CN107810895A - A kind of big fence surface temporarily supports the cultural method of river crab - Google Patents
A kind of big fence surface temporarily supports the cultural method of river crab Download PDFInfo
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- CN107810895A CN107810895A CN201711080051.XA CN201711080051A CN107810895A CN 107810895 A CN107810895 A CN 107810895A CN 201711080051 A CN201711080051 A CN 201711080051A CN 107810895 A CN107810895 A CN 107810895A
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- crab
- water
- purse seine
- big
- breed
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; 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
Abstract
The cultural method of river crab is temporarily supported the invention discloses a kind of big fence surface, is comprised the following steps：Selection Cultivated water, purse seine, sterilization of leaving nothing usable to the invading enemy, juvenile crab is set to put in a suitable place to breed, the daily management of purse seine area and crab species culture on open lake.A kind of big fence surface provided by the invention temporarily supports the cultural method of river crab, has the advantages that：1. realizing and descending seedling in advance, extend the culture-cycle；2. the seedlings of milieu crab in purse seine is launched again after pasture and water well-grown big specification culture of Chinese mitten crab is carried out into reservoir, to ensure the sustainable use of reservoir pasture and water.
Description
Technical field
The present invention relates to aquaculture technical field, and in particular to a kind of big fence surface temporarily supports the cultivation side of river crab
Method.
Background technology
Eriocheir sinensis is commonly called as river crab (hereinafter referred to as river crab), is the distinctive famous-brand and high-quality aquatic products in China, is mainly distributed on me
State the Changjiang river, the Liaohe River, Oujiang River, there is very high economic value and nutritive value.In recent years, crab farming is in adjustment rural area
The industrial structure, promote to have played important function in terms of increasing peasant income, culture of Chinese mitten crab turned into and developed most in China's fish production already
For one of rapid, most characteristic, most potential pillar industry.
Xinjiang region possesses many aboundresources, stable level, is adapted to the big water surface of being engaged in culture of Chinese mitten crab, in recent years,
Xinjiang each department start to develop lake crab farming successively, wherein full boundary river crab yield was up to more than 600 tons in 2015.But at present,
Full boundary river crab either cultivates specification and yield with interior larger gap all the time, occur cultivation into crab is small, poor quality, valency
Lattice are low to wait a series of problems, turns into the bottleneck problem for restricting Xinjiang region river crab industry development.This is primarily due to the gas in Xinjiang
Time has and interiorly entirely different distinguishing feature：1. Xinjiang region freezeup period, is longer, general annual by the end of November to opening at the beginning of 12 months
Beginning water body freezes, and late March early April thaws completely, and growth period, which will be significantly shorter than, interiorly, causes the cultivation specification of river crab universal
Smaller, cultured output is generally relatively low, have impact on the raising of full boundary culture of Chinese mitten crab benefit.But the simultaneously as illumination of Xinjiang region
Very good, water temperature lifting is very fast, thus, grasp its climate characteristic for being engaged in that culture of Chinese mitten crab must be perfectly clear in Xinjiang,
Formulation is put in a suitable place to breed and fishing plan, and it serves conclusive for the success or failure that cultivate then.2. blindness puts juvenile crab also face in advance
Face urgent problem to be solved.Because the pasture and water of cultivation reservoir in Xinjiang region March~April or lake have just germinateed, pasture and water do not have also
Have to form larger yield, although the growth period of juvenile crab can be extended by now launching river crab, because the juvenile crab of dispensing needs the 1-2 months
Water body environment is adapted to, during this period, juvenile crab is selects suitable growing environment, and scope of activities and activity are larger, Yi Zao
Into the bacillus exfoliation of firm germination pasture and water, by 2-3 culture of Chinese mitten crab, the waterweeds resource of reservoir may be caused persistently to reduce even
It is exhausted.Thus how to solve the contradictory problems between juvenile crab Feeding time and pasture and water growth time, ensureing reservoir culture benefit
While, the sustainable development and utilization of realizing reservoir natural resources are particularly important.
The content of the invention
The purpose of the present invention aiming at it is above-mentioned in the prior art the defects of, there is provided a kind of big fence surface temporarily support river crab
Cultural method, by surrounding Zan Yang areas with purse seine in the big water surface, when big water surface pasture and water are not fully grown-up to also, crab species are put
Enter and the method that crab species are temporarily supported is carried out in net cage, seedling is descended in realization in advance, extends the culture-cycle.Meanwhile treat first arrival in June the middle ten days reservoir water
The seedlings of milieu crab in purse seine is launched again after careless well-grown big specification culture of Chinese mitten crab is carried out into reservoir, to ensure reservoir pasture and water
Sustainable use.
To achieve these goals, technical scheme provided by the invention is：A kind of big fence surface temporarily supports the cultivation of river crab
Method, comprise the following steps：
1) Cultivated water is selected：More than 500 mu of water surface area, the big water surface of 0.8~3.0 meter of the depth of water are selected as cultivation water
Domain, dredge into discharge conduit, repair into emptying gate, repair surrounding embankment；Select bottom flat, water quality clear in Cultivated water
Newly, dissolved oxygen enriches, water body exchanges sufficient, stable level and is maintained at 1.0~1.5 meters of waters as river crab purse seine Zan Yang areas
Domain；2) purse seine is set：Purse seine setting area is 20~30 mu, and purse seine uses two layers of nylon wire, and outer layer is catch net, and internal layer is anti-
Escape net, topmost connect " T " font, a width of 20~40 centimetres of rigid plastics film on the inside of anti-escape network, the bottom of anti-escape network connects
Gabion is simultaneously embedded in bed mud, 30 centimetres of length of embedment；Net encloses to be fixed with timber or bamboo pole in outside, and timber or bamboo pole spacing are 2
~3 meters, purse seine is highly 3 meters；
3) leave nothing usable to the invading enemy sterilization：Juvenile crab is put in a suitable place to breed first 10 days, is uniformly splashed after quick lime water in purse seine, and quick lime dosage is
100~150,000 grams/acre；Large-scale wild fishes in purse seine is purged again with silk screen or cage within 3 days after sterilization；
4) juvenile crab is put in a suitable place to breed：The time is put in a suitable place to breed in mid-March to the beginning of April, selects fine, is carried out during more than 14 DEG C of water temperature；
100~200/kg of juvenile crab specification, first crab species are put into the salt solution that mass concentration is 0.8% when putting in a suitable place to breed and soaked 1 minute, are taken out
Place into salt solution and soak 2 minutes after placing 5 minutes, further take out and place 10 minutes, place into what is set after 2~3 times repeatedly
Temporarily in foster waters；
5) purse seine area daily management：
A) bait throwing in species：Choose vegetal bait and animal bait is fed；Vegetal bait is duckweed, horse-eye (bean)
Dish, sweet potato, pumpkin and soybean, animal bait are chilled fish or spiral shell；
B) feeding volume：Day feeding volume is the 3%~5% of juvenile crab body weight, bait throwing in progress per natural gift 2 times, is thrown during morning 9-10
Feed once, feed at dusk once, feeding volume accounts for the 30% and 70% of day feeding volume respectively；
C) daily management：Sooner or later patrol, the activity of observation river crab, food situation, adjust daily ration, feeding quantity in time and remove residual bait；It is fixed
Phase checks, repairs escaping-preventing facilities, to prevent purse seine damages and escapes crab；
6) crab species culture on open lake：Treat the first arrival the middle ten days in June, crab species are put into the big water surface by pasture and water after growing fine from purse seine
Put in a suitable place to breed.
Further, a kind of above-mentioned big fence surface temporarily supports the cultural method of river crab, the cultivation in described step (1)
Waters selection is rich pasture and water, benthon and spiral shell aboundresources, violent predacious fish stock number is small, periphery is free of contamination
Lake, the big water surface of reservoir.
A kind of big fence surface provided by the invention temporarily supports the cultural method of river crab, has the advantages that：1. realize
Seedling is descended in advance, extends the culture-cycle；Carried out greatly into reservoir 2. again launching the seedlings of milieu crab in purse seine after pasture and water well-grown
Specification culture of Chinese mitten crab, to ensure the sustainable use of reservoir pasture and water.
Brief description of the drawings
Fig. 1 is shown as the structural relation schematic diagram of purse seine of the present invention.
Wherein, 1-rigid plastics film, 2-timber or bamboo pole, 3-nylon wire, 4-gabion.
Embodiment
Embodiment 1：
A kind of big fence surface temporarily supports the cultural method of river crab, comprises the following steps：
1) Cultivated water is selected：More than 500 mu of water surface area, the big water surface of 0.8~3.0 meter of the depth of water are selected as cultivation water
Domain, Cultivated water selection is pasture and water are rich, benthon and spiral shell aboundresources, violent predacious fish stock number are small, periphery
Free of contamination lake, the big water surface of reservoir；Dredge into discharge conduit, repair into emptying gate, repair surrounding embankment；In Cultivated water
Middle selection bottom flat, water quality is pure and fresh, dissolved oxygen is abundant, water body exchanges sufficient, stable level and the water for being maintained at 1.0~1.5 meters
Region is temporarily supported as river crab purse seine in domain；
2) purse seine is set：Purse seine setting area is 20~30 mu, and purse seine uses two layers of nylon wire, and outer layer is catch net, interior
Layer is anti-escape network, topmost connects " T " font, a width of 20~40 centimetres of rigid plastics film on the inside of anti-escape network, anti-escape network is most
Lower termination gabion is simultaneously embedded in bed mud, 30 centimetres of length of embedment；Net encloses to be fixed with timber or bamboo pole in outside, between timber or bamboo pole
Away from for 2~3 meters, purse seine is highly 3 meters；The structural relation of purse seine is shown in accompanying drawing；
3) leave nothing usable to the invading enemy sterilization：Juvenile crab is put in a suitable place to breed first 10 days, is uniformly splashed after quick lime water in purse seine, and quick lime dosage is
100~150,000 grams/acre；Large-scale wild fishes in purse seine is purged again with silk screen or cage within 3 days after sterilization；
4) juvenile crab is put in a suitable place to breed：The time is put in a suitable place to breed in mid-March to the beginning of April, selects fine, is carried out during more than 14 DEG C of water temperature；
100~200/kg of juvenile crab specification, first crab species are put into the salt solution that mass concentration is 0.8% when putting in a suitable place to breed and soaked 1 minute, are taken out
Place into salt solution and soak 2 minutes after placing 5 minutes, further take out and place 10 minutes, place into what is set after 2~3 times repeatedly
Temporarily in foster waters；
5) purse seine area daily management：
A) bait throwing in species：Choose vegetal bait and animal bait is fed；Vegetal bait is duckweed, horse-eye (bean)
Dish, sweet potato, pumpkin and soybean, animal bait are chilled fish or spiral shell；
B) feeding volume：Day feeding volume is the 3%~5% of juvenile crab body weight, bait throwing in progress per natural gift 2 times, is thrown during morning 9-10
Feed once, feed at dusk once, feeding volume accounts for the 30% and 70% of day feeding volume respectively；
C) daily management：Sooner or later patrol, the activity of observation river crab, food situation, adjust daily ration, feeding quantity in time and remove residual bait；It is fixed
Phase checks, repairs escaping-preventing facilities, to prevent purse seine damages and escapes crab；
6) crab species culture on open lake：Treat the first arrival the middle ten days in June, crab species are put into the big water surface by pasture and water after growing fine from purse seine
Put in a suitable place to breed.
Culture on open lake is first carried out by the way of being caught from Zan Yang areas with cage, and average size, primary Calculation is temporarily formed
Motility rate, purse seine is directly removed after cage amount of fishing is few.Through measuring and calculating, seining cultivation harvesting and harvest situation are as shown in table 1.Table 1
It is shown as river crab seining cultivation and harvest situation.Table 2 is shown as different breeding pattern reservoir pasture and water growing state.
The river crab seining cultivation of table 1 and harvest situation
The different breeding pattern reservoir pasture and water growing state of table 2
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (2)
1. a kind of big fence surface temporarily supports the cultural method of river crab, it is characterised in that comprises the following steps：
1) Cultivated water is selected：More than 500 mu of water surface area, the big water surface of 0.8~3.0 meter of the depth of water are selected as Cultivated water,
Dredge into discharge conduit, repair into emptying gate, repair surrounding embankment；Selected in Cultivated water bottom flat, water quality it is pure and fresh,
Dissolved oxygen is abundant, water body exchanges sufficient, stable level and is maintained at 1.0~1.5 meters of waters as the temporary foster region of river crab purse seine；
2) purse seine is set：Purse seine setting area is 20~30 mu, and purse seine uses two layers of nylon wire, and outer layer is catch net, and internal layer is
Anti-escape network, anti-escape network inner side topmost connect " T " font, a width of 20~40 centimetres of rigid plastics film, the bottom of anti-escape network
Connect gabion and be embedded in bed mud, 30 centimetres of length of embedment；Net encloses to be fixed with timber or bamboo pole in outside, and timber or bamboo pole spacing are
2~3 meters, purse seine is highly 3 meters；
3) leave nothing usable to the invading enemy sterilization：Juvenile crab is put in a suitable place to breed first 10 days, is uniformly splashed after quick lime water in purse seine, quick lime dosage be 100~
150000 grams/acre；Large-scale wild fishes in purse seine is purged again with silk screen or cage within 3 days after sterilization；
4) juvenile crab is put in a suitable place to breed：The time is put in a suitable place to breed in mid-March to the beginning of April, selects fine, is carried out during more than 14 DEG C of water temperature；Juvenile crab
100~200/kg of specification, first crab species are put into the salt solution that mass concentration is 0.8% when putting in a suitable place to breed and soaked 1 minute, takes out and places
Place into salt solution and soak 2 minutes after 5 minutes, further take out placement 10 minutes, place into temporarily supporting of setting after 2~3 times repeatedly
In waters；
5) purse seine area daily management：
A) bait throwing in species：Choose vegetal bait and animal bait is fed；Vegetal bait be duckweed, horse-eye (bean) dish,
Sweet potato, pumpkin and soybean, animal bait are chilled fish or spiral shell；
B) feeding volume：Day feeding volume is the 3%~5% of juvenile crab body weight, bait throwing in progress per natural gift 2 times, feeds one during morning 9-10
It is secondary, feed at dusk once, feeding volume accounts for the 30% and 70% of day feeding volume respectively；
C) daily management：Sooner or later patrol, the activity of observation river crab, food situation, adjust daily ration, feeding quantity in time and remove residual bait；Periodically inspection
Look into, repair escaping-preventing facilities, to prevent purse seine damages and escapes crab；
6) crab species culture on open lake：Treat the first arrival the middle ten days in June, crab species are put into the big water surface from purse seine after growing fine and carried out by pasture and water
Put in a suitable place to breed.
2. a kind of big fence surface according to claim 1 temporarily supports the cultural method of river crab, it is characterised in that：Described step
Suddenly the Cultivated water selection in (1) is rich pasture and water, benthon and spiral shell aboundresources, violent predacious fish stock number
Small, the free of contamination lake in periphery, the big water surface of reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080051.XA CN107810895A (en) | 2017-11-06 | 2017-11-06 | A kind of big fence surface temporarily supports the cultural method of river crab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080051.XA CN107810895A (en) | 2017-11-06 | 2017-11-06 | A kind of big fence surface temporarily supports the cultural method of river crab |
Publications (1)
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| CN107810895A true CN107810895A (en) | 2018-03-20 |
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| CN201711080051.XA Pending CN107810895A (en) | 2017-11-06 | 2017-11-06 | A kind of big fence surface temporarily supports the cultural method of river crab |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101715748A (en) * | 2009-10-27 | 2010-06-02 | 中国水产科学研究院淡水渔业研究中心 | Combined netting gear for culturing river crabs in purse seine in lake |
| CN102550462A (en) * | 2012-02-17 | 2012-07-11 | 湖南三兄特色农业开发有限公司 | Method for cultivating river crabs in large-surfaced open waters |
| CN104521818A (en) * | 2014-12-02 | 2015-04-22 | 程诚 | River crab lake area net-enclosure culturing method |
-
2017
- 2017-11-06 CN CN201711080051.XA patent/CN107810895A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101715748A (en) * | 2009-10-27 | 2010-06-02 | 中国水产科学研究院淡水渔业研究中心 | Combined netting gear for culturing river crabs in purse seine in lake |
| CN102550462A (en) * | 2012-02-17 | 2012-07-11 | 湖南三兄特色农业开发有限公司 | Method for cultivating river crabs in large-surfaced open waters |
| CN104521818A (en) * | 2014-12-02 | 2015-04-22 | 程诚 | River crab lake area net-enclosure culturing method |
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Application publication date: 20180320 |