CN103583428A - Method for cultivating loach larvae by arranging net cages in pond - Google Patents
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- CN103583428A CN103583428A CN201310547137.4A CN201310547137A CN103583428A CN 103583428 A CN103583428 A CN 103583428A CN 201310547137 A CN201310547137 A CN 201310547137A CN 103583428 A CN103583428 A CN 103583428A
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Abstract
The invention discloses a method for cultivating loach larvae by arranging net cages in a pond to improve the rate of survival. The method mainly comprises the steps that firstly, the pond which is appropriate in area and water depth is selected, water is injected into the pond to clean and disinfect the pond, and palatable bait is prepared; secondly, the net cages with the total area being 10% of the area of the pond are arranged inside the pond, wherein each net cage conforms to the standard of (5-8)m*1m*0.7m, the net mesh is 60, the net cages are evenly arranged along the long edges of the pond in a multi-line and two-row mode, and the cage bottoms are close to the bottom of the pond but not make contact with the bottom mud when the net cages are fixed; thirdly, four submerged pumps are installed at the four corners of the pond, and pond circulating small-flow water is formed by adjusting the direction of a water outlet; fourthly, loach larvae are thrown into the net cages according to the demand of 2250-3000 loach larvae per square meter, the submerged pumps are started, and wheel animalcule and other palatable bait enter the net cages along water flow to be eaten by the loach larvae; fifthly, unobstructed exchanging of water inside and outside the net cages is guaranteed, and the bait is thrown into the net cages in due time to ensure adequate bait; sixthly, the loach larvae are moved out of the net cages when growing to be 2 centimeters long, the net is dragged out, aquatic insects in water are removed, then the loach larvae are moved to the pond to be bred, the bait is thrown into the pond in due time, and the loach larvae are bred to be larvae being 4 centimeters to 5 centimeters long.
Description
Technical field
The invention belongs to aquaculture field.Be specifically related to a kind of by raising in cage loach seed being set in pond effectively to improve the way of survival rate.
Background of invention
Raising along with people's living standard, delicious flavour is had again a loach of medical value and is more and more subject to consumer's favor, because natural loach resource far can not meet the needs in market, propagate loach fast development artificially, market is in great demand to large specification loach seed in batch.Loach seed rearing can be carried out at water bodys such as cement pit and ponds, and pond rearing fingerling has the advantages such as area is large, water environment stable, bait is easily cultivated, integrated cost is low, is the important channel of large-scale cultivation seed.But the current too low problem of ubiquity loach seed rearing survival rate in pond culture process; according to our investigation statistics; loach spray being cultivated to 4-5cm size seedling seed survival rate in pond is only 5-10%, the large-scale production of the too low serious restriction loach of seed rearing survival rate.The main cause one that causes low survival rate like this is that loach seedling exists a special external gill phase, after membrane, there is the gill filament exposing to stretch out the gill cavity to 15 these one-phases of age in days left and right, this in period fry feeding process, external gill easily damaged or be absorbed in pond at the bottom of mud cause fry death by suffocation in enormous quantities; The 2nd, to cultivate the pond of loach seedling and after fertilising, especially easily bring out growing in a large number of the aquatic insects such as dragonfly larva, loach seedling is caused survival rate to reduce by a large amount of predations of aquatic insect.The disclosed document of existing part and patent relate to pond rearing loach Technique of Raising Seeedling, and patent of invention (Granted publication CN101647420B) discloses the method for cultivating loach seedling open-mouthed bait with bio-bacterial manure; Publication (CN102835336A) discloses the method that loach seed breeds in batches, and its emphasis is improving loach spawning rate; Publication (CN200810021131.2) discloses a kind of loach seedling cultivation technology, mainly by pond splash soya-bean milk or paddy field aquaculture loach; Publication (CN102893936A) discloses the secondary loach offspring seed cultivation method of a kind of large squama, and the method is cement pit cultivating method; Publication (CN103109767A) discloses a kind of loach fish seedling artificial culturing method, mainly adopts 15 ages in days front at indoor culture, after 15 ages in days, transfers to outdoor cultivation; Publication (CN102405865A) discloses a kind of loach fry to the breeding method of summer flower fingerling, mainly adopts loach seedling 2cm specification front and back to adopt different oxygenation methods to improve weed survival rate; Publication (CN102763614A) discloses a kind of method of using cage culture loach, and its innovative point is to adopt metal decking at the bottom of net cage, and paving mud carries out the breeding of mature loach at the bottom of case, to solve into the problem that the loach rate of recapture is low; Above technology is all failed specific aim and is solved external gill rapid wear in pond rearing loach seed process, easily suffocates and aquatic insect preys on these two and causes the key issue that survival rate is low.
Summary of the invention
The object of the invention is to solve the above-mentioned low key issue of pond rearing loach survival rate that causes, designed a kind of raising in cage loach seedling that arranges effectively to improve the method for survival rate in pond.
The present invention is achieved in that
1, selecting specification is (50-100) * 30m
2, the pond of the dark 1.2m in pond, at the bottom of pond silt depth 20cm left and right;
2, the sterilization of cleaning up the pond: throw in loach spray first 10 days, injecting the new water of 60cm, every 667m
2with 200kg quicklime water full pool spilling head, sterilize;
3, open-mouthed bait is cultivated: 4-5 days before loach spray opening, discharges bio-bacterial manure with reference to patent of invention (Granted publication CN101647420B) and cultivates food organisms;
4, net cage is set up in net cage setting: loach spray is put front 1-2 days in a suitable place to breed in pond, 10% left and right that the net cage gross area is water surface area.6 types of net cage, upper cover can be opened closure, and specification is (5-8) m * 1m * 0.7m, and mesh size is 60 orders.By the long limit of net cage, evenly set up net cage with pond minor face parallel direction at the water surface, four jiaos, net cage is fixed with bamboo pole, and net cage is grown limit and inserted bamboo pole and fix, and bed mud at the bottom of straight not contact chamber at the bottom of guard box is better from bed mud 10-20cm effect at the bottom of case; The signal of net cage in pond distributes and sees Figure of description;
5, pond miniflow cycle water: four jiaos four immersible pumps (or waterwheel aerator) are installed in pond, are adjusted mouth of a river direction, guarantee while opening two, four or diagonal angle that Chi Shui presses to form miniflow water along (contrary) clockwise and circulate in pond; The signal of immersible pump (or waterwheel aerator) in pond distributes and sees Figure of description;
6, loach spray inlet: press 2250-3000 tail/m according to net cage area
2put into loach spray, the net cage upper cover that closes, opens immersible pump (or waterwheel aerator), forms pond microcirculation current, and the agreeable to the taste bait such as the wheel animalcule cultivating in pond waters enter casing with miniflow water and ingested by loach seedling;
7, daily management: clear up in time the foreign material that net cage casing side adheres to every day, guarantee that the inside and outside current exchange of net cage is unobstructed.The cartonning of loach seedling, about 7 days, takes the circumstances into consideration to append fertilizer according to the abundance situation of food organisms in the water of pond, guarantees that in pond, having enough agreeable to the taste bait to enter net cage with current ingests for loach seedling;
8, loach seedling entered pond: through the cultivation of about 15 days, loach seedling in net cage grows to 2cm left and right, now can knock-out excessively several, clear out net cage, with 60 mesh filter screens, filter the new water 20cm of filling, and draw in the net aquatic insect in pond to remove, then loach seedling is directly put into pond and proceed to next stage pond rearing.Now loach seedling external gill disappears, and the complete gill cavity forms, and mobility obviously increases, the planktons such as cladocera that can ingest in water body, by the pond rearing of 10-15 days, loach seedling grew up to the large size seedling seed of 4-5cm again, can proceed to next stage cultivation.The risk of preying on because of aquatic insect greatly reduces, and survival rate significantly improves.
Compared with prior art, good effect of the present invention is: the loach seedling of tool external gill is grown in net cage, has avoided being absorbed in and in Pond Silt, has damaged external gill or death by suffocation; The insects such as the aquatic insect in water body cannot enter in net cage, and net cage has lid, dragonfly cannot be in casing water body lay eggs and hatch insect larvae, effectively avoided the injury of aquatic insect to this vegetative stage loach seedling, greatly improved survival rate; And, aquatic insect bait for want of in pond waters, aquatic insect quantity greatly reduces, before entering pond, draw in the net to remove aquatic insect again, later stage, the lay eggs aquatic insect of growth became the bait of later stage loach seed on the contrary because individuality is little, greatly reduce the predation of aquatic insect to loach seedling, effectively improved the survival rate of cultivating seed in pond.Adopt the survival rate of present technique in net cage can reach 90%, full phase survival rate can reach 60%.
More detailed scheme is shown in described in < < embodiment > >.
Accompanying drawing explanation
Accompanying drawing is net cage and the distribution schematic diagram of immersible pump in pond in the present invention;
1, four jiaos, the pond immersible pump of installing; 2, the net cage arranging in pond;
Embodiment
2012-2013, we locate a plurality of plants and adopt present technique in Gongan County, Jingzhou City, Hubei Province, Jingzhou District etc., and general effect is good.Below embodiment one:
1, select East and West direction rectangle pond, area is 50 * 30m
2, the dark 1.2m in pond, at the bottom of pond silt depth 20cm left and right;
2, the sterilization of cleaning up the pond: throw in loach spray first 10 days, injecting the new water of 60cm, every 667m
2with the sterilization of cleaning up the pond of the fresh quicklime water of 300kg full pool spilling head;
3, loach spray opening is first 5 days, with reference to patent (Granted publication CN101647420B), discharges bio-bacterial manure 20kg in pond, discharges 5kg MAP simultaneously and cultivates food organisms;
4, net cage setting: loach spray is put in a suitable place to breed first 2 days, and net cage is set in pond, and cage size is 7.5m * 1m * 0.7m, and mesh size is 60 orders, 6 types of net cage, upper cover can be opened.20 net cages are set altogether, along pond length to 10 row 2 row are set, thing both sides respectively reserve the long water surface of 9-10m aerator are installed, interval 2m between every row net cage, interval 5m between net cage row, net cage is from the ridge, pond 5m, and four jiaos, net cage is fixed with bamboo pole, the long limit of net cage is evenly inserted 3 bamboo poles and is fixed, and keeps at the bottom of case from bed mud 10-20cm; Described net cage is self-control;
5, miniflow cycle water in pond forms: in pond, four jiaos four immersible pumps are installed, are guaranteed that Chi Shui presses counterclockwise to form miniflow water and circulate in pond during unlatching; Described immersible pump is that market is purchased, and power is 0.75KW/ platform;
6, loach spray inlet: each net cage is put into 22500 tail loach sprays, the net cage upper cover that closes is opened four immersible pumps, and the agreeable to the taste bait such as the wheel animalcule cultivating in pond waters enter casing with miniflow water and are ingested by loach seedling;
7, daily management: clear up in time the foreign material that net cage side adheres to every day, guarantee that the inside and outside current exchange of net cage is unobstructed.Loach seedling cartonning the 7th day, splashes 10kg bio-bacterial manure and 5kg MAP water to topdress in pond;
8, loach seedling enters pond: loach spray cartonning 15 days, and the loach seedling in net cage grows to 1.5-2.5cm, average specification 2cm left and right, knock-out is excessively several, average every case fish 20500 tails, survival rate surpasses 90%.Loach seedling is placed on to one jiao, pond by the temporary transient bundle of bundle case, removes net cage and bamboo pole, with 60 order net sheets, draw in the net to remove the medium-and-large-sized aquatic insect in pond, then directly pour fry into pond, proceed to the pond rearing stage.Splash 5kg fertilizer and 3kg MAP water to topdress respectively in the 16th day and the 23rd day;
Sampling check in the 28th day, loach seedling grows up to the large size seedling seed of 4-5cm, and full pond is deposited fish amount and is reached 27.06 ten thousand tails, and full phase survival rate is 60.1%.
Claims (1)
1. a method for raising in cage loach seed is set in pond, as described in following step:
1) pond is selected: selecting specification is (50-100) * 30m
2, the pond of the dark 1.2m in pond, at the bottom of pond mud degree of depth 20cm left and right;
2) sterilization of cleaning up the pond: throw in loach spray first 10 days, injecting the new water of 60cm, every 667m
2with 300kg quicklime water full pool spilling head, sterilize;
3) bait is cultivated: 4-5 days before loach spray opening, in pond, discharge bio-bacterial manure 20kg, and discharge 5kg MAP simultaneously and cultivate food organisms;
4) net cage setting: loach spray is put front 1-2 days in a suitable place to breed arranges net cage in pond, 10% left and right that the net cage gross area is water surface area.6 types of net cage, upper cover can be opened, and specification is (5-8) m * 1m * 0.7m, and mesh size is 60 orders.By the long limit of net cage and pond minor face parallel direction, at the water surface, set up net cage, net cage setting be take the immersible pump (or waterwheel aerator) established at pond quadrupod and is conducive to pond water under stirring to form miniflow cycle water be principle, generally along length limit, pond, set up 2 row effects better, four jiaos, net cage is fixed with bamboo pole, middle part, the long limit of net cage is inserted bamboo pole and is fixed, bed mud at the bottom of straight not contact chamber at the bottom of guard box, better from bed mud 10-20cm effect at the bottom of case;
5) miniflow cycle water in pond forms: in pond, four jiaos four compact submersible pumps are installed, are adjusted mouth of a river direction, guarantee that Chi Shui presses counterclockwise to form miniflow water and circulate in pond during unlatching;
6) loach spray inlet: press 2250-3000 tail/m according to net cage area
2put into loach spray, the net cage upper cover that closes, opens four or two immersible pumps in diagonal angle (or waterwheel aerator), forms pond microcirculation current, and the agreeable to the taste bait such as the wheel animalcule cultivating in pond waters enter casing with miniflow water and ingested by loach seedling;
7) daily management: clear up in time the foreign material that net cage casing side adheres to every day, guarantee that the inside and outside current exchange of net cage is unobstructed; The cartonning of loach seedling, about 7 days, takes the circumstances into consideration to append fertilizer according to the abundance situation of food organisms in the water of pond, guarantees that in pond, having enough agreeable to the taste bait to enter net cage with current ingests for loach fry;
8) loach seedling enters pond: through the cultivation of about 15 days, the loach seedling in net cage grew to about 2cm, now can knock-out excessively several, clears out net cage, and draws in the net aquatic insect in pond to remove, and then loach seedling is directly put into pond and proceeds to next stage pond rearing.Now loach seedling external gill disappears, and the complete gill cavity forms, and mobility obviously increases, the planktons such as cladocera that can ingest in water body, then by the pond rearing of 10-15 days, loach seedling grew up to the size seedling seed of 4-5cm, can proceed to next stage cultivation.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104054603A (en) * | 2014-06-09 | 2014-09-24 | 怀远县渔业科技发展有限责任公司 | Technical method for pollution-free cultivation of loaches through wooden boxes |
| CN104082194A (en) * | 2014-04-29 | 2014-10-08 | 管昌宝 | Two-step loach fry culturing method |
| CN104126527A (en) * | 2014-05-29 | 2014-11-05 | 潼南县岭骏养殖场 | Ecological breeding method for paddy field loaches |
| CN104126533A (en) * | 2014-08-04 | 2014-11-05 | 澧县卧龙港泥鳅养殖专业合作社 | High survival rate loach breeding method |
| CN104719217A (en) * | 2015-04-10 | 2015-06-24 | 宁国市金东坊农业开发有限公司 | Parent-tor-brevifilis net cage breeding method |
| CN105230534A (en) * | 2015-09-07 | 2016-01-13 | 江苏省淡水水产研究所 | Method for ecological breeding of misgurnus anguillicaudatus in rice field circular groove |
| CN105230545A (en) * | 2015-11-06 | 2016-01-13 | 广西壮族自治区水产科学研究院 | Breeding method for loach through net cages |
| CN106172169A (en) * | 2016-08-03 | 2016-12-07 | 中国水产科学研究院黄海水产研究所 | One fish culture pond interior circular oxygenation device and using method thereof |
| CN107372222A (en) * | 2017-08-23 | 2017-11-24 | 何亮 | A kind of cultural method of medicinal loach |
| CN111727912A (en) * | 2020-06-17 | 2020-10-02 | 浙江省海洋水产养殖研究所 | Striped mullet seawater pond circulating water seedling raising method |
| CN111838054A (en) * | 2020-07-15 | 2020-10-30 | 嵊泗县东海贻贝科技创新服务有限公司 | Cultivation pool with mud spreading device and use method |
| CN114594207A (en) * | 2022-02-24 | 2022-06-07 | 生态环境部南京环境科学研究所 | Method for testing toxicity of rice disease and pest control agent on shellfish aquatic organisms in field |
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| CN104082194A (en) * | 2014-04-29 | 2014-10-08 | 管昌宝 | Two-step loach fry culturing method |
| CN104082194B (en) * | 2014-04-29 | 2016-11-16 | 管昌宝 | A kind of seedlings cultivating method of two step flow process Misgurni anguillicaudatis |
| CN104126527A (en) * | 2014-05-29 | 2014-11-05 | 潼南县岭骏养殖场 | Ecological breeding method for paddy field loaches |
| CN104054603A (en) * | 2014-06-09 | 2014-09-24 | 怀远县渔业科技发展有限责任公司 | Technical method for pollution-free cultivation of loaches through wooden boxes |
| CN104126533A (en) * | 2014-08-04 | 2014-11-05 | 澧县卧龙港泥鳅养殖专业合作社 | High survival rate loach breeding method |
| CN104719217A (en) * | 2015-04-10 | 2015-06-24 | 宁国市金东坊农业开发有限公司 | Parent-tor-brevifilis net cage breeding method |
| CN105230534B (en) * | 2015-09-07 | 2018-05-15 | 江苏省淡水水产研究所 | A kind of method of rice field circular groove ecological breeding loach fry |
| CN105230534A (en) * | 2015-09-07 | 2016-01-13 | 江苏省淡水水产研究所 | Method for ecological breeding of misgurnus anguillicaudatus in rice field circular groove |
| CN105230545A (en) * | 2015-11-06 | 2016-01-13 | 广西壮族自治区水产科学研究院 | Breeding method for loach through net cages |
| CN106172169A (en) * | 2016-08-03 | 2016-12-07 | 中国水产科学研究院黄海水产研究所 | One fish culture pond interior circular oxygenation device and using method thereof |
| CN106172169B (en) * | 2016-08-03 | 2021-07-09 | 中国水产科学研究院黄海水产研究所 | Internal circulation oxygenation device for fish culture pond and use method thereof |
| CN107372222A (en) * | 2017-08-23 | 2017-11-24 | 何亮 | A kind of cultural method of medicinal loach |
| CN111727912A (en) * | 2020-06-17 | 2020-10-02 | 浙江省海洋水产养殖研究所 | Striped mullet seawater pond circulating water seedling raising method |
| CN111838054A (en) * | 2020-07-15 | 2020-10-30 | 嵊泗县东海贻贝科技创新服务有限公司 | Cultivation pool with mud spreading device and use method |
| CN111838054B (en) * | 2020-07-15 | 2022-03-18 | 嵊泗县东海贻贝科技创新服务有限公司 | Cultivation pool with mud spreading device and use method |
| CN114594207A (en) * | 2022-02-24 | 2022-06-07 | 生态环境部南京环境科学研究所 | Method for testing toxicity of rice disease and pest control agent on shellfish aquatic organisms in field |
| CN114594207B (en) * | 2022-02-24 | 2022-12-02 | 生态环境部南京环境科学研究所 | Method for testing toxicity of rice disease and pest control agent on crustacean aquatic organisms in field |
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