CN107006411A - A kind of cultural method of river crab - Google Patents
A kind of cultural method of river crab Download PDFInfo
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- CN107006411A CN107006411A CN201710416772.7A CN201710416772A CN107006411A CN 107006411 A CN107006411 A CN 107006411A CN 201710416772 A CN201710416772 A CN 201710416772A CN 107006411 A CN107006411 A CN 107006411A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
- Y02A40/818—Alternative feeds for fish, e.g. in aquacultures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/87—Re-use of by-products of food processing for fodder production
Abstract
The invention discloses a kind of cultural method of river crab, it is related to technical field of aquaculture, comprises the following steps：（1）, selection pool；（2）, build crab farming environment；（3）, cultivation water plant；（4）, juvenile crab selection；（5）, put juvenile crab in a suitable place to breed；（6）, aquaculture management；（7）Fish for listing.The culture of Chinese mitten crab ecological water area of present invention offer high-quality, can effectively control insect pest in culture of Chinese mitten crab, disease to occur, and set by the pond environment of science and bait is delivered, and make the survival rate height of crab, and growth rate is fast.
Description
Technical field
The present invention relates to technical field of aquaculture, and in particular to a kind of cultural method of river crab.
Background technology
River crab scientific name be Sinensis soft-shelled turtle crab, the expensive freshwater product of generic name, also known as eriocheir sinensis, crab, delicious meat, unique flavor,
The economic value highest in more than 500 kinds of fresh water crab of China, is the crab class bred in growth, seawater in China's special product, fresh water.From upper
Century, the eighties rose, the production form of river crab begin with it is natural fish for propagating transformation artificially, and form larger production
Scale, as the pillar industry in China's freshwater aquiculture.
The life of river crab be it is of short duration, the history of life after zoea, megalops larva, young crab and into several stages such as crab,
Need the young to cast off a skin as megalops larva for 5 times in life, then casted off a skin through 13-15 days and turn into crab.As crab seed puts close in a suitable place to breed
Degree is continuously increased, and cultured output is improved constantly, and during cultivation, the ecological environment water quality adjustment on the crab pool is improper, Industry Waste
Water and sanitary sewage directly affect water quality, cause river crab infection virus, various antibacterials are misapplied in addition, also existing in culture of Chinese mitten crab
Element, sterilization element, bait to feed quality improper.
The content of the invention
It is an object of the invention to provide a kind of cultural method of river crab there is provided the culture of Chinese mitten crab ecological water area of high-quality, can have
Insect pest, disease occur in effect control culture of Chinese mitten crab, set by the pond environment of science and bait is delivered, make the survival rate of crab
Height, growth rate is fast.
The invention provides following technical scheme：A kind of cultural method of river crab, comprises the following steps：
（1）, selection pool：Selection water surface area is 3 ~ 5 mu, the pond that depth is 1 ~ 1.5m, drains water, removes pond bottom
Excessive mud, the mud for staying 15 ~ 20cm deep, exposure bottom of pond 5 ~ 7 days；
（2）, build crab farming environment；The sandy loam and gravel soil that thickness is 3 ~ 5cm are spread in bottom of pond, the surrounding construction in pond puts anti-
Escape facility, culvert system goes out to enter west in the east, the water inlet and delivery port in pond, which enclose, sets the iron wire that bore is less than 1cm
Net, pond is injected depth to spread fertilizer over the fields lime disinfection into pond after 20 ~ 25cm water；
（3）, cultivation water plant：Water plant is transplanted in pool when intaking, and cultivated area is 60%, in the middle of pond；
（4）, juvenile crab selection：Select the Eriocheir sinensis juvenile crab of ChangJiang River as juvenile crab kind is put in a suitable place to breed, put juvenile crab specification in a suitable place to breed
It is that 130 ~ 160g, male crab body weight be 180 ~ 250g for female crab body weight, it is 800 every mu to put juvenile crab quantity in a suitable place to breed, and male, female juvenile crab is put in a suitable place to breed
Ratio is 3：2；
（5）, put juvenile crab in a suitable place to breed：First prepare clear water on bank, juvenile crab is soaked into 4 ~ 6min in clear water, take out, place into pond water
Middle 10min, is repeated 2 ~ 3 times, after young crab progressively suctions moisture and adapts to water temperature, is put into pond；
（6）, aquaculture management
Water quality management：Every 10 ~ 12 days, splashed 10 ~ 15ppm of quick lime on the full pool, and regulation pool water pH value is 7.8 ~ 8.5,7 ~ 10
It changes water once, and quantity of exchanged water is pond water 1/3rd, and the pond depth of water keeps 1.0 ~ 1.5m, water is kept during the 1st and 2 shell
Transparency is 30 ~ 40com, keeps water transparence to be 50 ~ 55cm during the 3rd and 4 shell, water is transparent during the 5th shell
Degree is in 80 ~ 90cm；
Pasture and water manage：Fair weather is selected, first uniform 0.1~0.2% NaLS of splashing is molten into river crab cultivation pond
Liquid, then 1.8~1.9% polymeric ferrous sulphate solutions of uniformly splashing, the consumption of the sodium lauryl sulfate solution for every mu 20~
30kg, the consumption of polymeric ferrous sulphate solution is every mu of 10~30kg；
（7）Fish for listing：Can capture edible when the average weight of crab reaches 150g, captured using drift net, crab pot capture,
The method that mesh bag captured or done pool capture is captured.
Preferably, the step（2）The mass ratio of middle sandy loam and gravel soil is 1：2~1：3, the consumption of the quick lime
For every square metre of 100g.
Preferably, the step（2）Build crab farming environment in be additionally included in mud at 5~10cm be provided with it is multiple go out
The flexible pipe of gas port, hose end is provided with aerator, and the escaping-preventing facilities are brick wall or plastic sheeting.
Preferably, the step（3）In water plant for eel grass, waterweed, hydrilla verticillata, Azolla imbricata, water hyacinth and
Any of water lettuce.
Preferably, the step（5）In put the juvenile crab time in a suitable place to breed for annual 15 days 2 months to 30 days 2 months, put in a suitable place to breed before juvenile crab in pond
Spiral shell is delivered in the pool, injected volume is every mu of 150 ~ 170kg.
Preferably, the step（6）Also include feed management in aquaculture management, feeding volume is the 5 ~ 10% of pond crab weight,
Feed is delivered into pool daily 1 ~ 2 time.
Preferably, the feed includes following raw material by weight：20 ~ 30 parts of potassium feldspar, 10 ~ 15 parts of rice bran, dregs of beans 2
~ 9 parts, it is 1 ~ 7 part of sea sedge, 1 ~ 6 part of sheep bone, 2 ~ 6 parts of slaughtering leftover bits and pieces, 2 ~ 6 parts of egg, 2 ~ 4 parts of garlic, 2 ~ 4 parts of salt, purple
1 ~ 2 part of 2 ~ 4 parts of wild cabbage, 1 ~ 3 part of sea lettuce, 1 ~ 3 part of shepherd's purse and phagostimulant.
Preferably, the phagostimulant includes following raw material by weight：10 ~ 15 parts of wheat bran, 2 ~ 6 parts of dried orange peel, bentonite 2
~ 6 parts, 1 ~ 3 part of medical stone, 1 ~ 3 part of banana, 0.2 ~ 1.2 part of threonine, 0.2 ~ 0.8 part of calcium monohydrogen phosphate, ethoxyquinoline 0.2 ~
0.1 ~ 0.3 part of 0.6 part, 0.1 ~ 0.3 part of astragalus polyose and calcium propionate, preparation method is：Wheat bran is put into 70 ~ 90 DEG C of marmites and turned over
20 ~ 30min is fried, is put into after taking-up in mixer, and surplus stock mixing is sequentially added according to proportioning, is stirred with 300 ~ 400r/min
Mix 40 ~ 50min and obtain the phagostimulant.
Beneficial effects of the present invention：There is provided high-quality culture of Chinese mitten crab ecological water area, can effectively control insect pest in culture of Chinese mitten crab,
Disease occurs, and is set by the pond environment of science and bait is delivered, and makes the survival rate height of crab, and growth rate is fast, specifically such as
Under：
（1）, step of the present invention（2）In be oxygenated by aerator and flexible pipe into pond, in order to avoid crab suffocate；Cultivation is aquatic to plant
Thing is used to provide feed for young crab, provides and perch sheltered situation and purify water；Step（5）In before juvenile crab is put in a suitable place to breed to pond
Interior dispensing spiral shell, makes it possess the aquatic ecosystem function of stabilization and provides substantial amounts of animal protein bait to river crab, accelerate
The growing and fattening of river crab；
（2）, step of the present invention（6）Middle progress pasture and water management, first pass through NaLS reduction pasture and water blade face and attachment it
Between surface tension, then aoxidized by bodied ferric sulfate, accelerate the peeling of attachment, in addition, bodied ferric sulfate is powerful
Flocculating properties can improve the transparency of water body, make the suspended substance sedimentation in water to pond bottom, prevent it from continuing to deposit to water
On blade of grass face；
（3）, step of the present invention（6）Middle feed addition slaughtering leftover bits and pieces, garlic etc., it is cost-effective while disclosure satisfy that crab again
The nutritional need of crab optimum growh, the mixed feed protein level efficiently solved during crab cultivation is too high and dirty to environment
The problem of contaminating serious, environmental protection easy to use, safe, the immunity and vigor that can promote crab fast-growth, improve crab, subtracts
The problems such as few crab cultivation disease.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.These embodiments be merely to illustrate the present invention and without
In limitation the scope of the present invention.
Embodiment 1
A kind of cultural method of river crab, comprises the following steps：
（1）, selection pool：Selection water surface area is 3 mu, the pond that depth is 1m, drain water, removes pond bottom excessive
Mud, the mud for staying 15cm deep, exposure bottom of pond 5 days；
（2）, build crab farming environment；The sandy loam and gravel soil that thickness is 3cm are spread in bottom of pond, the surrounding construction in pond puts anti-escape
Facility, culvert system goes out to enter west in the east, and the water inlet and delivery port in pond, which enclose, sets the wire netting that bore is less than 1cm,
Pond is injected depth to spread fertilizer over the fields lime disinfection into pond after 20cm water；
（3）, cultivation water plant：Water plant is transplanted in pool when intaking, and cultivated area is 60%, in the middle of pond；
（4）, juvenile crab selection：Select the Eriocheir sinensis juvenile crab of ChangJiang River as juvenile crab kind is put in a suitable place to breed, put juvenile crab specification in a suitable place to breed
It is that 130g, male crab body weight are 180g for female crab body weight, it is 800 every mu to put juvenile crab quantity in a suitable place to breed, and male, the female juvenile crab ratio of stocking is 3：
2；
（5）, put juvenile crab in a suitable place to breed：First prepare clear water on bank, juvenile crab is soaked into 4min in clear water, take out, place into pond water
10min, is repeated 2 times, and after young crab progressively suctions moisture and adapts to water temperature, is put into pond；
（6）, aquaculture management
Water quality management：Every 10 days, splashed quick lime 10ppm on the full pool, and regulation pool water pH value changes to change water once within 7.8,7 days
Water is pond water 1/3rd, and the pond depth of water keeps 1.0m, and it is 30com, the 3rd that water transparence is kept during the 1st and 2 shell
Water transparence is kept to be 50cm during with 4 shells, the transparency of water is in 80cm during the 5th shell；
Pasture and water manage：Fair weather is selected, first uniform 0.1% sodium lauryl sulfate solution of splashing into river crab cultivation pond, then
Even 1.8% polymeric ferrous sulphate solution of splashing, the consumption of the sodium lauryl sulfate solution is every mu of 20kg, polymeric ferrous sulphate solution
Consumption be every mu of 10kg；
（7）Fish for listing：It can capture edible when the average weight of crab reaches 150g, be caught using drift net catching method
Obtain.
Wherein, the step（2）The mass ratio of middle sandy loam and gravel soil is 1：2, the consumption of the quick lime is often to put down
Square rice 100g.
Wherein, the step（2）Build to be additionally included in mud in crab farming environment and multiple gas outlets are provided with 5cm
Flexible pipe, hose end is provided with aerator, and the escaping-preventing facilities are brick wall.
Wherein, the step（3）In water plant be eel grass.
Wherein, the step（5）In put the juvenile crab time in a suitable place to breed for 15 days 2 months to 30 days 2 months, put in a suitable place to breed and thrown before juvenile crab in pond
Spiral shell is put, injected volume is every mu of 150kg.
Wherein, the step（6）In aquaculture management also include feed management, feeding volume be pond crab weight 5%, daily to
Feed is delivered in pool 1 time.
Wherein, the feed includes following raw material by weight：20 parts of potassium feldspar, 10 parts of rice bran, 2 parts of dregs of beans, sea sedge 1
Part, 1 part of sheep bone, 2 parts of slaughtering leftover bits and pieces, 2 parts of egg, 2 parts of garlic, 2 parts of salt, 2 parts of violet cabbage, 1 part of sea lettuce, shepherd's purse
1 part and 1 part of phagostimulant.
Wherein, the phagostimulant includes following raw material by weight：10 parts of wheat bran, 2 parts of dried orange peel, 2 parts of bentonite, wheat meal
1 part of stone, 1 part of banana, 0.2 part of threonine, 0.2 part of calcium monohydrogen phosphate, 0.2 part of ethoxyquinoline, 0.1 part of astragalus polyose and calcium propionate
0.1 part, preparation method is：Wheat bran is put into 70 DEG C of marmites the 20min that stir-fries, is put into after taking-up in mixer, and according to proportioning
Surplus stock mixing is sequentially added, the phagostimulant is obtained with 300r/min stirrings 40min.
Embodiment 2
A kind of cultural method of river crab, comprises the following steps：
（1）, selection pool：Selection water surface area is 5 mu, the pond that depth is 1.5m, drains water, removes pond bottom excessive
Mud, stay the mud that 20cm is deep, exposure bottom of pond 7 days；
（2）, build crab farming environment；The sandy loam and gravel soil that thickness is 5cm are spread in bottom of pond, the surrounding construction in pond puts anti-escape
Facility, culvert system goes out to enter west in the east, and the water inlet and delivery port in pond, which enclose, sets the wire netting that bore is less than 1cm,
Pond is injected depth to spread fertilizer over the fields lime disinfection into pond after 25cm water；
（3）, cultivation water plant：Water plant is transplanted in pool when intaking, and cultivated area is 60%, in the middle of pond；
（4）, juvenile crab selection：Select the Eriocheir sinensis juvenile crab of ChangJiang River as juvenile crab kind is put in a suitable place to breed, put juvenile crab specification in a suitable place to breed
It is that 160g, male crab body weight are 250g for female crab body weight, it is 800 every mu to put juvenile crab quantity in a suitable place to breed, and male, the female juvenile crab ratio of stocking is 3：
2；
（5）, put juvenile crab in a suitable place to breed：First prepare clear water on bank, juvenile crab is soaked into 6min in clear water, take out, place into pond water
10min, is repeated 3 times, and after young crab progressively suctions moisture and adapts to water temperature, is put into pond；
（6）, aquaculture management
Water quality management：Every 12 days, splashed quick lime 15ppm on the full pool, regulation pool water pH value to change water once within 8.5,10 days,
Quantity of exchanged water is pond water 1/3rd, and the pond depth of water keeps 1.5m, and it is 40com that water transparence is kept during the 1st and 2 shell,
Water transparence is kept to be 55cm during the 3rd and 4 shell, the transparency of water is in 90cm during the 5th shell；
Pasture and water manage：Fair weather is selected, first uniform 0.2% sodium lauryl sulfate solution of splashing into river crab cultivation pond, then
Even 1.9% polymeric ferrous sulphate solution of splashing, the consumption of the sodium lauryl sulfate solution is every mu of 30kg, polymeric ferrous sulphate solution
Consumption be every mu of 30kg；
（7）Fish for listing：It can capture edible when the average weight of crab reaches 150g, be caught using crab pot catching method
Obtain.
Wherein, the step（2）The mass ratio of middle sandy loam and gravel soil is 1：3, the consumption of the quick lime is often to put down
Square rice 100g.
Wherein, the step（2）Build to be additionally included in mud at 10cm in crab farming environment and be provided with multiple gas outlets
Flexible pipe, hose end be provided with aerator, the escaping-preventing facilities be plastic sheeting.
Wherein, the step（3）In water plant be waterweed.
Wherein, the step（5）In put the juvenile crab time in a suitable place to breed for 15 days 2 months to 30 days 2 months, put in a suitable place to breed and thrown before juvenile crab in pond
Spiral shell is put, injected volume is every mu of 170kg.
Wherein, the step（6）Also include feed management in aquaculture management, feeding volume is the 10% of pond crab weight, daily
Feed is delivered into pool 2 times.
Wherein, the feed includes following raw material by weight：30 parts of potassium feldspar, 15 parts of rice bran, 9 parts of dregs of beans, sea sedge 7
Part, 6 parts of sheep bone, 6 parts of slaughtering leftover bits and pieces, 6 parts of egg, 4 parts of garlic, 4 parts of salt, 4 parts of violet cabbage, 3 parts of sea lettuce, shepherd's purse
3 parts and 2 parts of phagostimulant.
Wherein, the phagostimulant includes following raw material by weight：15 parts of wheat bran, 6 parts of dried orange peel, 6 parts of bentonite, wheat meal
3 parts of stone, 3 parts of banana, 1.2 parts of threonine, 0.8 part of calcium monohydrogen phosphate, 0.6 part of ethoxyquinoline, 0.3 part of astragalus polyose and calcium propionate
0.3 part, preparation method is：Wheat bran is put into 90 DEG C of marmites the 30min that stir-fries, is put into after taking-up in mixer, and according to proportioning
Surplus stock mixing is sequentially added, the phagostimulant is obtained with 400r/min stirrings 50min.
Embodiment 3
A kind of cultural method of river crab, comprises the following steps：
（1）, selection pool：Selection water surface area is 4 mu, the pond that depth is 1.2m, drains water, removes pond bottom excessive
Mud, stay the mud that 17cm is deep, exposure bottom of pond 6 days；
（2）, build crab farming environment；The sandy loam and gravel soil that thickness is 4cm are spread in bottom of pond, the surrounding construction in pond puts anti-escape
Facility, culvert system goes out to enter west in the east, and the water inlet and delivery port in pond, which enclose, sets the wire netting that bore is less than 1cm,
Pond is injected depth to spread fertilizer over the fields lime disinfection into pond after 22cm water；
（3）, cultivation water plant：Water plant is transplanted in pool when intaking, and cultivated area is 60%, in the middle of pond；
（4）, juvenile crab selection：Select the Eriocheir sinensis juvenile crab of ChangJiang River as juvenile crab kind is put in a suitable place to breed, put juvenile crab specification in a suitable place to breed
It is that 145g, male crab body weight are 220g for female crab body weight, it is 800 every mu to put juvenile crab quantity in a suitable place to breed, and male, the female juvenile crab ratio of stocking is 3：
2；
（5）, put juvenile crab in a suitable place to breed：First prepare clear water on bank, juvenile crab is soaked into 5min in clear water, take out, place into pond water
10min, is repeated 2 times, and after young crab progressively suctions moisture and adapts to water temperature, is put into pond；
（6）, aquaculture management
Water quality management：Every 11 days, splashed quick lime 12ppm on the full pool, and regulation pool water pH value changes to change water once within 8.2,8 days
Water is pond water 1/3rd, and the pond depth of water keeps 1.2m, and it is 35com, the 3rd that water transparence is kept during the 1st and 2 shell
Water transparence is kept to be 52cm during with 4 shells, the transparency of water is in 85cm during the 5th shell；
Pasture and water manage：Fair weather is selected, first uniform 0.15% sodium lauryl sulfate solution of splashing into river crab cultivation pond, then
Uniform 1.85% polymeric ferrous sulphate solution of splashing, the consumption of the sodium lauryl sulfate solution is every mu of 25kg, and bodied ferric sulfate is molten
The consumption of liquid is every mu of 20kg；
（7）Fish for listing：It can capture edible when the average weight of crab reaches 150g, be captured using mesh bag.
Wherein, the step（2）The mass ratio of middle sandy loam and gravel soil is 1：3, the consumption of the quick lime is often to put down
Square rice 100g.
Wherein, the step（2）Build to be additionally included in mud in crab farming environment and multiple gas outlets are provided with 8cm
Flexible pipe, hose end is provided with aerator, and the escaping-preventing facilities are brick wall or plastic sheeting.
Wherein, the step（3）In water plant be hydrilla verticillata.
Wherein, the step（5）In put the juvenile crab time in a suitable place to breed for 15 days 2 months to 30 days 2 months, put in a suitable place to breed and thrown before juvenile crab in pond
Spiral shell is put, injected volume is every mu of 160kg.
Wherein, the step（6）In aquaculture management also include feed management, feeding volume be pond crab weight 8%, daily to
Feed is delivered in pool 1 time.
Wherein, the feed includes following raw material by weight：25 parts of potassium feldspar, 12.5 parts of rice bran, 5.5 parts of dregs of beans,
4 parts of sea sedge, 3.5 parts of sheep bone, 4 parts of slaughtering leftover bits and pieces, 4 parts of egg, 3 parts of garlic, 3 parts of salt, 3 parts of violet cabbage, sea lettuce 2
1.5 parts of part, 2 parts of shepherd's purse and phagostimulant.
Wherein, the phagostimulant includes following raw material by weight：12.5 parts of wheat bran, 4 parts of dried orange peel, 4 parts of bentonite, wheat
2 parts of meal stone, 2 parts of banana, 0.8 part of threonine, 0.6 part of calcium monohydrogen phosphate, 0.4 part of ethoxyquinoline, 0.2 part of astragalus polyose and propionic acid
0.2 part of calcium, preparation method is：Wheat bran is put into 80 DEG C of marmites the 25min that stir-fries, is put into after taking-up in mixer, and according to
Than sequentially adding surplus stock mixing, the phagostimulant is obtained with 350r/min stirrings 45min.
The present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, its according to
The technical scheme described in foregoing embodiments can so be modified, or which part technical characteristic is equally replaced
Change.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention
Protection domain within.
Claims (8)
1. a kind of cultural method of river crab, it is characterised in that comprise the following steps：
（1）, selection pool：Selection water surface area is 3 ~ 5 mu, the pond that depth is 1 ~ 1.5m, drains water, removes pond bottom
Excessive mud, the mud for staying 15 ~ 20cm deep, exposure bottom of pond 5 ~ 7 days；
（2）, build crab farming environment；The sandy loam and gravel soil that thickness is 3 ~ 5cm are spread in bottom of pond, the surrounding construction in pond puts anti-
Escape facility, culvert system goes out to enter west in the east, the water inlet and delivery port in pond, which enclose, sets the iron wire that bore is less than 1cm
Net, pond is injected depth to spread fertilizer over the fields lime disinfection into pond after 20 ~ 25cm water；
（3）, cultivation water plant：Water plant is transplanted in pool when intaking, and cultivated area is 60%, in the middle of pond；
（4）, juvenile crab selection：Select the Eriocheir sinensis juvenile crab of ChangJiang River as juvenile crab kind is put in a suitable place to breed, put juvenile crab specification in a suitable place to breed
It is that 130 ~ 160g, male crab body weight be 180 ~ 250g for female crab body weight, it is 800 every mu to put juvenile crab quantity in a suitable place to breed, and male, female juvenile crab is put in a suitable place to breed
Ratio is 3：2；
（5）, put juvenile crab in a suitable place to breed：First prepare clear water on bank, juvenile crab is soaked into 4 ~ 6min in clear water, take out, place into pond water
Middle 10min, is repeated 2 ~ 3 times, after young crab progressively suctions moisture and adapts to water temperature, is put into pond；
（6）, aquaculture management
Water quality management：Every 10 ~ 12 days, splashed 10 ~ 15ppm of quick lime on the full pool, and regulation pool water pH value is 7.8 ~ 8.5,7 ~ 10
It changes water once, and quantity of exchanged water is pond water 1/3rd, and the pond depth of water keeps 1.0 ~ 1.5m, water is kept during the 1st and 2 shell
Transparency is 30 ~ 40com, keeps water transparence to be 50 ~ 55cm during the 3rd and 4 shell, water is transparent during the 5th shell
Degree is in 80 ~ 90cm；
Pasture and water manage：Fair weather is selected, first uniform 0.1~0.2% NaLS of splashing is molten into river crab cultivation pond
Liquid, then 1.8~1.9% polymeric ferrous sulphate solutions of uniformly splashing, the consumption of the sodium lauryl sulfate solution for every mu 20~
30kg, the consumption of polymeric ferrous sulphate solution is every mu of 10~30kg；
（7）Fish for listing：Can capture edible when the average weight of crab reaches 150g, captured using drift net, crab pot capture,
The method that mesh bag captured or done pool capture is captured.
2. the cultural method of river crab according to claim 1, it is characterised in that the step（2）Middle sandy loam and gravel
The mass ratio of soil is 1：2~1：3, the consumption of the quick lime is every square metre of 100g.
3. the cultural method of river crab according to claim 1, it is characterised in that the step（2）Build in crab farming environment
It is additionally included in the flexible pipe for being provided with multiple gas outlets in mud at 5~10cm, hose end is provided with aerator, it is described anti-escape to set
Apply as brick wall or plastic sheeting.
4. the cultural method of river crab according to claim 1, it is characterised in that the step（3）In water plant be
Any of eel grass, waterweed, hydrilla verticillata, Azolla imbricata, water hyacinth and water lettuce.
5. the cultural method of river crab according to claim 1, it is characterised in that the step（5）In put the juvenile crab time in a suitable place to breed
For annual 15 days 2 months to 30 days 2 months, put in a suitable place to breed and deliver spiral shell before juvenile crab in pond, injected volume is every mu of 150 ~ 170kg.
6. the cultural method of river crab according to claim 1, it is characterised in that the step（6）Also wrapped in aquaculture management
Feed management is included, feeding volume is the 5 ~ 10% of pond crab weight, delivers feed into pool daily 1 ~ 2 time.
7. the cultural method of river crab according to claim 6, it is characterised in that the feed includes following by weight
Raw material：20 ~ 30 parts of potassium feldspar, 10 ~ 15 parts of rice bran, 2 ~ 9 parts of dregs of beans, 1 ~ 7 part of sea sedge, 1 ~ 6 part of sheep bone, slaughtering leftover bits and pieces 2 ~
6 parts, 2 ~ 6 parts of egg, 2 ~ 4 parts of garlic, 2 ~ 4 parts of salt, 2 ~ 4 parts of violet cabbage, 1 ~ 3 part of sea lettuce, 1 ~ 3 part of shepherd's purse and phagostimulant 1 ~
2 parts.
8. the cultural method of river crab according to claim 7, it is characterised in that the phagostimulant include by weight with
Lower raw material：10 ~ 15 parts of wheat bran, 2 ~ 6 parts of dried orange peel, 2 ~ 6 parts of bentonite, 1 ~ 3 part of medical stone, 1 ~ 3 part of banana, threonine 0.2 ~ 1.2
0.1 ~ 0.3 part of part, 0.2 ~ 0.8 part of calcium monohydrogen phosphate, 0.2 ~ 0.6 part of ethoxyquinoline, 0.1 ~ 0.3 part of astragalus polyose and calcium propionate,
Preparation method is：Wheat bran is put into 70 ~ 90 DEG C of marmites the 20 ~ 30min that stir-fries, is put into after taking-up in mixer, and according to proportioning
Surplus stock mixing is sequentially added, stirring 40 ~ 50min with 300 ~ 400r/min obtains the phagostimulant.
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| CN107711639A (en) * | 2017-09-30 | 2018-02-23 | 安徽永言河蟹原种场 | A kind of cultural method for improving river crab meat |
| CN107751065A (en) * | 2017-10-27 | 2018-03-06 | 宿松县东求水产开发有限公司 | A kind of cultural method of crab |
| CN107950449A (en) * | 2017-12-22 | 2018-04-24 | 钦州市钦州港国鸿水产养殖专业合作社 | A kind of cultural method of crab |
| CN109699546A (en) * | 2019-03-08 | 2019-05-03 | 周爱民 | A kind of high-yield and high-efficiency cultural method of river crab |
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