CN102077788B - Method for improving culture survival rate of river crabs by using climbing device - Google Patents
Method for improving culture survival rate of river crabs by using climbing device Download PDFInfo
- Publication number
- CN102077788B CN102077788B CN2010105520409A CN201010552040A CN102077788B CN 102077788 B CN102077788 B CN 102077788B CN 2010105520409 A CN2010105520409 A CN 2010105520409A CN 201010552040 A CN201010552040 A CN 201010552040A CN 102077788 B CN102077788 B CN 102077788B
- Authority
- CN
- China
- Prior art keywords
- water
- net sheet
- climbing device
- pasture
- survival rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Farming Of Fish And Shellfish (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention relates to a method for improving culture survival rate of river crabs by using a climbing device, in particular to a method for improving the raising survival rate of river crabs in a pond or other water areas. The method comprises three steps of constructing the climbing device, setting density for net sheets and hanging the net sheets. When water plants excessively grow, the river crabs can climb out of the water surface, so death of the river crabs due to oxygen deficit is prevented. The method can provide a climbing shelter for shelling of the river crabs, prevent the river crabs from being killed by the same species, prevent the water plants from covering the passage and ensure up-and-down convection of the water body, is favorable for improving the oxygen dissolution condition of the water bottom, and can reduce the cost and labor intensity of frequently clearing the water plants. By adopting the technology, the method is favorable for improving the culture survival rate, yield and benefit of the river crabs.
Description
Technical field
The present invention relates to a kind of method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate, specifically belong to river crab and in pond or other waters, improve a kind of method of culturing survival rate in the feeding process.
Background technology
The river crab formal name used at school is Eriocheir sinensia Eriocheir Sinensis H.Milne Edwards, is one of economic kind of China's high-quality aquatic products.Since the last century the eighties, China has carried out propagating artificially of river crab, has formed the production system of industrialization at present.Along with the expansion of the scale of breed, culture of Chinese mitten crab has formed various modes such as pond culture, paddy field aquaculture, seining cultivation, river course breed and reservoir breed, can be divided into ecologic breeding, intensive culture and extensive style breed on the type from culturing.No matter be which kind of aquaculture model or type, the survival rate of culture of Chinese mitten crab is the important indicator that influences output and benefit raising all the time.
For improving cultured output and reducing the incidence of disease, the ecologic breeding of river crab has become the breeding way that generally adopts at present, and its breeding technique flow process is: at the bottom of 1. clear up and sterilize breeding water body and the pond; 2. water filling is filtered; 3. plant pasture and water; 4. choose the high-quality juvenile crab; 5. throw in artitificial food and spiral shell; 6. improve cultivation water environment and ecology; 7. remove harmful animal and diseases prevention; 8. fish for.The plantation pasture and water are indispensable sport technique segments in the culture of Chinese mitten crab process in the abovementioned technology, and this is because pasture and water have following function: the bait that 1. can be used as river crab; 2. pasture and water can be used as the things concealed of river crab; 3. water temperature shaded and reduced to pasture and water can, makes the water temperature in summer be unlikely to too high; 4. pasture and water can absorb the nutritive salt in the water, help the ecological balance and the improvement of water quality.Therefore pasture and water growing way and density are directly connected to the raising of river crab survival rate and cultured output.But the convection current up and down of unfavorable water body behind the pasture and water raised growth; The situation of the local anoxic of bottom water body very easily takes place in high temperature season; The overgrowing of pasture and water has simultaneously reduced the activity space of river crab; Be unfavorable for the river crab artificial feed of looking for food, when water body generation anoxic, river crab climbing and escape all very difficulty from the pasture and water clump of gathering.In addition, pasture and water were rotted because of lacking illumination bottom the overgrowing of pasture and water also can cause, very easily caused the crab disease.Control method to the pasture and water overgrowing mainly contains at present: 1. regularly carry out manual work and cut off; 2. in the pasture and water clump, leave passage; 3. throw in the oxygenation powder; 4. set up the micropore aerator; 5. reduce cultivation density; 6. reducing bait throws in.To preventing that river crab anoxic and morbidity from truly having effect preferably, but the pasture and water of cutting off will soon cover by pasture and water with the artificial passage of leaving said method when pasture and water overgrow, and remove pasture and water when useless again and useless worker, untimely slightly dead crab will be taken place.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point; Thereby a kind of method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate is provided; The setting of the device of this river crab climbing; River crab can be sought connections with on this device when water hypoxia or shell, reducing lethality that river crab causes by anoxic and to kill each other rate, thereby improve the output and the benefit of culture of Chinese mitten crab.
A kind of method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate of the present invention, adopt following processing step: this processing step comprises that climbing device makes up, the net sheet is provided with density, the hang three big steps of net sheet, and characteristic is:
(1), climbing device makes up: comprise the selection of net sheet, net chip architecture and the setting of net sheet; It is to choose mesh 0.5-1.5 centimetre polyvinyl chloride net sheet that said net sheet is selected; Said net chip architecture is the strip net sheet with net sheet cutting growth 5-50 rice, width 0.8-2.0 rice; The setting of said net sheet is that the net sheet is hung vertically in the breeding water body in pond, and every interval 2-5 rice is fixed with the bamboo stake; The diameter of said bamboo stake is 2.5-8.0 centimetre, highly is 1.5-2.2 rice;
(2), density is set: every interval 5-30 rice is left the passage of a wide 1-3 rice in the pasture and water clump of breeding water body, and the pasture and water in the passage must be cleaned out, and the passage both sides respectively are provided with a parallel climbing device;
(3), the hang of net sheet: the headline of net sheet is fixed on the bamboo stake position concordant with the water surface, can move up and down, and middle guiding principle and infraclass are fixed in the bamboo stake, and infraclass is fixed at the bottom of the pond in 20-50 centimetre the bamboo stake; Said headline is raised to the higher plane of principle concordant with the pond water surface in 6-10 month with the concordant net sheet of vertical laying that is meant of the water surface; The pond depth of water in said 6-10 month is 1.5-2.2 rice.
Said climbing device is to supply river crab when water hypoxia, to climb out the water surface, climbs in the time of simultaneously also can supplying the river crab shell, to reduce the probability that soft crab is killed and devour after the shell.
Passage in the said pasture and water clump is to adopt artificial method to remove the passageway that forms behind the pasture and water in the certain limit, this passageway can increase water body up and down to flow, can be used as the passage of bait feeding simultaneously, be beneficial to looking for food of river crab.
Described passage both sides respectively are provided with the net sheet that can supply climb can play the effect of isolating pasture and water, prevents that pasture and water from spreading to passage, to guarantee the unimpeded of passage.
The fixed position that described net sheet is raised to the higher plane of principle in the bamboo stake can just be regulated according to water level by manual work, and the net sheet is raised to the higher plane of principle and upwards carried when being meant the water level rise, during water level depression, raises to the higher plane of principle to decline, to guarantee that netting sheet raises to the higher plane of principle concordant with water surface maintenance all the time.
Compared with present technology the present invention has the following advantages:
1, the present invention can supply river crab to climb out the water surface when pasture and water overgrow, and prevents its hypoxia death.2, the things concealed of climbing can be provided for the river crab shell, prevent by residual similar cannibalisation.3, can prevent that pasture and water from covering passage, guarantee water body convection current up and down, help the improvement of water-bed dissolved oxygen situation.4, can reduce cost and the labour intensity of frequent cleaning pasture and water.5, help improving culture of Chinese mitten crab survival rate, output and benefit.
Description of drawings:
Fig. 1 is a climbing device structural representation of the present invention:
Embodiment:
As shown in Figure 1, comprise headline 1, middle guiding principle 2, infraclass 3, bamboo stake 4 and net sheet 5.
Embodiment one:
A kind of method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate of the present invention, the processing step of employing is following:
1, every mu of water surface is cleaned up the pond with 120 kilogram of raw lime, and week back employing 60 mesh sieve thin,tough silk filter water filling, and the water filling degree of depth is 20 centimetres, transplants waterweed then, and the spacing of every cave pasture and water is 1 meter, and the coverage rate of pasture and water is 60%.Along with the growths of pasture and water progressively adds high water level, treat that water level begins to make up the climbing device that is made up by the net sheet when reaching 1 meter.
Climbing device makes up: choose the polyvinyl chloride net sheet of 1.0 centimetres of meshes, with the strip net sheet of 10 meters of net sheet cutting growth, 1.5 meters of width.To net sheet and be hung vertically in the pond, and 3 meters at every interval fixes with the bamboo stake, the diameter of bamboo stake is 3.0 centimetres, highly is 2.0 meters.
Density is set: a wide passage of 2 meters is left for 10 meters in every interval in the pasture and water clump of breeding water body, and the pasture and water in the cleaning passage, and a parallel climbing device respectively is set in the passage both sides then;
The hang of net sheet: the headline 1 of net sheet 5 is fixed on bamboo stake 4 positions concordant with the water surface, can move up and down, and middle guiding principle 2 is fixed in the bamboo stake 4 with infraclass 3, and infraclass 3 is fixed at the bottom of the pond in 25 centimetres the bamboo stake 4, and it is 1 concordant with the water surface to raise to the higher plane of principle.Climbing device can supply river crab when water hypoxia, to climb out the water surface, climbs in the time of simultaneously also can supplying the river crab shell, to reduce the probability that soft crab is killed and devour after the shell.The pasture and water of passage both sides are netted no longer to be covered by pasture and water after sheet separates, and can increase water body up and down to flow, can be used as the passage of bait feeding simultaneously.Can the net sheet be raised to the higher plane of principle when improving and upwards mention and be fixed in the bamboo stake when culturing water level, height is concordant with the water surface, during water level depression, raises to the higher plane of principle to decline, make headline all the time with keep the water surface concordant.
Embodiment two:
A kind of method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate of the present invention, the processing step of employing is following:
1, every mu of water surface is cleaned up the pond with 120 kilogram of raw lime, and week back employing 60 mesh sieve thin,tough silk filter water filling, and the water filling degree of depth is 20 centimetres, transplants waterweed then, and the spacing of every cave pasture and water is 1 meter, and the coverage rate of pasture and water is 60%.Along with the growths of pasture and water progressively adds high water level, treat that water level begins to make up the climbing device that is made up by the net sheet when reaching 1 meter.
Climbing device makes up: choose the polyvinyl chloride net sheet of 0.8 centimetre of mesh, with the strip net sheet of 20 meters of net sheet cutting growth, 1.5 meters of width.To net sheet and be hung vertically in the pond, and 3 meters at every interval fixes with the bamboo stake, the diameter of bamboo stake is 2.5 centimetres, highly is 1.8 meters.
Density is set: a wide passage of 3 meters is left for 8 meters in every interval in the pasture and water clump of breeding water body, and the pasture and water in the cleaning passage, and a parallel climbing device respectively is set in the passage both sides then;
The hang of net sheet: the headline 1 of net sheet 5 is fixed on bamboo stake 4 positions concordant with the water surface, can move up and down, and middle guiding principle 2 is fixed in the bamboo stake 4 with infraclass 3, and infraclass 3 is fixed at the bottom of the pond in 20 centimetres the bamboo stake 4, and it is 1 concordant with the water surface to raise to the higher plane of principle.Climbing device can supply river crab when water hypoxia, to climb out the water surface, climbs in the time of simultaneously also can supplying the river crab shell, to reduce the probability that soft crab is killed and devour after the shell.The pasture and water of passage both sides are netted no longer to be covered by pasture and water after sheet separates, and can increase water body up and down to flow, can be used as the passage of bait feeding simultaneously.Can the net sheet be raised to the higher plane of principle when improving and upwards mention and be fixed in the bamboo stake when culturing water level, height is concordant with the water surface, during water level depression, raises to the higher plane of principle to decline, make headline all the time with keep the water surface concordant.
Embodiment three:
A kind of method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate of the present invention, the processing step of employing is following:
1, every mu of water surface is cleaned up the pond with 120 kilogram of raw lime, and week back employing 60 mesh sieve thin,tough silk filter water filling, and the water filling degree of depth is 20 centimetres, transplants waterweed then, and the spacing of every cave pasture and water is 1 meter, and the coverage rate of pasture and water is 60%.Along with the growths of pasture and water progressively adds high water level, treat that water level begins to make up the climbing device that is made up by the net sheet when reaching 1 meter.
Climbing device makes up: choose the polyvinyl chloride net sheet of 1.2 centimetres of meshes, with the strip net sheet of 15 meters of net sheet cutting growth, 1.8 meters of width.To net sheet and be hung vertically in the pond, and 4 meters at every interval fixes with the bamboo stake, the diameter of bamboo stake is 3.5 centimetres, highly is 2.0 meters.
Density is set: a wide passage of 3 meters is left for 15 meters in every interval in the pasture and water clump of breeding water body, and the pasture and water in the cleaning passage, and a parallel climbing device respectively is set in the passage both sides then;
The hang of net sheet: the headline 1 of net sheet 5 is fixed on bamboo stake 4 positions concordant with the water surface, can move up and down, and middle guiding principle 2 is fixed in the bamboo stake 4 with infraclass 3, and infraclass 3 is fixed at the bottom of the pond in 30 centimetres the bamboo stake 4, and it is concordant with the water surface to raise to the higher plane of principle.Climbing device can supply river crab when water hypoxia, to climb out the water surface, climbs in the time of simultaneously also can supplying the river crab shell, to reduce the probability that soft crab is killed and devour after the shell.The pasture and water of passage both sides are netted no longer to be covered by pasture and water after sheet separates, and can increase water body up and down to flow, can be used as the passage of bait feeding simultaneously.Can the net sheet be raised to the higher plane of principle when improving and upwards mention and be fixed in the bamboo stake when culturing water level, height is concordant with the water surface, during water level depression, raises to the higher plane of principle to decline, make headline all the time with keep the water surface concordant.
Claims (3)
1. method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate is characterized in that: adopt following processing step:
(1), climbing device makes up: comprise the selection of net sheet, net chip architecture and the setting of net sheet; It is to choose mesh 0.5-1.5 centimetre polyvinyl chloride net sheet that said net sheet is selected; Said net chip architecture is the strip net sheet with net sheet cutting growth 5-50 rice, width 0.8-2.0 rice; The setting of said net sheet is that the net sheet is hung vertically in the breeding water body in pond, and every interval 2-5 rice is fixed with the bamboo stake;
(2), density is set: every interval 5-30 rice is left the passage of a wide 1-3 rice in the pasture and water clump of breeding water body, and the pasture and water in the pasture and water clump in the passage are cleaned out, and the passage both sides respectively are provided with a parallel climbing device;
(3), the hang of net sheet: the headline of net sheet is fixed on the bamboo stake position concordant with the water surface, moves up and down, and middle guiding principle and infraclass are fixed in the bamboo stake, and infraclass is fixed at the bottom of the pond in 20-50 centimetre the bamboo stake; Said headline is raised to the higher plane of principle concordant with the water surface in pond with the concordant net sheet of vertical laying that is meant of the water surface.
2. a kind of method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate according to claim 1, it is characterized in that: the said pond depth of water is 1.5-2.2 rice.
3. a kind of method of utilizing climbing device to improve the culture of Chinese mitten crab survival rate according to claim 1, it is characterized in that: the diameter of said bamboo stake is 2.5-8.0 centimetre, highly is 1.5-2.2 rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105520409A CN102077788B (en) | 2010-11-19 | 2010-11-19 | Method for improving culture survival rate of river crabs by using climbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105520409A CN102077788B (en) | 2010-11-19 | 2010-11-19 | Method for improving culture survival rate of river crabs by using climbing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102077788A CN102077788A (en) | 2011-06-01 |
| CN102077788B true CN102077788B (en) | 2012-05-23 |
Family
ID=44084140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105520409A Expired - Fee Related CN102077788B (en) | 2010-11-19 | 2010-11-19 | Method for improving culture survival rate of river crabs by using climbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102077788B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102487863B (en) * | 2011-12-02 | 2013-03-20 | 中国水产科学研究院东海水产研究所 | Shelter device and method for indoor cement pool temporarily cultivating green crab young crabs |
| CN104706317B (en) * | 2013-12-11 | 2017-11-07 | 广西红树林研究中心 | A kind of method and testing cassete for determining Babylonia vigor |
| CN105230547B (en) * | 2015-11-18 | 2018-05-11 | 莫永忠 | The cultural method of river crab |
| CN105248334B (en) * | 2015-11-18 | 2017-10-20 | 青岛农业大学 | The method of cultivating river crab in pond |
| CN107295991A (en) * | 2017-08-16 | 2017-10-27 | 宜宾县普安镇揽胜种养殖专业合作社 | Prevent the lobster cultivation protector that lobster escapes |
| CN108401971A (en) * | 2018-04-27 | 2018-08-17 | 常州市金坛区水产技术指导站 | Multifunctional protection river crab cultivation pond |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2509855Y (en) * | 2001-11-19 | 2002-09-11 | 侯国兴 | Special net table for cultivating crayfish |
| CN101057563B (en) * | 2007-05-31 | 2010-09-08 | 金坛市绿源特种水产科技有限公司 | Novel method for crab pond comprehensive ecological cultivation |
| CN101263794A (en) * | 2008-04-28 | 2008-09-17 | 南京大学 | Ecological cultivation technique for crab |
-
2010
- 2010-11-19 CN CN2010105520409A patent/CN102077788B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102077788A (en) | 2011-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103004666B (en) | Breeding method for intermediate breeding of Anguilla marmorata fries | |
| CN103392675B (en) | Stereoscopic comprehensive ecological culture method of multiple species in stichopus japonicus pond | |
| CN203999152U (en) | A kind of water body purification system by aquatic animals and plants stereoscopic configurations | |
| CN105379646A (en) | Method for planting rice in Procambarus clarkii culture pond | |
| CN102077788B (en) | Method for improving culture survival rate of river crabs by using climbing device | |
| CN104855318A (en) | Method for culturing crayfishes | |
| CN103404462B (en) | Method for cultivating fries of coilia ectenes in soil pond | |
| CN104604759A (en) | Grass carp culturing method | |
| CN104285868A (en) | Litopenaeus vannamei and fish mixed culturing ecological breeding method | |
| CN102823533A (en) | Low-salt overwintering and breeding method of portunus trituberculatus | |
| CN106818548A (en) | A kind of method that largemouth bass fingerling net cage tames and dociles food | |
| CN105557569A (en) | Pond culture method for Mastacembelus armatus | |
| CN103518658B (en) | Method of cultivating fry of Apostichopus japonicus by floating cages in ponds | |
| CN107864901A (en) | A kind of large-scale floating purse seine fish ecology mixed cultivation method | |
| CN103651256A (en) | Method for breeding bullfrogs | |
| CN106614110A (en) | River crab and lobster ecological breeding system | |
| CN105613357A (en) | Black sea bream fry culturing technology | |
| CN104145868B (en) | A kind of method improving pond loach fry survival rate | |
| CN103688882A (en) | High-density crab cultivating method | |
| CN104642089B (en) | A kind of polyculture method of fragrant plant mentioned in ancient texts and grouper | |
| CN202760008U (en) | Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs | |
| CN216088323U (en) | Greenhouse culture system of micropterus salmoides | |
| CN203040422U (en) | Enemy prevention and treatment device in coilia ectenes offspring seed pond cultivation | |
| CN107094678A (en) | A kind of scale breeding method for pond crayfish | |
| CN105010193B (en) | One kind hybridizes Fugu seed pond breeding method then |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20131119 |