is transferred to the outer pool of commodity crab cultivation and carries out the cultivation of large gauge commodity crab after catching.This Growth pattern has compared following advantage with existing crab kind stocking model: 1, utilize canopy temperature that crab kind can be made to do sth. in advance within about 50 days, to open food and grow and do sth. in advance shell 2 times, put in a suitable place to breed to specification during commodity crab cultivating pool can reach 70g/ only ~ 90g/ only, crab kind environment resistant stress ability is strong, and survival rate is high; 2, commodity crab cultivating pool does not need to arrange Xie Zhongzanyang district again, can have ample time, sterilization is carried out in space, plant grass, throw the cultivation such as spiral shell, rich water measure, especially the growth of pasture and water provides plenty of time, for later stage commodity crab breeding production lays good basis; 3, know the quality and quantity of putting in a suitable place to breed to outer pool crab kind, feed of can reasonably throwing something and feeding, can significantly improve efficiency of feed utilization.In addition, utilize this Growth pattern, carry out the cultivation of large gauge commodity crab and have more operability, under ensureing that commodity crab is bred as the prerequisite of specification (male crab more than 250g, female crab more than 150g) and good coefficient of condition, can ahead of time to the golden period listing that National Day, the Mid-autumn Festival, commodity crab was sold, price is higher than 40% ~ 50% of same specification commodity crab price under existing culture of Chinese mitten crab pattern.Concrete scheme is as follows:
Native pond green house cultivates a method for large gauge crab kind, comprises step:
1) native pond green house is built
Booth area is advisable with 46m × 9m ~ 50m × 9m, and ceiling covers 10 White plastic film;
2) native pond condition
Bottom material of pond for breeding is loam, the dark 120cm ~ 150cm in pond, and the water yield of receiving is 60cm ~ 80cm; Slope is than 1:1.2 ~ 1.5; Have abundant water resources, water quality meets the regulation requirement of NY5361;
3) crab kind put in a suitable place to breed before preparation
3-1) clean up the pond
End of the year prior year lays Chi Po, rebuilds with 40 order ~ 60 order polyethylene screen cloths, every 667m 2with the bleaching powder 5kg ~ 10kg containing 30% ~ 35% available chlorine, carry out full pool spilling head;
3-2) intake, plant grass, training water
Put crab kind in a suitable place to breed at the beginning of this before, annotate new water to the water surface apart from 50cm ~ 60cm at the bottom of pond with 80 order ~ 100 order silk cover filterings; Plantation after water plants sterilization; Amino acid biological fertilizer is adopted to carry out training water;
3-3) seed is put in a suitable place to breed
At the beginning of this, when canopy temperature 10 DEG C ~ 30 DEG C or water temperature 8 DEG C ~ 14 DEG C, put crab kind in a suitable place to breed; Before putting in a suitable place to breed, crab kind is carried out disinfection; Every 667m 2put the crab kind 10000 ~ 12000 of 180/kg ~ 240/kg in a suitable place to breed;
To put in a suitable place to breed after crab kind 2 months, in Tu Chi greenhouse, put silver carp kind and the Variegated of every tail 0.5kg ~ 0.75kg in a suitable place to breed, every 667m 2put silver carp kind 10 tail ~ 15 tail in a suitable place to breed, Variegated 5 tail ~ 10 tail;
4) feeding and management
4-1) regulating and controlling water quality
According to canopy temperature, water temperature and water quality situation, carry out rich water, regulating water quality with amino acid biological fertilizer or other biologic product, ensure the fertilizer of water quality in canopy in whole Growth process, work, tender, refreshing;
4-2) feedstuff feeding
A, in canopy water temperature higher than 10 DEG C lower than 16 DEG C time, feedstuff feeding amount, by 3% ~ 4% of crab kind body weight, is thrown something and fed 2 times day, respectively throws something and feeds morning and afternoon 1 time, and raise 28% ~ 32% of total amount throw something and feed by throwing in the morning, and surplus is thrown something and fed afternoon;
In the manufactured feed in this stage, comprise according to mass percent: crude protein 32% ~ 38%, raw fiber 7.9% ~ 8.2%, crude fat 2.8% ~ 3.3%, coarse ash 17% ~ 19%, moisture are no more than 12%, total phosphorus 0.9% ~ 1.2%, calcium 1.5% ~ 4.5%, lysine 0.7% ~ 1.0%, salt 2.7% ~ 3.2%, surplus are binder, particle diameter 1.2mm ~ 1.6mm;
B, after the 1st the neat shell of crab kind, feedstuff feeding amount, by 7% ~ 8% of crab kind body weight, is thrown something and fed 2 times day, respectively throws something and feeds morning and afternoon 1 time, and raise 28% ~ 32% of total amount by throwing and throw something and feed in the morning, and surplus is thrown something and fed afternoon;
In the manufactured feed in this stage, comprise according to mass percent: crude protein 30% ~ 36%, raw fiber 7.9% ~ 8.2%, crude fat 2.8% ~ 3.3%, coarse ash 17% ~ 19%, moisture are no more than 12%, total phosphorus 0.9% ~ 1.2%, calcium 1.5% ~ 4.5%, lysine 0.7% ~ 1.0%, salt 2.7% ~ 3.2%, surplus are binder, particle diameter 1.6mm ~ 1.8mm;
The adhesive used in above-mentioned a, b adopts conventional binder in aquatic feeds just passable, and there is no particular restriction and requirement.
4-3) disease control
Within every 7 days ~ 10 days, alternately use the generation of microorganism formulation and resisting stress preparation prevention crab kind disease; When the small particles of macroscopic suspension appears in water body in canopy, desinsection must be carried out; Oxygenation and venting practice must be implemented after desinsection;
4-4) daily management
Perform green house personal management system, strictly follow wheel changing shifts and inspection record program, note Changes in weather, regulate canopy temperature in time, conscientiously observation crab kind ingest, active situation and variation of water, conscientiously carry out the daily management mission of warm canopy;
5) crab kind is fished for, is moved the pool
On May, the middle ten days, when water temperature continuous a couple of days is stabilized in 16 DEG C ~ 18 DEG C, with cage catch green house cultivate crab kind and put in a suitable place to breed to the outer pool; Dry pond catch put in a suitable place to breed in warm canopy silver carp, Variegated putting in a suitable place to breed to the outer pool.
Preferably:
Step 1) in, booth build hidding and sunny side place in, and single pond is east-west; Booth is steel-tube construction;
Step 2) in, Tu Chi two ends respectively stay one, arrange brick mixing cement floor passage in the middle of native pond; Tu Chi is equipped with bar type micro-hole oxygenation facility and culvert system.
Step 3-1) in, adopt dry method to carry out full pool spilling head;
Step 3-2) time be step 3-3) first 10 days;
Step 3-2) in, the water plants of employing is that sterilization method is for be soaked in 30 ~ 50g/m water peanut by water peanut 3the chlorine water body 20min ~ 30min of available chlorine, plantation density is evenly plant by 40% ~ 50% of pond area; Every 667m 2, every 1 meter of depth of water amino acid Fertilizer water paste 1.5kg ~ 2.0kg carries out rich water;
Step 3-3) in, the method for crab kind sterilization crab kind is placed in the liquor potassic permanganate soaking disinfection 15min of 10mg/L ~ 15mg/L.
Step 4-1) in, the method for water quality adjustment is: every 667m 2, every 1 meter of depth of water base acid Fertilizer water paste 1.5kg ~ 2kg and probiotic 0.30kg carries out rich water; Keep water transparence at 25cm ~ 30cm, water colour is yellow green;
When crab kind there is fragmentary shell and water temperature 16 DEG C ~ 18 DEG C time, every 667m 2, every 1 meter of depth of water splashes ion pair calcium 250ml ~ 300ml, promotes the neat shell of crab kind;
Step 4-2) in, 1 ~ 2 food platform is set in native pond, is used for checking the rich apology of bait, and timely adjustment feeding volume, eat food in 1.5h ~ 2h complete;
Step 4-3) in, every 667m 2, every 1 meter of depth of water vivocon-S250ml ~ 300ml and the very resisting stress VC+VE0.30kg ~ 0.40kg that detoxifies carry out crab disease prevention; Every 667m 2, ivermectin solution 10ml ~ 15ml after every 1 meter of depth of water thin up kills zooplankton in water body.
In step 5, crab kind is at green house through cultivating, and the crab kind of 80% ~ 90% only grows to 70g/ ~ 90g/, and the crab kind rate of recapture can reach 80% ~ 85%, every 667m 2crab kind 650kg ~ 850kg can be caught, silver carp, the Variegated rate of recapture 95%100%, only all increase weight about 15% ~ 20%.
Step 4-2) in feedstuff feeding:
In a stage, in the manufactured feed in this stage, comprise according to mass percent: crude protein 36%, raw fiber 8%, crude fat 3%, coarse ash 18%, moisture 12%, total phosphorus 1%, calcium 1.5% ~ 4.5%, lysine 0.8%, salt 3%, surplus are binder, particle diameter 1.2mm;
In b-stage, in the manufactured feed in this stage, comprise according to mass percent: crude protein 32%, raw fiber 8%, crude fat 3%, coarse ash 18%, moisture 12%, total phosphorus 1%, calcium 1.5% ~ 4.5%, lysine 0.8%, salt 3%, surplus are binder, particle diameter 1.6mm.
In practice, following specific product can be adopted:
Step 3-2) intake, plant in grass, training water:
Rich water is carried out by Nanjing beautiful Supreme Being's Si biotechnology Co., Ltd amino acid Fertilizer water paste;
Step 4-1) in regulating and controlling water quality:
Rich water is carried out with the beautiful Supreme Being's Si probiotic of the beautiful Supreme Being's Si amino acid Fertilizer water paste in Nanjing and Nanjing; The neat shell of crab kind is promoted with the remarkable biological Co., Ltd in Hainan ion pair calcium;
Step 4-3) in disease control:
The prevention of crab disease is carried out with beautiful Supreme Being Si in Jiaxing Ke Rui bio tech ltd vivocon-S and the Nanjing very resisting stress VC+VE that detoxifies; Zooplankton in water body is killed with Shanxi Kang Jie pharmaceutcal corporation, Ltd ivermectin solution (after thin up 2000 times) 10ml ~ 15ml.
Accompanying drawing explanation
Fig. 1 is the present embodiment contour structures schematic diagram;
Fig. 2 is the present embodiment interior schematic diagram;
In figure: booth 1, native pond 2, arch tube 3, light-passing plastic film 4, pull bar 5, center pillar 6, pier 7, press mold press bar 8, film-pressing line 9, inclined support bar 10, reinforced pole 11, passage 12, tiltedly reinforced pole 13.
Embodiment
Below in conjunction with embodiment, the present invention is further described as follows:
Native pond green house cultivates a method for large gauge crab kind, comprises step:
1) native pond green house is built
Hidding and sunny side place is built in booth choosing in, and Tu Chi is east-west, is conducive to absorbing of luminous energy.The area of Tu Chi is (46 ~ 50) m × 9m (this example adopts 48 × 9m), and steel-tube construction, ceiling covers 10 White plastic film, and two ends, pond respectively stay one, arranges brick mixing cement floor passage in the middle of native pond.Tu Chi is equipped with micro-pore oxygenation facility and culvert system.
2) native pond condition
Bottom material of pond for breeding is loam, the dark 120cm ~ 150cm in pond, can receive water 60 ~ 80cm.Slope is than 1:1.2 ~ 1.5 (the slope ratio of this example is 1:1.2).Have abundant water resources, water quality meets the regulation requirement of NY5361;
3) crab kind put in a suitable place to breed before preparation
3-1) clean up the pond
December prior year lays Chi Po, rebuilds with 40 order ~ 60 order polyethylene screen cloths, every 667m 2carry out full pond dry method with 5kg ~ 10kg bleaching powder (available chlorine of 30 ~ 35%) and splash (being preferably 8kg, 33% available chlorine);
3-2) intake, plant grass, training water
In early January, to annotate new water 50 ~ 60cm with 80 ~ 100 order silk cover filterings; For avoiding harmful organisms to enter Tu Chi with the water peanut preparing plantation, above-mentioned water peanut is soaked in 30 ~ 50g/m 3available chlorine water body to carry out disinfection 20min ~ 30min, and to plant by 40% ~ 50% of pond area; Every 667m 2carry out rich water with the colza cake 12kg ~ 15kg of complete fermentation, the every 40kg of above-mentioned colza cake adds 1kg Bacillus acidi lactici biologic product and ferments;
3-3) seed is put in a suitable place to breed
In mid-January, when canopy temperature 10 DEG C ~ 30 DEG C, water temperature 8 DEG C ~ 14 DEG C, the crab kind can choosing ChangJiang River production is put in a suitable place to breed, before putting in a suitable place to breed, crab kind is placed in the liquor potassic permanganate soaking disinfection 10min of 10-15mg/L; Every 667m 2put crab kind 10000 ~ 12000 (preferably every 667m of 180/kg ~ 240/kg in a suitable place to breed 2putting crab kind in a suitable place to breed is 200/kg, 10000), crab kind requires neat specification, and step is complete, and physique is healthy and strong, creeps active, anosis without wound; Early March, puts silver carp, the bighead fingerling regulating water quality of every tail 0.5kg ~ 0.75kg in a suitable place to breed, every 667m in soil pond, greenhouse 2put silver carp kind 10 tail ~ 15 tail in a suitable place to breed, Variegated 5 tail ~ 10 tail;
4) feeding and management
4-1) regulating and controlling water quality
According to canopy temperature, water temperature and water quality situation, take the circumstances into consideration to use amino acid rich water element to wait bio-fertilizer to carry out rich water, auxiliary use photosynthetic bacteria, active nitrifying bacteria, the removing toxic substances very preparation regulating water quality such as (resisting stress VC+VE), sodium humate, ensure the fertilizer of water quality in canopy in whole Growth process, work, tender, refreshing; The method of carrying out water quality adjustment is: every 667m 2execute preparation such as water transfer such as amino acid rich water element 0.8kg ~ 1.2kg and photosynthetic bacteria etc. and carry out rich water, keep water transparence at 25cm ~ 30cm, water colour is yellow green; When canopy temperature 22 DEG C ~ 24 DEG C (water temperature 16 DEG C ~ 18 DEG C), use ionized calcium and can impel the shell of crab kind the 1st batch; Time more than canopy temperature 26 DEG C (water temperature 20 DEG C), carry out water disinfection by 10% povidone iodine; Sterilize latter 5 days ~ 7 days, full pool spilling head bacillus biologic product;
4-2) feedstuff feeding
Before canopy temperature is lower than 22 DEG C (water temperature is lower than 16 DEG C), feedstuff feeding amount, by 3% ~ 4% of crab kind body weight, is thrown something and fed 1 ~ 2 time day, respectively throws something and feeds morning and afternoon 1 time, and raise 30% of total amount by throwing and throw something and feed in the morning, and raise 70% of total amount by throwing in the afternoon; This manufactured feed primary raw material has high-quality fish meal, dregs of beans, peanut meal, dusty yeast. lecithin, fish oil, B B-complex, mineral matter. bait etc., according to mass percent, crude protein 36%, raw fiber 8%, crude fat 3%, coarse ash 18%, total phosphorus 1%, calcium 1.5% ~ 4.5%, lysine 0.8%, salt 3%, particle diameter 1.2mm; After crab kind sloughs off the 1st shell, feedstuff feeding amount is by 7% ~ 8% of crab kind body weight, this manufactured feed primary raw material has high-quality fish meal, dregs of beans, peanut meal, dusty yeast. lecithin, fish oil, B B-complex, mineral matter, bait etc., according to mass percent, crude protein 32%, raw fiber 8%, crude fat 3%, coarse ash 18%, total phosphorus 1%, calcium 1.5% ~ 4.5%, lysine 0.8%, salt 3%, particle diameter 1.6mm; 1 ~ 2 food platform is set in warm canopy soil pond, is used for checking the rich apology of bait, and timely adjustment feeding volume; Feeding time is generally eaten food complete being advisable in 1.5h ~ 2h; Note throwing something and feeding ionized calcium during shell, to strengthen crab kind physique, promote the neat shell of crab kind;
5) crab kind is fished for, is moved the pool
In the first tenday period of a month in May, through the cultivation of about 100 days in the booth of soil pond, greenhouse, the crab kind of 80% ~ 90% only can grow to 70g/ ~ 90g/, catches crab kind, by the mode of repeatedly washing by water, crab kind is caught as early as possible complete by cage; The crab kind of catching carries out counting, sterilizing, and moves to the outer pool afterwards and puts in a suitable place to breed, and through this engineering practice, the crab kind rate of recapture can reach 80% ~ 85%, every 667m 2can catch crab kind 600kg ~ 850kg, silver carp Variegated is done pond and is caught, and throws in the outer pool, weightening finish about 15% ~ 20% as fingerling.
As Fig. 1,2, step 1) in, the native pond green house that this example adopts, comprises booth and Tu Chi; Booth on Tu Chi, and forms greenhouse with Tu Chi; Described booth comprises arch tube, canopy door and light-passing plastic film; Arch tube becomes " door " font; Described arch tube has multiple, and they are parallel to each other arranged in parallel successively along the length direction of booth, and the top of each arch tube is connected on same pull bar; Canopy door has two, and they lay respectively at the space in first and " door " font of enclosing of last root arch tube; Light-passing plastic film is laid on each arch tube, and to be attached between canopy door and arch tube spatially, forms greenhouse space; The two ends of described every root arch tube are connected to Tu Chi both sides on the bank, and arch tube span is 10m ~ 12m; The part of described light-passing plastic film at arch tube two ends is removably connected to Tu Chi both sides on the bank; Between the adjacent arch tube of booth, be provided with film-pressing line, light-passing plastic film is crushed between film-pressing line and arch tube; Also comprise center pillar; The center of camber pipe connects the top of center pillar; Be provided with pier in the middle of described native pond, the bottom of each center pillar is fixed on pier; Also comprise paired inclined support bar, one end of often pair of inclined support bar is connected on pier, and the other end is connected on arch tube, and the both sides of center at arch tube; Also comprise the reinforced pole parallel with pull bar; Reinforced pole has two, and they connect each arch tube along the length direction of booth; The link position of two reinforced poles and arch tube is respectively on the both sides of arch tube center.
The head and the tail two ends of booth are respectively provided with 2 oblique reinforced poles, and oblique reinforced pole becomes 30-35 degree angle with horizontal plane; For initial and end either end, 2 oblique reinforced poles are symmetrical about pull bar, the bottom of oblique reinforced pole connects on the ground, the top of oblique reinforced pole is connected on first or last root arch tube, the bottom of oblique reinforced pole and ground attachment point and first or last root arch tube between each arch tube be all connected on the shaft of oblique reinforced pole; Internal layer light-passing plastic film is also provided with at two side lower of booth; The bottom of internal layer light-passing plastic film is fixedly connected with ground, and top is fixedly connected on arch tube by pressing mold by bar, and press mold is connected on each arch tube by bar along the length direction of booth; The distance from top ground of internal layer light-passing plastic film is 0.6m ~ 1.3m.Outside one deck is raised and booth can be made to ventilate to certain position, and the film of inner side can prevent the harmful organisms such as toad, water rat, frog from entering booth.
Described center pillar has many, connects a center pillar at interval of on three arch tubes; The top of center pillar is also connected with pull bar; Described inclined support bar has multipair, connects a pair inclined support bar at interval of on three arch tubes; The top of inclined support bar is also connected with reinforced pole.
The centre position of described arch tube is 2.5m-2.7m apart from the distance of native pond horizontal plane and canopy height; The pond of described Tu Chi is 120cm ~ 150cm deeply, and slope is than being 1:1.2 ~ 1.5; Ground 0.5m ~ the 0.7m on Tu Chi both sides is inserted at described arch tube two ends; The bank of described arch tube two ends distance Tu Chi is 0.8m ~ 1.2m.
Passage is erected with along its length in described native pond; Passage is set up on each pier.
Described light-passing plastic film is the White plastic film of 10 thickness; The length direction of booth is east-west direction.
The length of described native pond booth is advisable with 45m ~ 50m, is beneficial to and carries out into the production such as draining, feedstuff feeding measure.
Described light-passing plastic film is connected to Tu Chi both sides on the bank in arch tube two end portions by firming mode.
Passage is cement precast floor slab; The bottom of described center pillar and the bottom of inclined support bar are all connected on cement precast floor slab; For the situation same arch tube being connected with center pillar and two inclined support bars, the bottom extremity of this center pillar bottom and an inclined support bar.
Compared with general temperature canopy of the prior art, the native pond green house of this example adopts specific structural design, and its steadiness is good, and energy Appropriate application plastic film, is convenient to carry out into the production such as draining, feedstuff feeding measure; Pond is deeply large, and it is large that water body carries fishing amount.
Compare with the cultural method of existing pond rearing crab kind, utilize native pond green house to cultivate large gauge crab kind, there is following advantage: one is utilize greenhouse temperature, crab kind can be made to carry out reinforced cultivating growth ahead of time, put survival rate in a suitable place to breed to significantly improve, and crab kind can be made to do sth. in advance shell 2 times; Two be crab kind is cultivated in the temperature canopy of native pond to the first tenday period of a month in May catch again put in a suitable place to breed to one-tenth crab cultivation the outer pool, can be omitted in in the outer pool of crab cultivation and this operation sequence of Wang Wei community stable breeding crab kind is set, make the outer pool have sufficient Time and place to carry out sterilization, plant grass, throw the cultivation such as spiral shell, rich water operation, for good basis is established in the middle and later periods shell of crab kind, growth and disease prevention and control; Three is can clearly grasp to put in a suitable place to breed to becoming the situations such as the crab cultivation crab kind quantity on the outer pool and quality, carries out throwing pointedly and raises, can improve efficiency of feed utilization significantly; Four is to become crab ahead of time to have more operability to the one-tenth crab aquaculture model sold that goes on the market during the Mid-autumn Festival, National Day; The large gauge crab kind point pond adopting this engineering practice to cultivate is put in a suitable place to breed to one-tenth crab cultivating pool, under the prerequisite ensureing into crab incubation specification (male crab more than 250g, female crab more than 150g) and good coefficient of condition, crab can be made into and catch listing in the great festival celebration of China (Mid-autumn Festival, National Day) period, than become the Time To Market of crab under existing one-tenth crab aquaculture model about 30 days ahead of time, price becomes more than 40% of crab price higher than same specification under existing one-tenth crab aquaculture model, rob and account for the first market opportunities, significantly improve into crab price and fanning economics; Five is that culturist can put other breed variety (such as putting 1 batch of freshwater shrimp seed in a suitable place to breed) in a suitable place to breed in crab pond after one-tenth crab catches listing, and larger usefulness ground plays the availability of crab pond water body.Therefore crab kind is cultivated by native pond green house, put in a suitable place to breed again and carry out into crab cultivation to the outer pool, shorten it and form the cycle, reduce feed coefficient and megathermal period cultivation management and control cost, significantly improve the availability of the survival rate of crab kind, the incubation specification becoming crab, price and crab pond water body, make culturist obtain higher fanning economics.

Claims (6)

1. native pond green house cultivates a method for large gauge crab kind, it is characterized in that comprising step:
1) native pond green house is built
Booth area is advisable with 46m × 9m ~ 50m × 9m, and ceiling covers 10 White plastic film;
2) native pond condition
Bottom material of pond for breeding is loam, the dark 120cm ~ 150cm in pond, and the water yield of receiving is 60cm ~ 80cm; Slope is than 1:1.2 ~ 1.5; Have abundant water resources, water quality meets the regulation requirement of NY5361;
3) crab kind put in a suitable place to breed before preparation
3-1) clean up the pond
End of the year prior year lays Chi Po, rebuilds with 40 order ~ 60 order polyethylene screen cloths, every 667m 2with the bleaching powder 5kg ~ 10kg containing 30% ~ 35% available chlorine, carry out full pool spilling head;
3-2) intake, plant grass, training water
Put crab kind in a suitable place to breed at the beginning of this before, annotate new water to the water surface apart from 50cm ~ 60cm at the bottom of pond with 80 order ~ 100 order silk cover filterings; Plantation after water plants sterilization; Amino acid biological fertilizer is adopted to carry out training water;
3-3) seed is put in a suitable place to breed
At the beginning of this, when canopy temperature 10 DEG C ~ 30 DEG C or water temperature 8 DEG C ~ 14 DEG C, put crab kind in a suitable place to breed; Before putting in a suitable place to breed, crab kind is carried out disinfection; Every 667m 2put the crab kind 10000 ~ 12000 of 180/kg ~ 240/kg in a suitable place to breed;
To put in a suitable place to breed after crab kind 2 months, in Tu Chi greenhouse, put silver carp kind and the Variegated of every tail 0.5kg ~ 0.75kg in a suitable place to breed, every 667m 2put silver carp kind 10 tail ~ 15 tail in a suitable place to breed, Variegated 5 tail ~ 10 tail;
4) feeding and management
4-1) regulating and controlling water quality
According to canopy temperature, water temperature and water quality situation, carry out rich water, regulating water quality with amino acid biological fertilizer or other biologic product, ensure the fertilizer of water quality in canopy in whole Growth process, work, tender, refreshing;
4-2) feedstuff feeding
A, in canopy water temperature higher than 10 DEG C lower than 16 DEG C time, feedstuff feeding amount, by 3% ~ 4% of crab kind body weight, is thrown something and fed 2 times day, respectively throws something and feeds morning and afternoon 1 time, and raise 28% ~ 32% of total amount throw something and feed by throwing in the morning, and surplus is thrown something and fed afternoon;
In the manufactured feed in this stage, comprise according to mass percent: crude protein 32% ~ 38%, raw fiber 7.9% ~ 8.2%, crude fat 2.8% ~ 3.3%, coarse ash 17% ~ 19%, moisture are no more than 12%, total phosphorus 0.9% ~ 1.2%, calcium 1.5% ~ 4.5%, lysine 0.7% ~ 1.0%, salt 2.7% ~ 3.2%, surplus are binder, particle diameter 1.2mm ~ 1.6mm;
B, after the 1st the neat shell of crab kind, feedstuff feeding amount, by 7% ~ 8% of crab kind body weight, is thrown something and fed 2 times day, respectively throws something and feeds morning and afternoon 1 time, and raise 28% ~ 32% of total amount by throwing and throw something and feed in the morning, and surplus is thrown something and fed afternoon;
In the manufactured feed in this stage, comprise according to mass percent: crude protein 30% ~ 36%, raw fiber 7.9% ~ 8.2%, crude fat 2.8% ~ 3.3%, coarse ash 17% ~ 19%, moisture are no more than 12%, total phosphorus 0.9% ~ 1.2%, calcium 1.5% ~ 4.5%, lysine 0.7% ~ 1.0%, salt 2.7% ~ 3.2%, surplus are binder, particle diameter 1.6mm ~ 1.8mm;
4-3) disease control
Within every 7 days ~ 10 days, alternately use the generation of microorganism formulation and resisting stress preparation prevention crab kind disease; When the small particles of macroscopic suspension appears in water body in canopy, desinsection must be carried out; Oxygenation and venting practice must be implemented after desinsection;
4-4) daily management
Perform green house personal management system, strictly follow wheel changing shifts and inspection record program, note Changes in weather, regulate canopy temperature in time, conscientiously observation crab kind ingest, active situation and variation of water, conscientiously carry out the daily management mission of warm canopy;
5) crab kind is fished for, is moved the pool
On May, the middle ten days, when water temperature continuous a couple of days is stabilized in 18 DEG C ~ 20 DEG C, with cage catch green house cultivate crab kind and put in a suitable place to breed to the outer pool; Dry pond catch put in a suitable place to breed in warm canopy silver carp, Variegated putting in a suitable place to breed to the outer pool.
2. native pond according to claim 1 green house cultivates the method for large gauge crab kind, it is characterized in that step 1) in, booth build hidding and sunny side place in, and single pond is east-west; Booth is steel-tube construction;
Step 2) in, Tu Chi two ends respectively stay one, arrange brick mixing cement floor passage in the middle of native pond; Tu Chi is equipped with bar type micro-hole oxygenation facility and culvert system.
3. native pond according to claim 1 green house cultivates the method for large gauge crab kind, it is characterized in that described step 3-1) in, adopt dry method to carry out full pool spilling head;
Step 3-2) time be step 3-3) first 10 days;
Step 3-2) in, the water plants of employing is that sterilization method is for be soaked in 30 ~ 50g/m water peanut by water peanut 3the chlorine water body 20min ~ 30min of available chlorine, plantation density is evenly plant by 40% ~ 50% of pond area; Every 667m 2, every 1 meter of depth of water amino acid Fertilizer water paste 1.5kg ~ 2.0kg carries out rich water;
Described step 3-3) in, the method for crab kind sterilization crab kind is placed in the liquor potassic permanganate soaking disinfection 15min of 10mg/L ~ 15mg/L.
4. native pond according to claim 1 green house cultivates the method for large gauge crab kind, it is characterized in that described step 4-1) in, the method for water quality adjustment is: every 667m 2, every 1 meter of depth of water base acid Fertilizer water paste 1.5kg ~ 2kg and probiotic 0.30kg carries out rich water; Keep water transparence at 25cm ~ 30cm, water colour is yellow green;
When crab kind there is fragmentary shell and water temperature 16 DEG C ~ 18 DEG C time, every 667m 2, every 1 meter of depth of water splashes ion pair calcium 250ml ~ 300ml, promotes the neat shell of crab kind;
Step 4-2) in, 1 ~ 2 food platform is set in native pond, is used for checking the rich apology of bait, and timely adjustment feeding volume, eat food in 1.5h ~ 2h complete;
Step 4-3) in, every 667m 2, every 1 meter of depth of water vivocon-S250ml ~ 300ml and the very resisting stress VC+VE0.30kg ~ 0.40kg that detoxifies carry out crab disease prevention; Every 667m 2, ivermectin solution 10ml ~ 15ml after every 1 meter of depth of water thin up kills zooplankton in water body.
5. native pond according to claim 1 green house cultivates the method for large gauge crab kind, it is characterized in that in described step 5, crab kind is at green house through cultivating, and the crab kind of 80% ~ 90% only grows to 70g/ ~ 90g/, the crab kind rate of recapture is 80% ~ 85%, every 667m 2catch crab kind 650kg ~ 850kg, silver carp, the Variegated rate of recapture 95% ~ 100%, only all increase weight 15% ~ 20%.
6. native pond according to claim 1 green house cultivates the method for large gauge crab kind, it is characterized in that described 4-2) in feedstuff feeding:
In a stage, in the manufactured feed in this stage, comprise according to mass percent: crude protein 36%, raw fiber 8%, crude fat 3%, coarse ash 18%, moisture 12%, total phosphorus 1%, calcium 1.5% ~ 4.5%, lysine 0.8%, salt 3%, surplus are binder, particle diameter 1.2mm ~ 1.6mm;
In b-stage, in the manufactured feed in this stage, comprise according to mass percent: crude protein 32%, raw fiber 8%, crude fat 3%, coarse ash 18%, moisture 12%, total phosphorus 1%, calcium 1.5% ~ 4.5%, lysine 0.8%, salt 3%, surplus are binder, particle diameter 1.6mm ~ 1.8mm.
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