CN108901964A - A kind of cultural method of high yield crab - Google Patents
A kind of cultural method of high yield crab Download PDFInfo
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- CN108901964A CN108901964A CN201811021948.XA CN201811021948A CN108901964A CN 108901964 A CN108901964 A CN 108901964A CN 201811021948 A CN201811021948 A CN 201811021948A CN 108901964 A CN108901964 A CN 108901964A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 184
- 230000000366 juvenile effect Effects 0.000 claims abstract description 41
- 201000010099 disease Diseases 0.000 claims abstract description 23
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims abstract description 23
- 241000251468 Actinopterygii Species 0.000 claims abstract description 16
- 241000143060 Americamysis bahia Species 0.000 claims abstract description 14
- 238000009360 aquaculture Methods 0.000 claims abstract description 11
- 244000144974 aquaculture Species 0.000 claims abstract description 11
- 241000196324 Embryophyta Species 0.000 claims description 31
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 24
- 230000003442 weekly effect Effects 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 235000012255 calcium oxide Nutrition 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 239000000292 calcium oxide Substances 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims description 10
- 244000025254 Cannabis sativa Species 0.000 claims description 5
- 241001113556 Elodea Species 0.000 claims description 5
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 241001123263 Zostera Species 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 5
- 238000010001 crabbing Methods 0.000 claims description 5
- PLHJDBGFXBMTGZ-WEVVVXLNSA-N furazolidone Chemical compound O1C([N+](=O)[O-])=CC=C1\C=N\N1C(=O)OCC1 PLHJDBGFXBMTGZ-WEVVVXLNSA-N 0.000 claims description 5
- 229960001625 furazolidone Drugs 0.000 claims description 5
- 238000005286 illumination Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- 235000015170 shellfish Nutrition 0.000 claims description 5
- 238000004659 sterilization and disinfection Methods 0.000 claims description 5
- 241000238557 Decapoda Species 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 241000252229 Carassius auratus Species 0.000 claims 1
- 241000195493 Cryptophyta Species 0.000 claims 1
- 240000007594 Oryza sativa Species 0.000 claims 1
- 239000003337 fertilizer Substances 0.000 claims 1
- 235000013372 meat Nutrition 0.000 abstract description 3
- 239000000575 pesticide Substances 0.000 abstract description 3
- 230000009605 growth rhythm Effects 0.000 abstract description 2
- 229940088597 hormone Drugs 0.000 abstract description 2
- 239000005556 hormone Substances 0.000 abstract description 2
- 230000004083 survival effect Effects 0.000 abstract description 2
- 241000195967 Anthoceros Species 0.000 description 4
- 241000209094 Oryza Species 0.000 description 4
- 229930003316 Vitamin D Natural products 0.000 description 1
- QYSXJUFSXHHAJI-XFEUOLMDSA-N Vitamin D3 Natural products C1(/[C@@H]2CC[C@@H]([C@]2(CCC1)C)[C@H](C)CCCC(C)C)=C/C=C1\C[C@@H](O)CCC1=C QYSXJUFSXHHAJI-XFEUOLMDSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001256 tonic effect Effects 0.000 description 1
- 235000019166 vitamin D Nutrition 0.000 description 1
- 239000011710 vitamin D Substances 0.000 description 1
- 150000003710 vitamin D derivatives Chemical class 0.000 description 1
- 229940046008 vitamin d Drugs 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a kind of cultural methods of high yield crab, specifically comprise the following steps：Choose pool, pool arranges, transplants water plant and launches fishes and shrimps, juvenile crab selects, juvenile crab is put in a suitable place to breed, the protection of aquaculture management, disease, crab fishing, the cultural method of crab provided by the invention, the growing environment of crab can be improved, the generation for preventing crab disease, with natural nuisance-free, without hormone without pesticide, meet growth rhythm, the survival rate and yield that crab can be significantly improved, improve the meat of crab, have extensive market application prospect.
Description
Technical field
The invention belongs to crab cultivation technical fields, and in particular to a kind of cultural method of high yield crab.
Background technique
Crab is one of common meal in life, very popular on the market.Crab albumen rich in
Matter, vitamin D and microelement have good tonic effect to body.Existing crab is in the breeding process generally using sharp
Element or pesticide, the speed of growth is fast, remains farm chemical ingredients in vivo, endangers the health of eater, and existing cultural method is not
The only low output of crab, and crab meat is poor, is unable to satisfy demand of the people to crab high quality.
Summary of the invention
The purpose of the present invention is being directed to existing problem, a kind of cultural method of high yield crab is provided.
The present invention is achieved by the following technical solutions：
A kind of cultural method of high yield crab, specifically comprises the following steps：Choose pool, pool arranges, transplants water plant and dispensing
Fishes and shrimps, juvenile crab selection, juvenile crab is put in a suitable place to breed, aquaculture management, disease are protected, crab fishing.
Preferably, a kind of cultural method of high yield crab, wherein the selection pool：10-20 mus of illumination abundances of selection,
Facilitate, has abundant water resources into draining, water quality is well pollution-free, dissolved oxygen amount is high, the pool of environment quiet, the depth of water is in 1-1.5m.
Preferably, a kind of cultural method of high yield crab, wherein the pool arranges：By the soil of the bottom in pool into
Row is ploughed deeply, and is carried out disinfection per acre using 5-10 kilograms of quick lime after digging, and the pool sterilized is filled the water, depth of water 20-
30cm stands 3-4d, the sandy soil of 10-20cm is sprinkled after then draining water, then throws again and applies one layer of muck, thickness 4-5cm, so
Either shallow is carried out afterwards to dig, and so that muck is entered underground, 4-5 solar day, every, the pool that will be shone then are shone into pool again
Every one abrupt slope of 40-50cm heap, abrupt slope height is 50-70cm, and slope ratio is 1:1.6-2.0, then at intermediate heap 2-3 of pool
Knoll, slightly higher than water surface 5-10cm, slope ratio≤1 of knoll:1.5, last being less than with bore into discharge outlet by pool again
The wire netting of 1cm surrounds, then builds the anti-escape wall of 40-50cm in pool surrounding with materials such as plastics, metals.
Preferably, a kind of cultural method of high yield crab, wherein the transplanting water plant and dispensing fishes and shrimps：It is put in pool
Water plant is supported, water plant covering surface is the 0.3-0.4 of pool area, and wherein water plant is by eel grass, green grass, hornwort, waterweed mixing
Composition, then put small fish and shrimp and shellfish in a suitable place to breed in pool, injected volume is 1000-2000 per acre.
Preferably, a kind of cultural method of high yield crab, wherein the juvenile crab selection：Juvenile crab should select neat specification,
Step is complete, physical strong, creep healthy juvenile crab active, disease-free without wound.
Preferably, a kind of cultural method of high yield crab, wherein the juvenile crab is put in a suitable place to breed：Juvenile crab is firstly placed in water and is impregnated
3-4min places 10-15min after then taking out, so repeat 3-4 time, after juvenile crab gradually suction moisture and adaptation water temperature after
It launches as in pool, throw-in density is 1000-1500/mu.
Preferably, a kind of cultural method of high yield crab, wherein the aquaculture management：The feeding amount of crab feed according to
Water temperature selection, water temperature are fed 2-3 times weekly at 10-15 DEG C, and each feeding amount is the 3-4% of crab total weight, and water temperature is in 15-
It at 20 DEG C, feeds 3-4 times weekly, each feeding amount is the 4-6% of crab total weight, and water temperature feeds weekly 7- at 20-25 DEG C
14 times, each feeding amount is the 2-3% of crab total weight, and water temperature is fed 2-3 times weekly at 25 DEG C or more, and each feeding amount is
The 3-4% of crab total weight, each feeding selection of time morning 8-10 point, 4-5 point in afternoon, feed are launched away from pool side 40-50cm
Water in, and daily regular check pool dissolved oxygen amount, pH and water transparency, in time adjust, guarantee dissolved oxygen amount in 5-
20ppm, pH 7.5-8.0, transparency will also remove the remaining feed in the weeds and water in rice field, together in 40-60cm in time
When at interval of 6-8d to change water primary, it is primary that high temperature season 2-3d changes water, and changing during water and controlling water inlet flow velocity is 0.7m/s, out
Mouth of a river flow velocity is 0.5m/s, and quantity of exchanged water is no more than the 1/5 of raw water amount, and water temperature difference is no more than 3-5 DEG C, and keeping water level is 1-
1.5m is applied during changing water and is spilt quick lime progress water transfer, per acre 10-15kg, without changing water during the shell of crab.
Preferably, a kind of cultural method of high yield crab, wherein the disease protection：It is preceding when crab disease occurs
Full pool spilling head is watered in 15-20ppm with quick lime within three days, furazolidone full pool spilling head 0.1-0.2ppm is used since the 4th day.
Preferably, a kind of cultural method of high yield crab, wherein the crab fishing：In late September to November,
It is caught using the method for discharging water crabbing and night manually captures.
The present invention has the following advantages that compared with prior art：The cultural method of crab provided by the invention can improve crab
The growing environment of crab prevents the generation of crab disease, have natural nuisance-free, without hormone without pesticide, meet growth rhythm, can be with
The survival rate and yield for significantly improving crab, improve the meat of crab.
Specific embodiment
Below with reference to specific implementation method, the present invention is described further.
Embodiment 1
A kind of cultural method of high yield crab, specifically comprises the following steps：Choose pool, pool arranges, transplants water plant and dispensing
Fishes and shrimps, juvenile crab selection, juvenile crab is put in a suitable place to breed, aquaculture management, disease are protected, crab fishing.
Preferably, the selection pool described in wherein：10 mu of illumination abundances are chosen, facilitates into draining, have abundant water resources, water quality
It is good it is pollution-free, dissolved oxygen amount is high, the pool of environment quiet, the depth of water is in 1m.
Preferably, wherein the pool arranges：The soil of the bottom in pool is ploughed deeply, after digging per acre
It is carried out disinfection, the pool sterilized is filled the water, depth of water 20cm using 5 kilograms of quick limes, stood 3d, sprinkled after then draining water
Then the sandy soil of 10cm are thrown again and apply one layer of muck, thickness 4cm, then carry out either shallow and dig, so that muck is entered underground, so
4 solar days are shone into pool again afterwards, by the pool shone at interval of one abrupt slope of 40cm heap, abrupt slope height is 50cm, and slope ratio is
1:1.6, then in 2 knolls of intermediate heap in pool, slightly higher than water surface 5cm, the slope of knoll is than 1:1.5, finally again by water
The wire netting into discharge outlet with bore less than 1cm on the pool surrounds, then builds the anti-of 40cm in pool surrounding with materials such as plastics, metals
Escape wall.
Preferably, transplanting water plant and dispensing fishes and shrimps described in wherein：Put water plant in a suitable place to breed in pool, water plant covering surface is water
The 0.3 of pool surface product, wherein water plant is made of eel grass, green grass, hornwort, waterweed mixing, then puts in a suitable place to breed in pool small
Fishes and shrimps and shellfish, injected volume is 1000 per acre.
Preferably, the wherein juvenile crab selection：Juvenile crab should select neat specification, step it is complete, it is physical strong, creep
Healthy juvenile crab active, disease-free without wound.
Preferably, wherein the juvenile crab is put in a suitable place to breed：Juvenile crab is firstly placed in water and impregnates 3min, is placed after then taking out
10min is so repeated 3 times, after juvenile crab gradually suctions moisture and adapts to water temperature in launching such as pool, throw-in density 1000
Only/mu.
Preferably, the aquaculture management described in wherein：The feeding amount of crab feed is selected according to water temperature, and water temperature is in 10-15
DEG C when, feed weekly 2 times, each feeding amount is the 3% of crab total weight, and water temperature feeds weekly 3 times at 15-20 DEG C, every time
Feeding amount is the 4% of crab total weight, and water temperature is fed weekly 7 times at 20-25 DEG C, and each feeding amount is crab total weight
2%, water temperature constantly, is fed weekly 2 times at 25 DEG C or more, and each feeding amount is the 3% of crab total weight, each feeding selection of time
4 points of 8 a.m., afternoon, feed are launched in the water away from pool side 40cm, and daily the dissolved oxygen amount in regular check pool, pH and
Water transparency is adjusted in time, and guarantee dissolved oxygen amount will also be removed in rice field in 5ppm, pH 7.5, transparency in 40cm in time
Weeds and water in remaining feed, while it is primary at interval of 6d to change water, and it is primary that high temperature season 2d changes water, changes during water and controls
Water inlet flow velocity is 0.7m/s, and water outlet flow velocity is 0.5m/s, and quantity of exchanged water is no more than the 1/5 of raw water amount, and water temperature difference is no more than 3
DEG C, and keeping water level is 1m, applies during changing water and spills quick lime progress water transfer, per acre 10kg, during the shell of crab not
It carries out changing water.
Preferably, the wherein disease protection：When crab disease occurs, first three days are watered full pond with quick lime and sprinkle
It spills in 15ppm, furazolidone full pool spilling head 0.1ppm is used since the 4th day.
Preferably, the wherein crab fishing：In late September to November, using discharge water crabbing and night it is unarmed
The method of capture is caught.
Embodiment 2
A kind of cultural method of high yield crab, specifically comprises the following steps：Choose pool, pool arranges, transplants water plant and dispensing
Fishes and shrimps, juvenile crab selection, juvenile crab is put in a suitable place to breed, aquaculture management, disease are protected, crab fishing.
Preferably, the selection pool described in wherein：15 mu of illumination abundances are chosen, facilitates into draining, have abundant water resources, water quality
It is good it is pollution-free, dissolved oxygen amount is high, the pool of environment quiet, the depth of water is in 1.2m.
Preferably, wherein the pool arranges：The soil of the bottom in pool is ploughed deeply, after digging per acre
It is carried out disinfection, the pool sterilized is filled the water, depth of water 25cm using 7 kilograms of quick limes, stood 3d, sprinkled after then draining water
Then the sandy soil of 15cm are thrown again and apply one layer of muck, thickness 4cm, then carry out either shallow and dig, so that muck is entered underground, so
4 solar days are shone into pool again afterwards, by the pool shone at interval of one abrupt slope of 45cm heap, abrupt slope height is 60cm, and slope ratio is
1:1.8, then in 2 knolls of intermediate heap in pool, slightly higher than water surface 7cm, the slope of knoll is than 1:1.4, finally again by water
The wire netting into discharge outlet with bore less than 1cm on the pool surrounds, then builds the anti-of 45cm in pool surrounding with materials such as plastics, metals
Escape wall.
Preferably, transplanting water plant and dispensing fishes and shrimps described in wherein：Put water plant in a suitable place to breed in pool, water plant covering surface is water
The 0.35 of pool surface product, wherein water plant is made of eel grass, green grass, hornwort, waterweed mixing, then puts in a suitable place to breed in pool small
Fishes and shrimps and shellfish, injected volume is 1500 per acre.
Preferably, the wherein juvenile crab selection：Juvenile crab should select neat specification, step it is complete, it is physical strong, creep
Healthy juvenile crab active, disease-free without wound.
Preferably, wherein the juvenile crab is put in a suitable place to breed：Juvenile crab is firstly placed in water and impregnates 3min, is placed after then taking out
12min is so repeated 3 times, after juvenile crab gradually suctions moisture and adapts to water temperature in launching such as pool, throw-in density 1200
Only/mu.
Preferably, the aquaculture management described in wherein：The feeding amount of crab feed is selected according to water temperature, and water temperature is in 10-15
DEG C when, feed weekly 1 time, each feeding amount is the 4% of crab total weight, and water temperature feeds weekly 3 times at 15-20 DEG C, every time
Feeding amount is the 5% of crab total weight, and water temperature is fed weekly 10 times at 20-25 DEG C, and each feeding amount is crab total weight
2%, water temperature constantly, is fed weekly 2 times at 25 DEG C or more, and each feeding amount is the 4% of crab total weight, each feeding selection of time
At 9 points in the morning, at 4 points in afternoon, feed are launched in the water away from pool side 45cm, and daily the dissolved oxygen amount in regular check pool, pH and
Water transparency is adjusted in time, and guarantee dissolved oxygen amount will also be removed in rice field in 10ppm, pH 7.5, transparency in 50cm in time
Weeds and water in remaining feed, while it is primary at interval of 7d to change water, and it is primary that high temperature season 2d changes water, changes during water and controls
Water inlet flow velocity is 0.7m/s, and water outlet flow velocity is 0.5m/s, and quantity of exchanged water is no more than the 1/5 of raw water amount, and water temperature difference is no more than 4
DEG C, and keeping water level is 1.2m, applies during changing water and spills quick lime progress water transfer, per acre 12kg, during the shell of crab
Without changing water.
Preferably, the wherein disease protection：When crab disease occurs, first three days are watered full pond with quick lime and sprinkle
It spills in 17ppm, furazolidone full pool spilling head 0.15ppm is used since the 4th day.
Preferably, the wherein crab fishing：In late September to November, using discharge water crabbing and night it is unarmed
The method of capture is caught.
Embodiment 3
A kind of cultural method of high yield crab, specifically comprises the following steps：Choose pool, pool arranges, transplants water plant and dispensing
Fishes and shrimps, juvenile crab selection, juvenile crab is put in a suitable place to breed, aquaculture management, disease are protected, crab fishing.
Preferably, the selection pool described in wherein：20 mu of illumination abundances are chosen, facilitates into draining, have abundant water resources, water quality
It is good it is pollution-free, dissolved oxygen amount is high, the pool of environment quiet, the depth of water is in 1.5m.
Preferably, wherein the pool arranges：The soil of the bottom in pool is ploughed deeply, after digging per acre
It is carried out disinfection, the pool sterilized is filled the water, depth of water 30cm using 10 kilograms of quick limes, stood 4d, spread after then draining water
Then the sandy soil of upper 20cm are thrown again and apply one layer of muck, thickness 5cm, then carry out either shallow and dig, muck is made to enter underground,
Then 5 solar days are shone into pool again, by the pool shone at interval of one abrupt slope of 50cm heap, abrupt slope height is 70cm, slope ratio
It is 1:2.0, then in 3 knolls of intermediate heap in pool, slightly higher than water surface 10cm, the slope of knoll is than 1:1.3, finally again will
The wire netting into discharge outlet with bore less than 1cm in pool surrounds, then builds 50cm's in pool surrounding with materials such as plastics, metals
Anti-escape wall.
Preferably, transplanting water plant and dispensing fishes and shrimps described in wherein：Put water plant in a suitable place to breed in pool, water plant covering surface is water
The 0.4 of pool surface product, wherein water plant is made of eel grass, green grass, hornwort, waterweed mixing, then puts in a suitable place to breed in pool small
Fishes and shrimps and shellfish, injected volume is 2000 per acre.
Preferably, the wherein juvenile crab selection：Juvenile crab should select neat specification, step it is complete, it is physical strong, creep
Healthy juvenile crab active, disease-free without wound.
Preferably, wherein the juvenile crab is put in a suitable place to breed：Juvenile crab is firstly placed in water and impregnates 4min, is placed after then taking out
15min is so repeated 4 times, after juvenile crab gradually suctions moisture and adapts to water temperature in launching such as pool, throw-in density 1500
Only/mu.
Preferably, the aquaculture management described in wherein：The feeding amount of crab feed is selected according to water temperature, and water temperature is in 10-15
DEG C when, feed weekly 3 times, each feeding amount is the 4% of crab total weight, and water temperature feeds weekly 4 times at 15-20 DEG C, every time
Feeding amount is the 6% of crab total weight, and water temperature is fed weekly 14 times at 20-25 DEG C, and each feeding amount is crab total weight
3%, water temperature constantly, is fed weekly 3 times at 25 DEG C or more, and each feeding amount is the 4% of crab total weight, each feeding selection of time
At 10 points in the morning, at 5 points in afternoon, feed are launched in the water away from pool side 50cm, and daily the dissolved oxygen amount in regular check pool, pH and
Water transparency is adjusted in time, and guarantee dissolved oxygen amount will also be removed in rice field in 20ppm, pH 8.0, transparency in 60cm in time
Weeds and water in remaining feed, while it is primary at interval of 8d to change water, and it is primary that high temperature season 3d changes water, changes during water and controls
Water inlet flow velocity is 0.7m/s, and water outlet flow velocity is 0.5m/s, and quantity of exchanged water is no more than the 1/5 of raw water amount, and water temperature difference is no more than 5
DEG C, and keeping water level is 1.5m, applies during changing water and spills quick lime progress water transfer, per acre 15kg, during the shell of crab
Without changing water.
Preferably, the wherein disease protection：When crab disease occurs, first three days are watered full pond with quick lime and sprinkle
It spills in 20ppm, furazolidone full pool spilling head 0.2ppm is used since the 4th day.
Preferably, the wherein crab fishing：In late September to November, using discharge water crabbing and night it is unarmed
The method of capture is caught.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
It transforms or replaces, should be covered by the scope of protection of the present invention without what creative work was expected.
Claims (9)
1. a kind of cultural method of high yield crab, which is characterized in that specifically comprise the following steps：Choose pool, pool arranges, moves
It plants water plant and launches fishes and shrimps, juvenile crab selects, juvenile crab is put in a suitable place to breed, the protection of aquaculture management, disease, crab fishing.
2. a kind of cultural method of high yield crab as described in claim 1, which is characterized in that the selection pool：It chooses
10-20 mus of illumination are sufficient, facilitate into draining, have abundant water resources, water quality is well pollution-free, dissolved oxygen amount is high, the pool of environment quiet, water
Deeply in 1-1.5m.
3. a kind of cultural method of high yield crab as described in claim 1, which is characterized in that the pool arranges：By water
The soil of the bottom on the pool is ploughed deeply, and is carried out disinfection per acre using 5-10 kilograms of quick lime after digging, the water that will be sterilized
Pool water filling, depth of water 20-30cm stand 3-4d, the sandy soil of 10-20cm are sprinkled after then draining water, then throws again and applies one layer of excrement
Then fertilizer, thickness 4-5cm carry out either shallow and dig, so that muck is entered underground, 4-5 solar day then is shone in pool again, will
At interval of one abrupt slope of 40-50cm heap, abrupt slope height is 50-70cm in the pool shone, and slope ratio is 1:1.6-2.0, then in water
The 2-3 knoll of intermediate heap on the pool, slightly higher than water surface 5-10cm, slope ratio≤1 of knoll:1.5, finally again by pool into row
Wire netting of the mouth of a river with bore less than 1cm surrounds, then builds the anti-escape wall of 40-50cm in pool surrounding with materials such as plastics, metals.
4. a kind of cultural method of high yield crab as described in claim 1, which is characterized in that the transplanting water plant and dispensing
Fishes and shrimps：Put water plant in a suitable place to breed in pool, water plant covering surface is the 0.3-0.4 of pool area, and wherein water plant is by eel grass, green grass, gold
Fish algae, waterweed mixing form, and then put small fish and shrimp and shellfish in a suitable place to breed in pool, and injected volume is 1000-2000 per acre.
5. a kind of cultural method of high yield crab as described in claim 1, which is characterized in that the juvenile crab selection：Juvenile crab
Should select neat specification, step it is complete, it is physical strong, creep it is active, without hurting disease-free healthy juvenile crab.
6. a kind of cultural method of high yield crab as described in claim 1, which is characterized in that the juvenile crab is put in a suitable place to breed：By crab
Seedling, which is firstly placed in water, impregnates 3-4min, places 10-15min after then taking out, and so repeats 3-4 times, gradually suctions water to juvenile crab
Divide and launching after adapting to water temperature as in pool, throw-in density is 1000-1500/mu.
7. a kind of cultural method of high yield crab as described in claim 1, which is characterized in that the aquaculture management：Crab
The feeding amount of feed is selected according to water temperature, and water temperature is fed 2-3 times weekly at 10-15 DEG C, and each feeding amount is crab total weight
3-4%, water temperature feeds 3-4 times weekly at 15-20 DEG C, and each feeding amount is the 4-6% of crab total weight, and water temperature is in 20-25
DEG C when, feed 7-14 times weekly, each feeding amount is the 2-3% of crab total weight, and water temperature feeds weekly 2-3 at 25 DEG C or more
Secondary, each feeding amount is the 3-4% of crab total weight, each feeding selection of time morning 8-10 point, 4-5 point in afternoon, feed dispensing
In the water away from pool side 40-50cm, and dissolved oxygen amount, pH and the water transparency in regular check pool daily, it adjusts, protects in time
Card dissolved oxygen amount will also be removed in the weeds and water in rice field in 5-20ppm, pH 7.5-8.0, transparency in 40-60cm in time
Remaining feed, while it is primary at interval of 6-8d to change water, and it is primary that high temperature season 2-3d changes water, changes during water and controls water inlet stream
Speed is 0.7m/s, and water outlet flow velocity is 0.5m/s, and quantity of exchanged water is no more than the 1/5 of raw water amount, and water temperature difference is no more than 3-5 DEG C, and protects
Water holding position is 1-1.5m, applies during changing water and spills quick lime progress water transfer, per acre 10-15kg, during the shell of crab not
It carries out changing water.
8. a kind of cultural method of high yield crab as described in claim 1, which is characterized in that the disease protection：In crab
When crab disease occurs, first three days are watered full pool spilling head in 15-20ppm, with the full pond of furazolidone since the 4th day with quick lime
Splash 0.1-0.2ppm.
9. a kind of cultural method of high yield crab as described in claim 1, which is characterized in that the crab fishing：Nine
It is caught using the method for discharging water crabbing and night manually captures in month last ten-days period to November.
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