CN102106275B - Method for breeding river crabs by using float grass channel and water wheel aerator - Google Patents
Method for breeding river crabs by using float grass channel and water wheel aerator Download PDFInfo
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- CN102106275B CN102106275B CN201010621887A CN201010621887A CN102106275B CN 102106275 B CN102106275 B CN 102106275B CN 201010621887 A CN201010621887 A CN 201010621887A CN 201010621887 A CN201010621887 A CN 201010621887A CN 102106275 B CN102106275 B CN 102106275B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a method for breeding river crabs by using a float grass channel and a water wheel aerator. The method comprises the following steps of: constructing a river crab breeding pond; constructing a pond annular trench and a water-grass-free water channel in the river crab breeding pond; mounting the water wheel aerator in a main channel, and running the water wheel aerator. The method can solve the problem of water body hypoxia of a grass type pond by the pond annular trench and the water grass-free water channel, ensures that water flow forms weak circulation in the pond by adopting a mode of combining the water channel and the water wheel aerator, so the fluidity of pond water and dissolved oxygen content at a pond bottom can be increased, the synchronization rate of river crab molting can be improved, the death rate caused by unsuccessful molting can be reduced, the breeding risk is reduced, and the breeding effect is improved. Therefore, the method is beneficial to improve the specification, yield and benefit of commercial crabs.
Description
Technical field
The present invention relates to the cultural method of a kind of river crab, particularly a kind of cultivating river crab pond water that promotes forms the method for the culture of Chinese mitten crab of circulation.
Background technology
The river crab formal name used at school is Eriocheir sinensia Eriocheir Sinensis, is one of main aquaculture kind of China.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 and the raising of cultural technique level, the density and the output of culture of Chinese mitten crab also are improved thereupon, therefore the dissolved oxygen amount of water body are also had higher requirement.
For improving cultured output and reducing the incidence of disease, the technological process that culture of Chinese mitten crab generally adopts at present 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 water body in unfavorable pond exchange and flowing 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, and the overgrowing of pasture and water has simultaneously reduced the activity space of river crab, is unfavorable for the river crab artificial feed of looking for food.In addition, too much pasture and water can cause that also the pond bottom pasture and water rot because of lacking illumination, very easily cause the crab disease.At present the pasture and water of undue growth are taked usually: 1. regularly cut off the top layer pasture and water; 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; 7. change water.Said method when pasture and water overgrow to preventing that river crab anoxic and morbidity from truly having certain effect; But; Because the pasture and water growth is very fast, the pasture and water of cutting off will soon be covered by pasture and water with the artificial passage of leaving, and remove the untimely slightly accident that dead crab also can be taken place of pasture and water.Usually use the micropore aerator to carry out oxygenation in the culture of Chinese mitten crab pond, and the influence that the traditional mechanical aerator is intercepted by pasture and water can only increase the dissolved oxygen amount of local water body, does not have actual use value.Cut off the top layer pasture and water and launch machinery or micropore oxygen increasing equipment and can only play and prevent that pasture and water from rotting and solve the water hypoxia problem, the river crab shell is not had facilitation.So; The structure in the pond of culture of Chinese mitten crab is an important convenience of culture of Chinese mitten crab; A kind of oxygenation problem that crab is supported in the pond that not only can solve is provided; And have the effect that stimulates the river crab shell, and help the pond that culture of Chinese mitten crab output and benefit improve, be that culture of Chinese mitten crab family and enterprise are desired always.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists; A kind of pond construction method that utilizes pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab is provided; This method both can solve the oxygenation problem in careless type pond; The miniflow that can utilize oxygenation to form again stimulates the river crab shell, and the output of culture of Chinese mitten crab and benefit are improved.
The objective of the invention is to realize that through following technical scheme a kind of method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab is characterized in that may further comprise the steps:
(1) structure of river crab cultivation pond: every mu of water surface is cleaned up the pond with 50 kilograms-150 kilogram of raw lime; One week back employing 50-70 mesh sieve thin,tough silk filters water filling, after the water filling degree of depth is 15-25 centimetre, at the bottom of the pond, transplants the waterweed pasture and water or transplants waterweed and hydrilla verticillata pasture and water; The spacing of every cave pasture and water is a 0.5-1.5 rice; The coverage rate of pasture and water is 60-80%, along with the growths of pasture and water progressively adds high water level, treats that water level begins to make up water stream channel when reaching 0.8-1.2 rice;
(2) structure of water stream channel: in river crab cultivation pond, make up pond circular groove and no pasture and water water stream channel, said structure pond circular groove is to excavate the ditch of not having kind of pasture and water all around along the pond, the wide 2-8 rice in ditch, dark 0.5-1.2 rice; It is the passage that in the pasture and water clump in pond, hews out no pasture and water that said structure does not have the pasture and water water stream channel; No pasture and water water stream channel is divided into main channel and subchannel; The wide 5-8 rice in main channel, the wide 2-4 rice in subchannel, the water depth at no pasture and water water stream channel place is identical with the pond water degree of depth; Said main channel one end links to each other with said subchannel one end, and the other end of main channel links to each other with circular groove respectively with the other end of said subchannel;
(3) waterwheel aerator setting: installation power is 1.0-2.0 kilowatt a waterwheel aerator in the main channel, and said waterwheel aerator is the product of being produced by the emerging dynamo-electric Co., Ltd of the friend of Zhangzhou City;
(4) operation of waterwheel aerator: utilize waterwheel aerator to stir water body, make Chi Shui in passage and circular groove, form faint circulation, and in the pasture and water clump, spread.
Described subchannel maximum spacing each other is a 8-40 rice.
The described passage that in the pasture and water clump in pond, hews out no pasture and water is that every first quarter moon is removed the pasture and water in main channel and the subchannel by manual work, to reduce the mobile resistance of water body.
Waterwheel aerator of every 5-8 mu river crab cultivation pond operated by rotary motion.
No pasture and water water stream channel can play and reduce the mobile resistance of water body, increases the flowability of Chi Shui, the exchange of promotion pond waters, with dissolved oxygen content and the stimulation river crab shell growth that improves water body.No pasture and water water stream channel is removed the pasture and water in the subchannel by the general every first quarter moon of manual work.
Drive the circulation that the mobile back of water body in anhydrous careless water stream channel and the circular groove forms by the waterwheel aerator rotation; The circulation size depends on power, pond shape and the pond area of aerator; Aerator power is bigger big more with the more little then circulation of pond area; Otherwise then more little, the circulation in garden shape or shape pond, ellipse garden is greater than square pond, and the circulation in square pond is greater than the rectangle pond.
The present invention compared with prior art has the following advantages:
1, the present invention utilizes the pond circular groove and does not have the pasture and water water stream channel and carry out oxygenation and can solve careless type pond waters anoxic problem.2, the mode that adopts water stream channel to combine with waterwheel aerator makes current in the pond, form faint circulation, can increase the flowability of Chi Shui and the dissolved oxygen content at the bottom of the pond, and the breed risk is reduced, and culture efficiency is improved.3, can improve the sync rates of river crab shell, reduce the unsuccessful lethality that causes of shell.4, help improving specification, output and the benefit of commodity crab.
Description of drawings
The mode that Fig. 1 adopts water stream channel to combine with waterwheel aerator for the present invention makes current in the pond, form the sketch map of circulation;
Among the figure: 1 circular groove rear end, 2 circular groove front ends, 3 circular groove lateral sulcus, 4 main channels, 5 subchannels, 6 waterwheel aerators, 7 pasture and water.
Embodiment
Embodiment one
A kind of method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab:
1, every mu of water surface is cleaned up the pond with double centner quicklime, 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 pond circular groove and no pasture and water water stream channel when reaching 1 meter.
2, the structure of water stream channel: the structure that comprises pond circular groove and no pasture and water water stream channel; Excavate around along the pond widely 2 meters, dark 0.8 meter circular groove is not planted pasture and water in the ditch; In the pasture and water clump, hew out no pasture and water water stream channel, passage is divided into main channel and subchannel, and the main channel is wide 5 meters, and the subchannel is wide 3 meters, the degree of depth and pond water with, be spaced apart 8 meters between the subchannel.
3, waterwheel aerator setting: installation power is 1.5 kilowatts a waterwheel aerator in the main channel, and uses lanyard, and the rotation direction of oxygen increasing machine impeller and the length bearing of trend of passage are consistent.
4, the operation of waterwheel aerator: utilize the water body stirring function of waterwheel aerator to make Chi Shui in water stream channel and pond circular groove, form circulation, and in the pasture and water clump, spread.The open and close of aerator are looked weather, water quality and river crab upgrowth situation and are decided, and are not less than 4mg/L with the dissolved oxygen of guaranteeing Chi Shui and are as the criterion.
Embodiment two
A kind of method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab:
1, every mu of water surface is cleaned up the pond with double centner quicklime, 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 and hydrilla verticillata then, and the spacing of every cave pasture and water is 1 meter, and the coverage rate of pasture and water is 80%.Along with the growths of pasture and water progressively adds high water level, treat that water level begins to make up pond circular groove and no pasture and water water stream channel when reaching 1 meter.
2, the structure of water stream channel: the structure that comprises pond circular groove and no pasture and water water stream channel; Excavate around along the pond widely 6 meters, dark 1.2 meters circular groove is not planted pasture and water in the ditch; In the pasture and water clump, hew out the water stream channel of no pasture and water, passage is divided into main channel and subchannel, the main channel wide 8 meters, the subchannel is wide 4 meters, the degree of depth and pond water with, be spaced apart 18 meters between the subchannel.
3, waterwheel aerator setting: installation power is 2 kilowatts a waterwheel aerator in the main channel, and uses lanyard, and the rotation direction of oxygen increasing machine impeller and the length bearing of trend of passage are consistent.
4, the operation of waterwheel aerator: utilize the water body stirring function of waterwheel aerator to make Chi Shui in water stream channel and pond circular groove, form circulation, and in the pasture and water clump, spread.The open and close of aerator are looked weather, water quality and river crab upgrowth situation and are decided, and are not less than 4mg/L with the dissolved oxygen of guaranteeing Chi Shui and are as the criterion.
Embodiment three
A kind of method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab:
1, every mu of water surface is cleaned up the pond with double centner quicklime, 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 pond circular groove and no pasture and water water stream channel when reaching 1 meter.
2, the structure of water stream channel: the structure that comprises pond circular groove and no pasture and water water stream channel; Excavate wide 8 meters around along the pond, dark 0.5 meter circular groove is not planted pasture and water in the ditch; In the pasture and water clump, hew out the water stream channel of no pasture and water, passage is divided into main channel and subchannel, and the main channel is wide 6 meters, and the subchannel is wide 3 meters, the degree of depth and pond water with, be spaced apart 29 meters between the subchannel.
3, waterwheel aerator setting: installation power is 1.5 kilowatts a waterwheel aerator in the main channel, and uses lanyard, and the rotation direction of oxygen increasing machine impeller and the length bearing of trend of passage are consistent.
4, the operation of waterwheel aerator: utilize the water body stirring function of waterwheel aerator to make Chi Shui in water stream channel and pond circular groove, form circulation, and in the pasture and water clump, spread.The open and close of aerator are looked weather, water quality and river crab upgrowth situation and are decided, and are not less than 4mg/L with the dissolved oxygen of guaranteeing Chi Shui and are as the criterion.
Embodiment four
A kind of method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab:
1, every mu of water surface is cleaned up the pond with double centner quicklime, 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 80%.Along with the growths of pasture and water progressively adds high water level, treat that water level begins to make up pond circular groove and no pasture and water water stream channel when reaching 1 meter.
2, the structure of water stream channel: the structure that comprises pond circular groove and no pasture and water water stream channel; Excavate around along the pond widely 5 meters, dark 1.0 meters circular groove is not planted pasture and water in the ditch; In the pasture and water clump, hew out the water stream channel of no pasture and water, passage is divided into main channel and subchannel, and the main channel is wide 5 meters, and the subchannel is wide 2 meters, the degree of depth and pond water with, be spaced apart 40 meters between the subchannel.
3, waterwheel aerator setting: installation power is 2 kilowatts a waterwheel aerator in the main channel, and uses lanyard, and the rotation direction of oxygen increasing machine impeller and the length bearing of trend of passage are consistent.
4, the operation of waterwheel aerator: utilize the water body stirring function of waterwheel aerator to make Chi Shui in passage and circular groove, form circulation, and in the pasture and water clump, spread.The open and close of aerator are looked weather, water quality and river crab upgrowth situation and are decided, and are not less than 4mg/L with the dissolved oxygen of guaranteeing Chi Shui and are as the criterion.
Embodiment five
A kind of method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab:
(1) make up river crab cultivation pond: every mu of water surface is cleaned up the pond with 50 kilograms-150 kilogram of raw lime; One week back employing 50-70 mesh sieve thin,tough silk filters water filling, after the water filling degree of depth is 15-25 centimetre, at the bottom of the pond, transplants the waterweed pasture and water or transplants waterweed and hydrilla verticillata pasture and water; The spacing of every cave pasture and water is a 0.5-1.5 rice; The coverage rate of pasture and water is 60-80%, along with the growths of pasture and water progressively adds high water level, treats that water level begins to make up water stream channel when reaching 0.8-1.2 rice.
(2) make up water stream channel: in river crab cultivation pond, make up pond circular groove and no pasture and water water stream channel, said structure pond circular groove is to excavate the ditch of not having kind of pasture and water all around along the pond, the wide 2-8 rice in ditch, dark 0.5-1.2 rice; It is the passage that in the pasture and water clump in pond, hews out no pasture and water that said structure does not have the pasture and water water stream channel, by the pasture and water in every main channel of first quarter moon removing of manual work and the subchannel, to reduce the resistance that water body flows.No pasture and water water stream channel is divided into main channel and subchannel, the wide 5-8 rice in main channel, and the wide 2-4 rice in subchannel, subchannel maximum spacing each other is a 8-40 rice, the water depth at no pasture and water water stream channel place is identical with the pond water degree of depth; Said main channel one end links to each other with said subchannel one end, and the other end of main channel links to each other with circular groove respectively with the other end of said subchannel.
(3) waterwheel aerator is set: installation power is 1.0-2.0 kilowatt a waterwheel aerator in the main channel, and said waterwheel aerator is the product of being produced by the emerging dynamo-electric Co., Ltd of the friend of Zhangzhou City; (4) utilize waterwheel aerator to stir water body, make Chi Shui in passage and circular groove, form faint circulation, and in the pasture and water clump, spread.The open and close of aerator are looked weather, water quality and river crab upgrowth situation and are decided, and are not less than 4mg/L with the dissolved oxygen of guaranteeing Chi Shui and are as the criterion.
Claims (3)
1. method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab is characterized in that may further comprise the steps:
(1) structure of river crab cultivation pond: every mu of water surface is cleaned up the pond with 50 kilograms-150 kilogram of raw lime; One week back employing 50-70 mesh sieve thin,tough silk filters water filling, after the water filling degree of depth is 15-25 centimetre, at the bottom of the pond, transplants the waterweed pasture and water or transplants waterweed and hydrilla verticillata pasture and water; The spacing of every cave pasture and water is a 0.5-1.5 rice; The coverage rate of pasture and water is 60-80%, along with the growths of pasture and water progressively adds high water level, treats that water level begins to make up water stream channel when reaching 0.8-1.2 rice;
(2) structure of water stream channel: in river crab cultivation pond, make up pond circular groove and no pasture and water water stream channel, said structure pond circular groove is to excavate the ditch of not having kind of pasture and water all around along the pond, the wide 2-8 rice in ditch, dark 0.5-1.2 rice; It is the passage that in the pasture and water clump in pond, hews out no pasture and water that said structure does not have the pasture and water water stream channel; No pasture and water water stream channel is divided into main channel and subchannel; The wide 5-8 rice in main channel, the wide 2-4 rice in subchannel, the water depth at no pasture and water water stream channel place is identical with the pond water degree of depth; Said main channel one end links to each other with said subchannel one end, and the other end of main channel links to each other with circular groove respectively with the other end of said subchannel;
(3) waterwheel aerator setting: installation power is 1.0-2.0 kilowatt a waterwheel aerator in the main channel;
(4) operation of waterwheel aerator: utilize waterwheel aerator to stir water body, make Chi Shui in passage and circular groove, form circulation, and in the pasture and water clump, spread.
2. a kind of method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab according to claim 1 is characterized in that described subchannel spacing each other is a 8-40 rice.
3. a kind of method of utilizing pasture and water passage and waterwheel aerator to carry out culture of Chinese mitten crab according to claim 1; It is characterized in that the said passage that in the pasture and water clump in pond, hews out no pasture and water is that every first quarter moon is removed the pasture and water in main channel and the subchannel by manual work, to reduce the mobile resistance of water body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010621887A CN102106275B (en) | 2010-12-28 | 2010-12-28 | Method for breeding river crabs by using float grass channel and water wheel aerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010621887A CN102106275B (en) | 2010-12-28 | 2010-12-28 | Method for breeding river crabs by using float grass channel and water wheel aerator |
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| CN102106275A CN102106275A (en) | 2011-06-29 |
| CN102106275B true CN102106275B (en) | 2012-10-03 |
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| CN201010621887A Expired - Fee Related CN102106275B (en) | 2010-12-28 | 2010-12-28 | Method for breeding river crabs by using float grass channel and water wheel aerator |
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Families Citing this family (1)
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| CN103931534B (en) * | 2014-05-05 | 2016-03-02 | 天津市天祥水产有限责任公司 | A kind of method that large squama Barb pond net box efficiently cultivates |
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Application publication date: 20110629 Assignee: Jiangsu Noahs Ark Agricultural Technology Co., Ltd. Assignor: Jiangsu Shuixian Co.,Ltd.|Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences Contract record no.: 2018320000021 Denomination of invention: Method for breeding river crabs by using float grass channel and water wheel aerator Granted publication date: 20121003 License type: Exclusive License Record date: 20180207 |
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