CN106818573A - Catch wild swimming crab sand basin fattening cultivation method in a kind of sea - Google Patents
Catch wild swimming crab sand basin fattening cultivation method in a kind of sea Download PDFInfo
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- CN106818573A CN106818573A CN201611243497.5A CN201611243497A CN106818573A CN 106818573 A CN106818573 A CN 106818573A CN 201611243497 A CN201611243497 A CN 201611243497A CN 106818573 A CN106818573 A CN 106818573A
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- 241001533364 Portunus trituberculatus Species 0.000 title claims abstract description 50
- 239000004576 sand Substances 0.000 title claims abstract description 21
- 238000012364 cultivation method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 238000003860 storage Methods 0.000 claims abstract description 86
- 239000013535 sea water Substances 0.000 claims abstract description 49
- 238000005276 aerator Methods 0.000 claims description 29
- 244000070406 Malus silvestris Species 0.000 claims description 19
- 238000005273 aeration Methods 0.000 claims description 12
- 230000037396 body weight Effects 0.000 claims description 7
- 230000001954 sterilising effect Effects 0.000 claims description 7
- 238000004659 sterilization and disinfection Methods 0.000 claims description 7
- 241000251468 Actinopterygii Species 0.000 claims description 6
- 239000000645 desinfectant Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000012286 potassium permanganate Substances 0.000 claims description 6
- 241000040710 Chela Species 0.000 claims description 5
- HEZMRBNCRSVIHU-UHFFFAOYSA-N calcium boric acid dihypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-].OB(O)O HEZMRBNCRSVIHU-UHFFFAOYSA-N 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 2
- 230000006866 deterioration Effects 0.000 abstract description 14
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 9
- 201000010099 disease Diseases 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 241000894006 Bacteria Species 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 238000009395 breeding Methods 0.000 abstract description 4
- 230000001488 breeding effect Effects 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 230000001364 causal effect Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 3
- 239000005416 organic matter Substances 0.000 abstract description 3
- 238000009360 aquaculture Methods 0.000 abstract description 2
- 244000144974 aquaculture Species 0.000 abstract description 2
- 241000894007 species Species 0.000 abstract description 2
- 239000003337 fertilizer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000004083 survival effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 241000252230 Ctenopharyngodon idella Species 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 235000005289 dietary characteristics Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 235000012631 food intake Nutrition 0.000 description 1
- 230000000366 juvenile effect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000008935 nutritious Nutrition 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001629 suppression Effects 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- 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
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/045—Filters for aquaria
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to aquaculture field, specifically disclose a kind of sea and catch wild swimming crab sand basin fattening cultivation method, including preparing storage pond, holding pond, water filling is sanded to storage pond, holding pond, select crab species, twice daily feeding, the female crab wherein selected from the capture of sea area crab pot can reduce the death rate and disability rate, and the female crab for having completed shell and having mated can realize high-density breeding；The air that dispersion is passed through improves dissolved oxygen amount to meet the aerobic characteristic of wild swimming crab, strengthens seawater disorder degree to suppress water quality deterioration；Circulating water pipeline accelerates seawater and updates flowing, suppresses water quality deterioration, and promote air to disperse；Water filter effectively removes the dirt such as organic matter in seawater, kills the causal organisms such as bacterium, reduces disease and occurs；The residual bait in storage pond, holding pond and sick and wounded crab are picked up in draining twice daily, suppress water quality deterioration and disease spread.Fall ill rate and the death rate of swimming crab are reduced in a word, and promote wild swimming crab fattens growth and quality, improves economic benefit.
Description
Technical field
The invention belongs to aquaculture field, and in particular to catch wild swimming crab sand basin fattening cultivation method in a kind of sea.
Background technology
Swimming crab also known as Portunus trituberculatus Miers, body pork is more, delicious, nutritious, be distributed in Bohai Sea Gulf, Jiangsu, Zhejiang,
The band of ALONG COASTAL FUJIAN one, is the main fished species of sea fishery, is also one of important outlet situation of selling well aquatic products of China.It is generally annual
9~October is the wild swimming crab of natural waterses prosperous hair season, but due to not arriving cream season long, and now the coefficient of condition of swimming crab is not
Foot, quality is relatively poor, cheap, and from the average price of fishing boat purchase is fished for less than 10 yuan/kilogram, some are also in shell
The wild swimming crab coefficient of condition of phase is too low and as soil fertility quality, can only cause the significant wastage of resource.If can be to this rank
The temporary raising fertilizer that the female crab of wild swimming crab is carried out 2~3 months is caught in the sea of section, improves the quality of swimming crab, then to Spring Festival listing, put down
Equal per kilogram price will be greatly improved the value that wild swimming crab is caught in sea up to 150~200 yuan.But because wild shuttle is caught in sea
Sub- crab adds that wild nature is stronger often due to operation and transportation are injured, and life habit and the swimming crab propagated artificially are not
Together, it is high to environment and food requirement, culturing pool water quality deterioration or other harm influences are also easily received, morbidity and mortality are high,
Reduce the temporary raising fertilizer efficiency benefit that wild swimming crab is caught in sea.
Chinese patent CN10610628A, a kind of pond natural, ecological cultural method of swimming crab of patent name, publication date
On November 16th, 2016, disclose one kind and put in a suitable place to breed to be formed altogether jointly by shuttle juvenile crab and shellfish, grass carp, shrimp seedling in cultivating pool
Unboiled water system simultaneously recycles the cultural method of nutriment, and the inside of cultivating pool is additionally provided with tank etc..But the pond nature
The cultivation object of ecological cultivation method is artificial swimming crab seedling, is not suitable for for fattening temporary breeding wild swimming crab, especially 9~10
The wild swimming crab adult in month.
The content of the invention
Wild nature for the wild swimming crab of existing marine capture is strong, high to breeding environment requirement, easily by water quality deterioration
Or harm influence and cause disease rate and death rate problem high, reduce wild swimming crab it is an object of the invention to provide one kind
Morbidity and mortality, the sea for improving coefficient of condition is caught the fattening cultivation method of wild swimming crab, improves sea and catch wild swimming crab
Economic worth.
The present invention provides following technical scheme：
Wild swimming crab sand basin fattening cultivation method is caught in a kind of sea, is comprised the following steps：
（1）Storage pond, holding pond prepares：Storage pond, holding pond（1）10~20 m wide, 20~40 m long, set some aerators in pond（3）, aerator
Through breather line and air pressure pump（4）It is connected, storage pond, holding pond bottom sets grit layer, and the thickness of grit layer is 15~25 cm, husky
The particle diameter of gravel is 0.6~1.2 cm, and the water purifying tank for holding seawater is provided with storage pond, holding pond side（2）, to spraying quality in storage pond, holding pond
Concentration is 1~4% Eusol sterilization, then exposure 3~5 days；
（2）Sand water filling：To the seawater injected in water purifying tank in the storage pond, holding pond after sterilization, the depth of water in storage pond, holding pond is kept to be higher by grit
40~50 cm of layer, by aerator to being passed through scattered air in storage pond, holding pond；
（3）Wild crab is selected and transport：The healthy wild swimming crab that 9~October captures from sea area crab pot is selected, class is selected
Type only and has completed shell and the female crab for mating for body weight at least 200 g/, and the foot of a chela of female crab is pinioned with rubber band, uses running water
Ship or running water car normal temperature are transported；
（4）Wild crab is delivered：Reject deformed limb, sick and wounded individuality and release rubber band, according to 20~30/m2Cultivation density will
Female crab is delivered in storage pond, holding pond and temporarily supports；
（5）Feedstuff feeding：The small fish bait of fridge freshness retaining twice is fed daily, by 4~10% of wild crab body weight in storage pond, holding pond
Weight feed, Feeding time is respectively morning 7~8 point, evening 6~7 point.
Selection has completed shell and the female crab that mated avoids cutting one another's throat between individuality, suitable highdensity cultivation.
Wild crab is directly tuned from the crab pot of sea area and by running water car or running water Ship Transportation, reduce the disability rate of wild crab and fall ill
Rate, the wild crab of health is more beneficial for improving survival rate.Seawater flows into storage pond, holding pond after entering water purifying tank removing poisonous and harmful substance,
The salinity of seawater, temperature are suitable, the growth of suitable wild shuttle.Aerator is favorably improved temporary supporting to air is passed through in storage pond, holding pond
Pond maritime interior waters dissolved oxygen amount, meets the aerobic characteristic of wild swimming crab.The air being passed through is disperseed to increased storage pond, holding pond maritime interior waters simultaneously
Disorderly flowing, promote sea water mixing, suppress the water quality deterioration of seawater, and improve the food-intake of wild swimming crab.Small fish is fitted
The dietary characteristic of suitable wild swimming crab, improves fattening effect.Sandy gravel stratum can meet the latent husky habit of wild swimming crab, particle diameter compared with
Big grit contributes to storage pond, holding pond bottom seawater and air flow, particularly avoids the accumulation that bottom of pond remains bait, keeps water quality good
It is good.
As it is of the invention preferably, aerator every 2 hours be aerated 1 hour, aeration rate be 0.8~1.5 m3/ h, aeration
The number of device is 6~10/mu.Oxygen content higher in the interruption aeration holding water of aerator, while setting multiple aerators
Contribute to the dispersion of wild swimming crab.
As of the invention preferred, in step（1）In also include set circulating water pipeline（5）, it is provided with circulating water pipeline
Water filter（51）, storage pond, holding pond and water filter be arranged in series in circulating water pipeline, and the seawater in storage pond, holding pond is with the body of 3~8%/h
Product flow is circulated through circulating water pipeline.
The part seawater circulation in storage pond, holding pond is flowed by setting circulating water pipe, to accelerate water body flow and renewal, suppression
Water quality deterioration processed, while promoting to be passed through the dispersed effect of air.The seawater that water purifier filtration in circulating water pipeline is flowed through,
The dirt such as organic matter in water removal is effectively removed, keeps storage pond, holding pond water quality good.
The potassium permanganate disinfectant that mass concentration is 0.3~0.5% is preferably added with water filter as of the invention, is filtered
The madial wall of hydrophone is provided with uviol lamp.By adding potassium permanganate disinfectant and setting uviol lamp, the seawater to flowing through goes out
Bacterium is sterilized, and kills the causal organisms such as bacterium, is reduced disease and is occurred.
Biological flocculant NOC-1 is preferably added in the seawater of water purifying tank as of the invention, the delivery port of water purifying tank is provided with
Filter screen.Microbial flocculant can effectively remove the poisonous and harmful substance in seawater, improve the clean-up performance of seawater.
Preferably drain seawater in storage pond, holding pond daily twice as of the invention, drain time be respectively morning 6~7 point,
Evening 5~6 point, pick up residual bait, dead crab, the sick and wounded crab in storage pond, holding pond after draining, then supplemented with the seawater in water purifying tank.In time
Draining simultaneously rejects residual bait and dead crab, sick and wounded crab, keeps the clean cleaning of storage pond, holding pond, suppresses water quality deterioration and disease spread, carries
The survival rate of wild swimming crab high.
Beneficial effects of the present invention are as follows：
Wild swimming crab sand basin fattening cultivation method is caught in sea of the invention, is had the following advantages：1）Select from the capture of sea area crab pot
Female crab can reduce the death rate and disability rate, and the female crab for having completed shell and having mated can high-density breeding；2）What dispersion was passed through
Air improves dissolved oxygen amount to meet the aerobic characteristic of wild crab, strengthens seawater disorder degree to suppress water quality deterioration；3）Recirculated water
Pipeline accelerates seawater and updates flowing, suppresses water quality deterioration, and promote air to disperse；4）Water filter effectively removes organic matter in seawater
Deng dirt, the causal organisms such as bacterium are killed, reduce disease and occur；5) residual bait and sick and wounded in storage pond, holding pond is picked up in draining twice daily
Crab, suppresses water quality deterioration and disease spread.In a word, sea of the invention is caught wild swimming crab sand basin fattening cultivation method and reduces shuttle
Fall ill rate and the death rate of sub- crab, promote wild swimming crab fattens growth and quality, improves economic benefit.
Brief description of the drawings
Fig. 1 is storage pond, holding pond of the invention and inlet and outlet pipe arrangement figure.
In figure：1st, storage pond, holding pond, 2, water purifying tank, 3, aerator, 4, air pressure pump, 5, circulating water pipeline, 51, water filter,
52nd, water pump, the direction of arrow is water body flow direction.
Specific embodiment
Specific embodiment of the invention is described further below：
If not refering in particular to, the raw material employed in the present invention is commercially available or commonly used in the art, if not refer in particular to, under
State the conventional method that the method in embodiment is this area.
Embodiment 1
Wild swimming crab sand basin fattening cultivation method is caught in a kind of sea, is comprised the following steps：
（1）Storage pond, holding pond prepares：10 m wide of storage pond, holding pond 1,20 m long, set aerator 3, preferably diaphragm type aerator, aeration in pond
The number of device is 6/mu, and aerator is connected through breather line with air pressure pump 4, and storage pond, holding pond bottom sets grit layer, grit
The thickness of layer is 15 cm, and the particle diameter of grit is 0.6 cm.It is to suppress water quality deterioration, sets comprising water filter 51 and water pump 52
Circulating water pipeline 5, storage pond, holding pond and water filter and water pump are arranged in series in circulating water pipeline, and the madial wall of water filter is provided with purple
Outer lamp, the water purifying tank 2 for holding seawater is provided with storage pond, holding pond side, and biological flocculant NOC-1, water purification are added in the seawater of water purifying tank
The delivery port in pond is provided with filter screen, is sterilized to the Eusol that storage pond, holding pond sprinkling mass concentration is 1%, then exposure 3 days；
（2）Sand water filling：To the seawater injected in water purifying tank in the storage pond, holding pond after sterilization, the depth of water in storage pond, holding pond is kept to be higher by grit
40 cm of layer, were aerated 1 hour to scattered air, aerator is passed through in storage pond, holding pond by aerator every 2 hours, each aeration
The aeration rate of device is 0.8 m3/ h, the seawater in storage pond, holding pond is circulated with the volume flow of 3%/h through circulating water pipeline, Xiang Liu
Through adding the potassium permanganate disinfectant that mass concentration is 0.3% in the seawater of water filter, addition is 0.5 g/m3。
（3）Wild crab is selected and transport：The healthy wild swimming crab that 9~October captures from sea area crab pot is selected, is chosen
Type is selected for the g/ of average weight 200 and shell and the female crab for mating has been completed, rubber band pinions the female crab foot of a chela, running water
Ship or running water car normal temperature are transported；
（4）Wild crab is delivered：Reject deformed limb, sick and wounded individuality and release rubber band, according to 30/m2Cultivation density by female crab
Deliver and temporarily support in storage pond, holding pond；
（5）Feedstuff feeding：The small fish bait of fridge freshness retaining twice is fed daily, by 4 % of wild crab body weight in storage pond, holding pond
Weight feeds, and Feeding time is respectively morning 7~8 point, evening 6~7 point.The daily seawater drained in storage pond, holding pond twice, is drained
Time is respectively morning 6~7 point, evening 5~6 point, residual bait, dead crab, sick and wounded crab in storage pond, holding pond is picked up after draining, then with net
Seawater supplement in pond, keeps the cm of the storage pond, holding pond depth of water 40.
Embodiment 2
Wild swimming crab sand basin fattening cultivation method is caught in a kind of sea, is comprised the following steps：
（1）Storage pond, holding pond prepares：15 m wide of storage pond, holding pond 1,30 m long, set aerator 3, preferably diaphragm type aerator, aeration in pond
The number of device is 8/mu, and aerator is connected through breather line with air pressure pump 4, and storage pond, holding pond bottom sets grit layer, grit
The thickness of layer is 20 cm, and the particle diameter of grit is 0.8 cm.It is to suppress water quality deterioration, sets comprising water filter 51 and water pump 52
Circulating water pipeline 5, storage pond, holding pond is arranged in series in circulating water pipeline with water filter and water pump, and the madial wall of water filter is provided with ultraviolet
Lamp, the water purifying tank 2 for holding seawater is provided with storage pond, holding pond side, and biological flocculant NOC-1, water purifying tank are added in the seawater of water purifying tank
Delivery port be provided with filter screen, sterilized to the Eusol that storage pond, holding pond sprinkling mass concentration is 2.5%, then exposure 4 days；
（2）Sand water filling：To the seawater injected in water purifying tank in the storage pond, holding pond after sterilization, the depth of water in storage pond, holding pond is kept to be higher by grit
Layer 45cm, was aerated 1 hour, each aerator to scattered air, aerator is passed through in storage pond, holding pond by aerator every 2 hours
Aeration rate be 1.2 m3/ h, the seawater in storage pond, holding pond is circulated with the volume flow of 5.5%/h through circulating water pipeline, Xiang Liu
Through adding the potassium permanganate disinfectant that mass concentration is 0.4% in the seawater of water filter, addition is 0.5 g/m3。
（3）Wild crab is selected and transport：The healthy wild swimming crab that 9~October captures from sea area crab pot is selected, is chosen
Type is selected for the g/ of average weight 250 and shell and the female crab for mating has been completed, rubber band pinions the female crab foot of a chela, running water
Ship or running water car normal temperature are transported；
（4）Wild crab is delivered：Reject deformed limb, sick and wounded individuality and release rubber band, according to 25/m2Cultivation density by female crab
Deliver and temporarily support in storage pond, holding pond；
（5）Feedstuff feeding：The small fish bait of fridge freshness retaining twice is fed daily, by 7% of wild crab body weight in storage pond, holding pond weight
Amount feeds, and Feeding time is respectively morning 7~8 point, evening 6~7 point.Seawater in storage pond, holding pond is drained daily twice, when draining
Between be respectively morning 6~7 point, evening 5~6 point, after draining pick up storage pond, holding pond in residual bait, dead crab, sick and wounded crab, then use water purification
Seawater supplement in pond, keeps the cm of the storage pond, holding pond depth of water 45.
Embodiment 3
Wild swimming crab sand basin fattening cultivation method is caught in a kind of sea, is comprised the following steps：
（1）Storage pond, holding pond prepares：20 m wide of storage pond, holding pond 1,40 m long, set aerator 3, preferably diaphragm type aerator, aeration in pond
The number of device is 10/mu, and aerator is connected through breather line with air pressure pump 4, and storage pond, holding pond bottom sets grit layer, grit
The thickness of layer is 25 cm, and the particle diameter of grit is 1.2 cm.It is to suppress water quality deterioration, sets comprising water filter 51 and water pump 52
Circulating water pipeline 5, water filter and water pump are arranged in series in circulating water pipeline more than storage pond, holding pond, and the madial wall of water filter is provided with ultraviolet
Lamp, the water purifying tank for holding seawater is provided with storage pond, holding pond side, and biological flocculant NOC-1, water purifying tank are added in the seawater of water purifying tank
Delivery port be provided with filter screen, sterilized to the Eusol that storage pond, holding pond sprinkling mass concentration is 4%, then exposure 5 days；
（2）Sand water filling：To the seawater injected in water purifying tank in the storage pond, holding pond after sterilization, the depth of water in storage pond, holding pond is kept to be higher by grit
50 cm of layer, were aerated 1 hour to scattered air, aerator is passed through in storage pond, holding pond by aerator every 2 hours, each aeration
The aeration rate of device is 1.5 m3/ h, the seawater in storage pond, holding pond is circulated with the volume flow of 8%/h through circulating water pipeline, Xiang Liu
Through adding the potassium permanganate disinfectant that mass concentration is 0.5% in the seawater of water filter, addition is 0.5 g/m3。
（3）Wild crab is selected and transport：The healthy wild swimming crab that 9~October captures from sea area crab pot is selected, is chosen
Type is selected for the g/ of average weight 300 and shell and the female crab for mating has been completed, rubber band pinions the female crab foot of a chela, running water
Ship or running water car normal temperature are transported；
（4）Wild crab is delivered：Reject deformed limb, sick and wounded individuality and release rubber band, according to 20/m2Cultivation density by female crab
Deliver and temporarily support in storage pond, holding pond；
（5）Feedstuff feeding：The small fish bait of fridge freshness retaining twice is fed daily, by 10% of wild crab body weight in storage pond, holding pond
Weight feeds, and Feeding time is respectively morning 7~8 point, evening 6~7 point.The daily seawater drained in storage pond, holding pond twice, is drained
Time is respectively morning 6~7 point, evening 5~6 point, residual bait, dead crab, sick and wounded crab in storage pond, holding pond is picked up after draining, then with net
Seawater supplement in pond, keeps the cm of the storage pond, holding pond depth of water 50.
By temporarily bringing up the survival rate 90~92% of the wild swimming crab of fertilizer, the g/ of average weight 450~550, wild shuttle
The market price of sub- crab is promoted to raising to 150~200 yuan/kilogram during the Spring Festival from 10 yuan/kilogram in original 9~October,
Remarkable in economical benefits is improved.
Claims (6)
1. wild swimming crab sand basin fattening cultivation method is caught in a kind of sea, is comprised the following steps：
（1）Storage pond, holding pond prepares：Storage pond, holding pond（1）10~20 m wide, 20~40 m long, set some aerators in pond（3）, aerator
Through breather line and air pressure pump（4）It is connected, storage pond, holding pond bottom sets grit layer, and the thickness of grit layer is 15~25 cm, husky
The particle diameter of gravel is 0.6~1.2 cm, and the water purifying tank for holding seawater is provided with storage pond, holding pond side（2）, to spraying quality in storage pond, holding pond
Concentration is 1~4% Eusol sterilization, then exposure 3~5 days；
（2）Sand water filling：To the seawater injected in water purifying tank in the storage pond, holding pond after sterilization, the depth of water in storage pond, holding pond is kept to be higher by grit
40~50 cm of layer, by aerator to being passed through scattered air in storage pond, holding pond；
（3）Wild crab is selected and transport：The healthy wild swimming crab that 9~October captures from sea area crab pot is selected, class is selected
Type only and has completed shell and the female crab for mating for body weight at least 200 g/, and the foot of a chela of female crab is pinioned with rubber band, uses running water
Ship or running water car normal temperature are transported；
（4）Wild crab is delivered：Reject deformed limb, sick and wounded individuality and release rubber band, according to 20~30/m2Cultivation density will be female
Crab is delivered in storage pond, holding pond and temporarily supports；
（5）Feedstuff feeding：The small fish bait of fridge freshness retaining twice is fed daily, by 4~10% of wild crab body weight in storage pond, holding pond
Weight feed, Feeding time is respectively morning 7~8 point, evening 6~7 point.
2. wild swimming crab sand basin fattening cultivation method is caught in a kind of sea according to claim 1, it is characterised in that aerator
It was aerated 1 hour every 2 hours, aeration rate is 0.8~1.5 m3/ h, the number of aerator is 6~10/mu.
3. wild swimming crab sand basin fattening cultivation method is caught in a kind of sea according to claim 1, it is characterised in that in step
（1）In also include set circulating water pipeline（5）, water filter is provided with circulating water pipeline（51）, storage pond, holding pond connects with water filter and sets
Put in circulating water pipeline, the seawater in storage pond, holding pond is circulated with the volume flow of 3~8%/h through circulating water pipeline.
4. wild swimming crab sand basin fattening cultivation method is caught in a kind of sea according to claim 3, it is characterised in that water filter
In be added with the potassium permanganate disinfectant that mass concentration is 0.3~0.5%, the madial wall of water filter is provided with uviol lamp.
5. wild swimming crab sand basin fattening cultivation method is caught in a kind of sea according to claim 1, it is characterised in that water purifying tank
Seawater in add biological flocculant NOC-1, the delivery port of water purifying tank is provided with filter screen.
6. wild swimming crab sand basin fattening cultivation method is caught in a kind of sea according to claim 1, it is characterised in that arranged daily
Twice, drain time is respectively morning 6~7 point, evening 5~6 point to seawater in dry storage pond, holding pond, is picked up in storage pond, holding pond after draining
Residual bait, dead crab, sick and wounded crab, are then supplemented with the seawater in water purifying tank.
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| CN112273300A (en) * | 2020-11-02 | 2021-01-29 | 宁德市鼎诚水产有限公司 | Method for improving survival rate of wild blue crabs |
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