CN101032235A - The hatching culture techniques of crossing Cherax quadricarinatus - Google Patents

Abstract

The present invention is technology of cultivating hybrid fresh water crayfish in rice and lotus field. The technology includes selecting rice and lotus field, sterilizing, applying basal fertilizer, transplanting rice or lotus, raising young crayfish, filtering to avoid escape and field management. The present invention has simple method, high crayfish yield, low cost and other advantages.

Description

The hatching culture techniques of crossing Cherax quadricarinatus

Technical field:

The invention belongs to the cultural technique field, be specifically related to a kind of the hatching culture techniques of crossing Cherax quadricarinatus.

Background technology:

As everyone knows, it all is that growth is cultured among rivers,lakes and seas that existing lobster is cultured, and is difficult to improve its output and quality, satisfies the demand that people eat, and people wish to find a kind of " can utilize ", and the technology that dragon is is extensively cultured in the rice field.

Summary of the invention:

The objective of the invention is provides a kind of paddy field aquaculture the hatching culture techniques of crossing Cherax quadricarinatus that utilizes according to above-mentioned weak point, because hybridization lobster is to water quality and feed, site condition is less demanding, there is paddy field aquaculture in many in addition areas, make this utilize the rice field not only to plant rice but also support shrimp, to improve rice field unit are economic benefit, the rice field is raised the fresh water hybridization lobster and be can be paddy field weeding, remove insect pest, the Shaoshi chemical fertilizer, few pesticide, the rice field of supporting shrimp can increase output 5-10% for every mu, particularly those can only plant the low land reclaimed from a lake in a season, the winter soaked field, the general field of soaking, the pattern economic benefit of taking semilate rice and fresh water hybridization lobster to do is very considerable.

Rice field of the present invention lobster hatching cultural technique is to realize like this.

(1), select the rice field: should select water quality good, water yield abundance does not have pollution source on every side, and water retention capacity is stronger, and irrigation and drainage are convenient, the rice field that is not subjected to flood inundation on tracks.The rice field ridge must be widened heightening and consolidation, set up the cloudy canopy of sugarcane, advancing draining sets up and puts filtration, the anti-net of escaping, around inboard, excavate annular shrimp ditch, the furrow width 1-1.5 rice of supporting along field, rice field stalk, dark 0.8m, field piece area is bigger also will excavate " ten " font, " well " font or " day " font field ditch, field furrow width 0.5-1 rice between Tanaka, dark 0.5 meter, annular shrimp ditch and field ditch area account for about rice field area 5-10%.

(2), ditch cleaning sterilization: put shrimp preceding 10-15 days, and must clear up annular ditch and field ditch, remove surface dust, the furrow bank that correction is collapsed, every mu of rice field annular shrimp ditch quicklime 20-50 kilogram, or select other drug for use, wild fishes class, harmful animal thing and pathogenic bacteria are killed in thoroughly ditch cleaning sterilization.

(3), use sufficient base manure: before putting shrimp 7-10 days, inject 30-50 centimetre in water in the rice field, food organisms are cultivated in fertilising then, execute the fertile 500-800 kilogram of organic farming, once use sufficient for every mu.

(4), transplant aquatic organism: heavy water-based water plants such as the wheel blade of in annular shrimp ditch, planting, black algae, hornwort, pondweed, at limes marginis plantation water spinach, culture cucurbit at the water surface.Control the pasture and water area, general pasture and water account for the 40-50% of annular shrimp ditch area, sporadicly to be distributed as, help the unblocked plug of current in the shrimp ditch.

(5), filter and anti-escaping: advance, discharge outlet will be installed the bamboo paper tinsel, wire netting and net sheet etc. are anti-ly escaped, filtration facility, is strictly on guard against that harmful organisms enters or freshwater lobster is escaped with current.

(6), juvenile prawn puts in a suitable place to breed, will try the water when putting in a suitable place to breed, just can throw in juvenile prawn after the safety of trying the water, stocking method: the one, the close shrimp of fresh water hybridization lobster is directly put in a suitable place to breed in the rice field, allow it breed voluntarily, put the above freshwater lobster 15-20 kilogram of 40 grammes per square metres in a suitable place to breed for every mu, and adopt the no-tillage system rice cultivation; The 2nd, after paddy rice was transplanted seedlings, throwing in the juvenile prawn specification was 2-4 centimetre, threw in the 8000-10000 tail for every mu, will note the quality of juvenile prawn when putting in a suitable place to breed, by specification single step of releasing foot.

(7), field management: freshwater lobster is raised in the rice field, except that epipodium base fertilizer, the population feed of generally not throwing something and feeding, the cow dung that can throw some pasture and water drought grass and become thoroughly decomposed in ditch can be thrown something and fed some feed of animal origin as hammering the broken spiral shell freshwater mussel meat and the offcuts of slaughterhouse etc. into shape in growth during the busy season.Sooner or later adhere to patrolling the field every day, observe water colour variation and shrimp activity in the ditch, food, growing state.

Embodiment:

Paddy field aquaculture hybridization lobster of the present invention is also noted that following steps:

(1) dry field: the paddy dry field is suitable light roasting, can not fully water in field be drained, and water level is reduced to the field and shows out and get final product, and the time is unsuitable long, and whether the observation lobster has abnormal response, then water filling immediately when responding.

(2) rice field fertilising: it should serve as the main lasting long-acting purpose of fertility that reaches to execute the organic agricultural fertilizer that becomes thoroughly decomposed that rice field base manure will use sufficient, and executes per 10 kilograms/mu of biological compound fertilizer, forbids to use chemical fertilizer, as ammoniacal liquor and carbonic hydroammonium etc.Lobster is all very sensitive to agricultural chemicals, can suitably select the no insect pest agricultural chemicals of high-efficiency low-toxicity when the paddy rice pesticide grown needs for use, sprays rice leaf and does not spray in the water as far as possible.

(3) plant grass: transplant pasture and water at annular ditch, field ditch, raise ditch pasture and water coverage rate and be advisable with 40-50% as water plants such as water caltrop, hydrilla verticillata, house fish algae, pondweed, water calabash, rice field annular, and with fragmentary, be separated into.

(4) prevent escaping disease prevention: check whether the intake-outlet screen cloth is firm every day, prevent to leak and escape shrimp, lobster is supported in the rice field, its harmful animal is more, as the frog, water snake, loach, swamp eel, predacious fish, before putting in a suitable place to breed in water mouse and some birds thoroughly removing be also noted that harmful organisms in the removing field at ordinary times, having ready conditions can be provided with some on the limit, field and adopt bar or scarecrow and threaten and drive aquatic bird.

Claims (1)

1, a kind of the hatching culture techniques of crossing Cherax quadricarinatus, its feature is as follows:

(1), select the rice field: should select water quality good, water yield abundance does not have pollution source on every side, and water retention capacity is stronger, and irrigation and drainage are convenient, the rice field that is not subjected to flood inundation on tracks.The rice field ridge must be widened heightening and consolidation, set up the cloudy canopy of sugarcane, advancing draining sets up and puts filtration, the anti-net of escaping, around inboard, excavate annular shrimp ditch, the furrow width 1-1.5 rice of supporting along field, rice field stalk, dark 0.8m, field piece area is bigger also will excavate " ten " font, " well " font or " day " font field ditch, field furrow width 0.5-1 rice between Tanaka, dark 0.5 meter, annular shrimp ditch and field ditch area account for about rice field area 5-10%;

(2), ditch cleaning sterilization: put shrimp preceding 10-15 days, and must clear up annular ditch and field ditch, remove surface dust, the furrow bank that correction is collapsed, every mu of rice field annular shrimp ditch quicklime 20-50 kilogram, or select other drug for use, wild fishes class, harmful animal thing and pathogenic bacteria are killed in thoroughly ditch cleaning sterilization;

(3), use sufficient base manure: before putting shrimp 7-10 days, inject 30-50 centimetre in water in the rice field, food organisms are cultivated in fertilising then, execute the fertile 500-800 kilogram of organic farming, once use sufficient for every mu;

(4), transplant aquatic organism: heavy water-based water plants such as the wheel blade of in annular shrimp ditch, planting, black algae, hornwort, pondweed, at limes marginis plantation water spinach, culture cucurbit at the water surface.Control the pasture and water area, general pasture and water account for the 40-50% of annular shrimp ditch area, sporadicly to be distributed as, help the unblocked plug of current in the shrimp ditch;

(5), filter and anti-escaping: advance, discharge outlet will be installed the bamboo paper tinsel, wire netting and net sheet etc. are anti-ly escaped, filtration facility, is strictly on guard against that harmful organisms enters or freshwater lobster is escaped with current;

(6), juvenile prawn puts in a suitable place to breed, will try the water when putting in a suitable place to breed, just can throw in juvenile prawn after the safety of trying the water, stocking method: the one, the close shrimp of fresh water hybridization lobster is directly put in a suitable place to breed in the rice field, allow it breed voluntarily, put the above freshwater lobster 15-20 kilogram of 40 grammes per square metres in a suitable place to breed for every mu, and adopt the no-tillage system rice cultivation; The 2nd, after paddy rice was transplanted seedlings, throwing in the juvenile prawn specification was 2-4 centimetre, threw in the 8000-10000 tail for every mu, will note the quality of juvenile prawn when putting in a suitable place to breed, by specification single step of releasing foot;

(7), field management: freshwater lobster is raised in the rice field, except that epipodium base fertilizer, the population feed of generally not throwing something and feeding, the cow dung that can throw some pasture and water drought grass and become thoroughly decomposed in ditch can be thrown something and fed some feed of animal origin as hammering the broken spiral shell freshwater mussel meat and the offcuts of slaughterhouse etc. into shape in growth during the busy season.Sooner or later adhere to patrolling the field every day, observe water colour variation and shrimp activity in the ditch, food, growing state.