CN103891644A - Preparation method for aquaculture carp breeding agents and breeding method - Google Patents

Abstract

The invention discloses a preparation method for aquaculture carp breeding agents. The method is characterized by including the following steps that parent fish selection and breeding are carried out, after overwintering, female German mirror carps and male Yellow River small high-back carps are separated for breeding, the female carps are over the age of three and weigh 1.5-5.0 kg, the male carps are at the age of 2-3 and weigh 1.0-2.5 kg, and the density is 150-200 fishes per mu; feed feeding the carps and rich in high protein comprises, by weight, 10-20 parts of wheat bran, 5-10 parts of rapeseed dregs, 0.5-1 part of soybean oil, 0.1-0.2 part of salt, 2-3 parts of fish meal, 0.5-1 part of calcium lactate and 8-9 parts of rice bran; in the breeding process, water quality needs to be noticed and adjusted, an oxygenation machine and water quality modifying agents are properly used, water is added and replaced reasonably at regular time, biocenosis of a water ecological system is regulated and controlled, and beneficial bacteria are supplemented to aquatic water.

Description

A kind of aquaculture carp is cultivated preparation method and the cultural method of agent

Technical field

The invention belongs to environmental protection technical field, relate to a kind of preparation method and cultural method of aquaculture carp cultivation agent.

Background technology

In view of constantly degenerating in this area in kind, premunition infects that disease is serious lowly, mutually, decreased growth, feed coefficient are high, thereby cause aquaculture cost to rise in a large number, release at this moment No. 1, triumphant profit, No. 2 good carp kinds, the economic benefit that has improved fish production is imperative.

Across-the-board regulation carp culture breed structure, improve existing carp culture kind in fish production, the further productive potential in the existing pond of performance, constantly increase output and the benefit of fish production, this kind carp is higher 0.5 yuan than the average per kilogram of other carp in market, this project implementation will form the new cultivation focus of fish production, and it will bring abundant interests and material benefit to raiser, and supply has very important meaning to aquatic products to meet the people.

Summary of the invention

The invention discloses a kind of aquaculture carp and cultivate the preparation method of agent (No. 1, triumphant profit, the agent of No. 2 carp nurture of fish fingerlings), it is characterized in that being undertaken by following step:

1, aquaculture carp is cultivated a preparation method for agent, it is characterized in that being undertaken by following step:

(1) selection of parent population and cultivation: after surviving the winter, little to female German frame mirror carp and male the Yellow River high back of the body carp is separated to raising, more than 3 ages of raun, body weight 1.5-5.0kg, male carp 2-3 age, body weight 1.0-2.5kg; Density 150 tail-200 tail/mus, the one-tenth of the feed weight portion that is rich in high protein of throwing something and feeding is grouped into: 8 ~ 9 parts, 10 ~ 20 parts of wheat skins, 5 ~ 10 parts of rapeseed dregs, 0.5 ~ 1 part of soybean oil, 0.1 ~ 0.2 part of salt, 2 ~ 3 parts of fish meal, 0.5 ~ 1 part of calcium lactate and rice bran; In feeding process, note water quality adjustment water quality, correctly use aerator, use improver of water quality, regularly rationally add and change water, regulate the biocoenosis of control water ecosystem and supplement beneficial bacterium in breeding water body;

(2) indoors artificial is hastened parturition: female, male ratio is 1:3-1:1, adopt LRH-A(Chinese luteinizing hormone-releasing hormone analog, 1.0～3.0mg and HGG(Chinese human chorionic gonadtropin 120～200IU?) mix mutually ocyodinic injection Mei ㎏ fish injection 5ml, parent population, injection raun, good prior detoxicating fish nest is arranged by the hand method of placing side by side at spawning pond, parent population after injection is put into spawning pond, allow its natural spawning, put and shine in the sun and the back of the washing by water method combining of sprinkling water can promote its ovulation;

(3) lay eggs latter 1 hour, ovum is taken out and takes tread flaking to process Lotic hatching, fat point to be generated is put into fishpond again and is cultivated.

(4) pond shifts to an earlier date desilting, sterilization is leveled, the first 1 week organic fertilizer in the pool under fry, and main component is: cow dung, the discarded matrix 300kg---400kg of edible mushroom, cultivate wheel animalcule, culture pond

1. pond condition

Culture pond should be built near nursery, traffic convenience, water source (fresh water or seawater) convenience, hidding and sunny side part.Preferably select any place of high-land, so that construction and draining.Soil pool area be advisable with 2000 square metres～3000 square metres, dark 80 centimetres～120 centimetres of pond, pond shape rectangle, soil property should be shale or argillo arenaceous, at the bottom of pond and pool wall non-leakage.General 3～5 or more of soil pond quantity, is convenient to same time-division pond, and water inlet is cultivated in batches, alternately results.

2. clear pond water inlet

New excavation pond can directly intake; If old pond should be discharged ponding, and to residue ponding drug administration, kill its Mesichthyes and crustacean.Available clear pond medicine has: (1) bleaching powder needs to detect chlorinty before using, and the bleaching powder consumption of chlorinty 30% is 25 grams/m～30 grams/m, and general drug effect disappears for 3 days～5 days.(2) 2 grams/cubic metre of " derris extract " consumptions.Seawater after can entering to filter after cleaning up the pond, 160 order～200 mesh sieve thin,tough silk for filter screen, prevent that harmful organisms from sneaking into.40 centimetres～60 centimetres of initial stage water inlets, regulating salinity is 10～20, and fertilising thereupon, makes water eutrophication.

3. rich water

Conventional fertile class is divided fertilizer and inorganic fertilizer, and amount of application is determined according to pond regimen condition, should be on a small quantity, duty executes.The general superphosphate of fertilizer amount is that 3 grams/cubic metre, urea are that to urinate consumption be 200 grams/cubic metre for 15 grams/cubic metre～20 grams/cubic metre, people.Chicken, duck excrement class are because its fertilizer efficiency is large and persistence is strong, and consumption is 200 grams/cubic metre, before use, should first ferment.Can dig a pitting at pool side, ight soil is fallen to people wherein, through fermentation after can in every day before midday after, sprinkle in pond.

After fertilising, under general light and temperature condition, after common 3 days～5 days, water colour is by clear thin out green or light brown.For rich water as early as possible, also can sprinkle pond through the compound algae liquid of cultivating from R&D institution or other purchases, consumption is 3 liters/m～5 liters/m.Along with water colour is deepened to add the water yield in good time.

Two, inoculating rotifer

When natural temperature reaches 10 ℃ of left and right, inoculating rotifer in good time when Chi Shui is more fertile, if Tu Chi cultivated wheel animalcule available iron chain and pull bed mud upper one year, stirs resting egg.Inoculating rotifer also can be bought free wheel worm near green house, but requires band ovum rate to want high.When inoculation, select fine day to carry out when afternoon, water temperature was the highest.Inoculum density: 10/liter of general free wheel worms or according to circumstances high density inoculation.

Three, cultivate management

1. fertilising

Cultivate early stage because the disposable amount of executing of base manure is larger, and water temperature is lower generally without supplementary fertilizer or a small amount of supplementary fertilizer, the later stage, nutrient salt in water consumption comparatively fast needed timely supplementary fertilizer along with water temperature rising algae reproduction is accelerated.Supplementary fertilizer is generally in carrying out afterwards before midday, and consumption is depending on water quality.Attention should be on a small quantity, duty is executed.

2. add and change water

Generally to add water as main, along with the breeding water colour of algae is deepened, add water early stage in good time.Latter temperature is higher, and the material recycle in pond is accelerated, and constantly output wheel animalcule, makes Trace Element Imbalance in water body, therefore needs to supplement fresh seawater.Supplementary seawater needs to filter, and preferably processes through drug disinfection.Quantity of exchanged water generally changes water 1/5～1/3 for every 10 days.Changing water can gather in the crops simultaneously.

3. bait throwing in

In the time that wheel animalcule density is excessive, for preventing in the short time pond water filtering, need results wheel animalcule in time, simultaneously for population is increased continuously, the bait of also can throwing something and feeding, is mainly yeast, soya-bean milk, wheat bran etc.Catch by wheel and control wheel animalcule density, supplement the measures such as bait, make unit cell algae maintain suitable density.

4. routine testing

Want running check pool wall whether to leak, notice whether water colour changes.If water colour is thin out, may algae kind density reduce, need application in time; Sometimes water colour change may be that advantage algae kind changes, and can not affect wheel animalcule growth.Density and the band ovum rate that also should check wheel animalcule, in the time that band ovum rate drops to 13% below, illustrate that wheel animalcule population will decay, and again intakes and inoculates after can pond is emptying.

5. the natural food such as disease control.

(5) 10000/liter of lower pool hour wheel borer population quantity not sufficients, should supplement the soya-bean milk 2---3kg/ mu of throwing something and feeding every mu of every day; Enter when pond is large until fish length after 10 days, natural food is not enough, then increase throw something and feed soya-bean milk and soya-bean cake paste 2---4kg/ mu; In the time that the body of growing seedlings reaches 3cm, the Articial bait making of suitably throwing something and feeding, selects dietary protein content to reach 29%-34%, and its one-tenth is grouped into: shrimp chaff 10-15 part, dregs of beans 25-30 part, wheat bran 25-40 part, corn 8-20 part, additive 0.5-2 part.

Carp of the present invention is cultivated the method for agent cultivation carp, it is characterized in that being undertaken by following step:

(1) select healthy aseptic seed: healthy anosis, body strong, type standard, AT seed 12000 tail/mus, under seed, pool potassium permanganate, chlorine dioxide or the Chinese medicine dish dregs of rice carry out disinfection to seed, with the potassium permanganate immersion 5-10 minute of 20ppm;

(2) clean up the pond: put before seedling quicklime or bleaching powder for pond, consumption 150-230 kg/acre sterilization;

(3) selected feed, rationally throw something and feed: the bait of preparation voluntarily, protein content used is 29%-34%, throws something and feeds every day four times, each feeding volume is as the criterion with the 85%-90% of fish total amount, makes fish remain vigorous appetite;

The described bait of preparation is voluntarily made up of the raw material of following portions by weight:

Select dietary protein content to reach 29%-34%, its one-tenth is grouped into: shrimp chaff 10-15 part, dregs of beans 25-30 part, wheat bran 25-40 part, corn 8-20 part, additive 0.5-2 part;

(4) use aerator and device for feeding fish bait:

The every 15000 tails/platform of aerator

The every 15000 tails/platform of device for feeding fish bait

Open aerator every day on time and according to weather condition, extend in good time or shorten the opening time.

(5) water quality management: fingerling is thrown in the initial stage, and Chi Shuiying is controlled at 1-1.5 rice, after entering the May, 1 new water of every two weeks filling, each water injection rate is so that pond increases 20-30 centimetre; July, early and middle ten days Chi Shui reached after peak level, within every 20-30 days, changed water once depending on pond water quality situation, and each quantity of exchanged water is the 1/3-1/2 of pond water inventory, during whole cultivation, relevant chemical measurements of water is carried out to conduct monitoring at all levels, and within guaranteeing its normal range (NR), specific targets are:

①PH＝8－9；

2. dissolved oxygen > 4mg/L;

3. molecules of ammonia < 0.04mg/L;

[0018](6) fish disease prevention and cure:

Within every 15-20 days, carry out a pond water sterilization, according to the sterilization idiocratic of margosa, pluck fresh branches and leaves by 667m2 water with 10---15kg leaf divides to be pricked number bundle and hangs, is inserted in around food, within 3-4 days, change once, to treating fishes and shrimps bacteriosis and infectious diseases, the good results are evident, to 8, September, feed with the margosa fresh bark spice of squeezing the juice, be used in conjunction 6 days, increase immunity.

In disease control, to adhere to all the time relying mainly on prevention, anti-overweighting controlled to obtain policy, helps raiser to carry out fish disease prevention and cure work.Within general every 15-20 days, carry out a pond water sterilization, desinsection and feeding spice, various diseases were eliminated before occurring.In the process of fish disease prevention and treatment, the high-efficiency low-toxicity medicines that use, generally use iodine class preparation more as far as possible, and the medicine that uses must be the qualified products that authenticate by GMP, to eat the local applications such as platform sterilization and hanging bag as main, avoid the large area medication of full pond.In aquaculture process, regulating and controlling water quality is crucial, especially after throwing in every year the May of seed, temperature raises gradually, add that feedstuff feeding amount increases gradually, harmful virus in water, bacterium starts amount reproduction, country is carrying out non-nuisance pattern energetically now, a lot of medicines are all prohibited from using, therefore, according to the sterilization idiocratic of margosa, plucking fresh branches and leaves divides and pricks number bundle extension by 667m2 water 10-15kg leaf, be inserted in around food field, within 3-4 days, change once, to treating fishes and shrimps bacteriosis and infectious diseases, the good results are evident, it can kill rapidly the capillaria in various bacteriums and the fish body of Chi Shuizhong, groove tapeworm etc., for prevention and treatment enteritis, hemorrhage, white head and mouth fish disease, cryptobiasis, burr Sao, trichodinasis texts is remarkable, and can effectively suppress the harmful virus breeding in water body, keep the desirable transparency of water body, the light amount of injecting is multiplied, to improving the oxygen content in water body, fish, shrimp food ration has very great help, thereby can reduce feed coefficient, improve digesting and assimilating of feed, therefore reduced to a great extent aquaculture cost.To 8, September, tapeworm disease, trichodinasis common in aquaculture start to spread unchecked, feed with the margosa fresh bark spice of squeezing the juice, being used in conjunction 6 days can kill more than 95% tapeworm in fish body and other worm larva, and margosa all can be used for medicine to people and domestic animal and use in right amount, nontoxic.Conventional disinfecting drug also has: strong gram 101 of middle fish, strong gram 202 of middle fish, support water god liquid, biological beneficial water treasured etc., using in medicine process, consumption can be determined according to medicine explanation and epidemic situation concrete condition.

Across-the-board regulation carp culture breed structure of the present invention, improve existing carp culture kind in fish production, the further productive potential in the existing pond of performance, constantly increase output and the benefit of fish production, this kind carp is higher 0.5 yuan than the average per kilogram of other carp in market, this project implementation will form the new cultivation focus of fish production, and it will bring abundant interests and material benefit to raiser, and supply has very important meaning to aquatic products to meet the people.

Embodiment

Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.Wherein raw material used, fry all have commercially available.

Embodiment 1

Aquaculture carp is cultivated a preparation method for agent, it is characterized in that being undertaken by following step:

(1) selection of parent population and cultivation: after surviving the winter, little to female German frame mirror carp and male the Yellow River high back of the body carp is separated to raising, more than 3 ages of raun, body weight 1.5-5.0kg, male carp 2-3 age, body weight 1.0-2.5kg; Density 150 tail-200 tail/mus, the one-tenth of the feed weight portion that is rich in high protein of throwing something and feeding is grouped into: 8 ~ 9 parts, 10 ~ 20 parts of wheat skins, 5 ~ 10 parts of rapeseed dregs, 0.5 ~ 1 part of soybean oil, 0.1 ~ 0.2 part of salt, 2 ~ 3 parts of fish meal, 0.5 ~ 1 part of calcium lactate and rice bran; In feeding process, note water quality adjustment water quality, correctly use aerator, use improver of water quality, regularly rationally add and change water, regulate the biocoenosis of control water ecosystem and supplement beneficial bacterium in breeding water body;

(2) indoors artificial is hastened parturition: female, male ratio is 1:3-1:1, adopt LRH-A, 1.0～3.0mg mixes ocyodinic injection Mei ㎏ fish injection 5ml, parent population, injection raun mutually with HGG, good prior detoxicating fish nest is arranged by the hand method of placing side by side at spawning pond, parent population after injection is put into spawning pond, allow its natural spawning, put and shine in the sun and the back of the washing by water method combining of sprinkling water can promote its ovulation;

(3) lay eggs latter 1 hour, ovum is taken out and takes tread flaking to process Lotic hatching, fat point to be generated is put into fishpond again and is cultivated.

(4) pond shifts to an earlier date desilting, sterilization is leveled, the first 1 week organic fertilizer in the pool under fry, and main component is: cow dung, the discarded matrix 300kg---400kg of edible mushroom, cultivate wheel animalcule, culture pond

1. pond condition

Culture pond should be built near nursery, traffic convenience, water source (fresh water or seawater) convenience, hidding and sunny side part.Preferably select any place of high-land, so that construction and draining.Soil pool area be advisable with 2000 square metres～3000 square metres, dark 80 centimetres～120 centimetres of pond, pond shape rectangle, soil property should be shale or argillo arenaceous, at the bottom of pond and pool wall non-leakage.General 3～5 or more of soil pond quantity, is convenient to same time-division pond, and water inlet is cultivated in batches, alternately results.

2. clear pond water inlet

New excavation pond can directly intake; If old pond should be discharged ponding, and to residue ponding drug administration, kill its Mesichthyes and crustacean.Available clear pond medicine has: (1) bleaching powder needs to detect chlorinty before using, and the bleaching powder consumption of chlorinty 30% is 25 grams/m～30 grams/m, and general drug effect disappears for 3 days～5 days; (2) 2 grams/cubic metre of " derris extract " consumptions.Seawater after can entering to filter after cleaning up the pond, 160 order～200 mesh sieve thin,tough silk for filter screen, prevent that harmful organisms from sneaking into.40 centimetres～60 centimetres of initial stage water inlets, regulating salinity is 10～20, and fertilising thereupon, makes water eutrophication.

3. rich water

Conventional fertile class is divided fertilizer and inorganic fertilizer, and amount of application is determined according to pond regimen condition, should be on a small quantity, duty executes.The general superphosphate of fertilizer amount is that 3 grams/cubic metre, urea are that to urinate consumption be 200 grams/cubic metre for 15 grams/cubic metre～20 grams/cubic metre, people.Chicken, duck excrement class are because its fertilizer efficiency is large and persistence is strong, and consumption is 200 grams/cubic metre, before use, should first ferment.Can dig a pitting at pool side, ight soil is fallen to people wherein, through fermentation after can in every day before midday after, sprinkle in pond.

After fertilising, under general light and temperature condition, after common 3 days～5 days, water colour is by clear thin out green or light brown.For rich water as early as possible, also can sprinkle pond through the compound algae liquid of cultivating from R&D institution or other purchases, consumption is 3 liters/m～5 liters/m.Along with water colour is deepened to add the water yield in good time.

Two, inoculating rotifer

When natural temperature reaches 10 ℃ of left and right, inoculating rotifer in good time when Chi Shui is more fertile, if Tu Chi cultivated wheel animalcule available iron chain and pull bed mud upper one year, stirs resting egg.Inoculating rotifer also can be bought free wheel worm near green house, but requires band ovum rate to want high.When inoculation, select fine day to carry out when afternoon, water temperature was the highest.Inoculum density: 10/liter of general free wheel worms or according to circumstances high density inoculation.

Three, cultivate management

1. fertilising

Cultivate early stage because the disposable amount of executing of base manure is larger, and water temperature is lower generally without supplementary fertilizer or a small amount of supplementary fertilizer, the later stage, nutrient salt in water consumption comparatively fast needed timely supplementary fertilizer along with water temperature rising algae reproduction is accelerated.Supplementary fertilizer is generally in carrying out afterwards before midday, and consumption is depending on water quality.Attention should be on a small quantity, duty is executed.

2. add and change water

Generally to add water as main, along with the breeding water colour of algae is deepened, add water early stage in good time.Latter temperature is higher, and the material recycle in pond is accelerated, and constantly output wheel animalcule, makes Trace Element Imbalance in water body, therefore needs to supplement fresh seawater.Supplementary seawater needs to filter, and preferably processes through drug disinfection.Quantity of exchanged water generally changes water 1/5～1/3 for every 10 days.Changing water can gather in the crops simultaneously.

3. bait throwing in

In the time that wheel animalcule density is excessive, for preventing in the short time pond water filtering, need results wheel animalcule in time, simultaneously for population is increased continuously, the bait of also can throwing something and feeding, is mainly yeast, soya-bean milk, wheat bran etc.Catch by wheel and control wheel animalcule density, supplement the measures such as bait, make unit cell algae maintain suitable density.

4. routine testing

Want running check pool wall whether to leak, notice whether water colour changes.If water colour is thin out, may algae kind density reduce, need application in time; Sometimes water colour change may be that advantage algae kind changes, and can not affect wheel animalcule growth.Density and the band ovum rate that also should check wheel animalcule, in the time that band ovum rate drops to 13% below, illustrate that wheel animalcule population will decay, and again intakes and inoculates after can pond is emptying.

5. the natural food such as disease control.

(5) 10000/liter of lower pool hour wheel borer population quantity not sufficients, should supplement the soya-bean milk 2---3kg/ mu of throwing something and feeding every mu of every day; Enter when pond is large until fish length after 10 days, natural food is not enough, then increase throw something and feed soya-bean milk and soya-bean cake paste 2---4kg/ mu; In the time that the body of growing seedlings reaches 3cm, the Articial bait making of suitably throwing something and feeding, selects dietary protein content to reach 29%-34%, and its one-tenth is grouped into: shrimp chaff 10-15 part, dregs of beans 25-30 part, wheat bran 25-40 part, corn 8-20 part, additive 0.5-2 part.

2, adopt carp claimed in claim 1 to cultivate the method for agent cultivation carp, it is characterized in that being undertaken by following step:

(1) select healthy aseptic seed: healthy anosis, body strong, type standard, AT seed 12000 tail/mus, under seed, pool potassium permanganate, chlorine dioxide or the Chinese medicine dish dregs of rice carry out disinfection to seed, with the potassium permanganate immersion 5-10 minute of 20ppm;

(2) clean up the pond: put before seedling quicklime or bleaching powder for pond, consumption 150-230 kg/acre sterilization;

(3) selected feed, rationally throw something and feed: the bait of preparation voluntarily, protein content used is 29%-34%, throws something and feeds every day four times, each feeding volume is as the criterion with the 85%-90% of fish total amount, makes fish remain vigorous appetite;

The described bait of preparation is voluntarily made up of the raw material of following portions by weight:

Select dietary protein content to reach 29%-34%, its one-tenth is grouped into: shrimp chaff 10-15 part, dregs of beans 25-30 part, wheat bran 25-40 part, corn 8-20 part, additive 0.5-2 part;

(4) use aerator and device for feeding fish bait:

The every 15000 tails/platform of aerator

The every 15000 tails/platform of device for feeding fish bait

Open aerator every day on time and according to weather condition, extend in good time or shorten the opening time.

(5) water quality management: fingerling is thrown in the initial stage, and Chi Shuiying is controlled at 1-1.5 rice, after entering the May, 1 new water of every two weeks filling, each water injection rate is so that pond increases 20-30 centimetre; July, early and middle ten days Chi Shui reached after peak level, within every 20-30 days, changed water once depending on pond water quality situation, and each quantity of exchanged water is the 1/3-1/2 of pond water inventory, during whole cultivation, relevant chemical measurements of water is carried out to conduct monitoring at all levels, and within guaranteeing its normal range (NR), specific targets are:

①PH＝8－9；

2. dissolved oxygen > 4mg/L;

3. molecules of ammonia < 0.04mg/L;

(6) fish disease prevention and cure:

Within every 15-20 days, carry out a pond water sterilization, according to the sterilization idiocratic of margosa, pluck fresh branches and leaves by 667m ²water is with 10---and 15kg leaf divides bundle number bundle to hang, be inserted in around food field, within 3-4 days, changes once, and to treating fishes and shrimps bacteriosis and infectious diseases, the good results are evident.

Claims (2)

1. aquaculture carp is cultivated a preparation method for agent, it is characterized in that being undertaken by following step:

(1) selection of parent population and cultivation: after surviving the winter, little to female German frame mirror carp and male the Yellow River high back of the body carp is separated to raising, more than 3 ages of raun, body weight 1.5-5.0kg, male carp 2-3 age, body weight 1.0-2.5kg; Density 150 tail-200 tail/mus, the one-tenth of the feed weight portion that is rich in high protein of throwing something and feeding is grouped into: 8 ~ 9 parts, 10 ~ 20 parts of wheat skins, 5 ~ 10 parts of rapeseed dregs, 0.5 ~ 1 part of soybean oil, 0.1 ~ 0.2 part of salt, 2 ~ 3 parts of fish meal, 0.5 ~ 1 part of calcium lactate and rice bran; In feeding process, note water quality adjustment water quality, correctly use aerator, use improver of water quality, regularly rationally add and change water, regulate the biocoenosis of control water ecosystem and supplement beneficial bacterium in breeding water body;

(2) indoors artificial is hastened parturition: female, male ratio is 1:3-1:1, adopt LRH-A, 1.0～3.0mg mixes ocyodinic injection Mei ㎏ fish injection 5ml, parent population, injection raun mutually with HGG, good prior detoxicating fish nest is arranged by the hand method of placing side by side at spawning pond, parent population after injection is put into spawning pond, allow its natural spawning, put and shine in the sun and the back of the washing by water method combining of sprinkling water can promote its ovulation;

(3) lay eggs latter 1 hour, ovum is taken out and takes tread flaking to process Lotic hatching, fat point to be generated is put into fishpond again and is cultivated,

(4) pond shifts to an earlier date desilting, sterilization is leveled, the first 1 week organic fertilizer in the pool under fry, and main component is: cow dung, the discarded matrix 300kg---400kg of edible mushroom, cultivate wheel animalcule, culture pond

1. pond condition

Culture pond should be built, hidding and sunny side part convenient near nursery, traffic convenience, water source (fresh water or seawater) in, preferably selects any place of high-land, so that construction and draining, soil pool area is advisable with 2000 square metres～3000 square metres, dark 80 centimetres～120 centimetres of pond, pond shape rectangle, soil property should be shale or argillo arenaceous, at the bottom of pond and pool wall non-leakage, general 3～5 or more of soil pond quantity, is convenient to same time-division pond, and water inlet is cultivated in batches, alternately results

2. clear pond water inlet

New excavation pond can directly intake; If old pond should be discharged ponding, and to residue ponding drug administration, kill its Mesichthyes and crustacean, available clear pond medicine has: (1) bleaching powder needs to detect chlorinty before using, the bleaching powder consumption of chlorinty 30% is 25 grams/m～30 grams/m, and general drug effect disappears for 3 days～5 days; (2) 2 grams/cubic metre of " derris extract " consumptions, the seawater after can entering to filter after cleaning up the pond, 160 order～200 mesh sieve thin,tough silk for filter screen, prevent that harmful organisms from sneaking into, 40 centimetres～60 centimetres of initial stage water inlets, regulating salinity is 10～20, and fertilising thereupon, make water eutrophication

3. rich water

Conventional fertile class is divided fertilizer and inorganic fertilizer, amount of application is determined according to pond regimen condition, should be on a small quantity, duty executes, and the general superphosphate of fertilizer amount is that 3 grams/cubic metre, urea are that to urinate consumption be 200 grams/cubic metre for 15 grams/cubic metre～20 grams/cubic metre, people, chicken, duck excrement class are because its fertilizer efficiency is large and persistence is strong, consumption is 200 grams/cubic metre, before use, should first ferment, and can dig a pitting at pool side, ight soil is fallen to people wherein, through fermentation after can in every day before midday after, sprinkle in pond

After fertilising, under general light and temperature condition, after common 3 days～5 days, water colour is by clear thin out green or light brown, for rich water as early as possible, also can sprinkle pond through the compound algae liquid of cultivating from R&D institution or other purchases, consumption is 3 liters/m～5 liters/m, along with water colour is deepened to add the water yield in good time

Two, inoculating rotifer

When natural temperature reaches 10 ℃ of left and right, inoculating rotifer in good time when Chi Shui is more fertile, if Tu Chi cultivated wheel animalcule available iron chain for upper 1 year and pulled bed mud, resting egg is stirred, inoculating rotifer also can be bought free wheel worm near green house, but requires band ovum rate to want high, selects fine day to carry out when afternoon, water temperature was the highest when inoculation, inoculum density: 10/liter of general free wheel worms or according to circumstances high density inoculation

Three, cultivate management

1. fertilising

Cultivate early stage because the disposable amount of executing of base manure is larger, and water temperature is lower generally without supplementary fertilizer or a small amount of supplementary fertilizer, later stage is along with water temperature rising algae reproduction is accelerated, nutrient salt in water consumption comparatively fast needs timely supplementary fertilizer, supplementary fertilizer is generally in carrying out afterwards before midday, consumption is depending on water quality, and attention should be on a small quantity, duty is executed

2. add and change water

Generally to add water as main, along with the breeding water colour of algae is deepened, add water early stage in good time, latter temperature is higher, material recycle in pond is accelerated, and constantly output wheel animalcule, makes Trace Element Imbalance in water body, therefore need to supplement fresh seawater, supplementary seawater needs to filter, and preferably processes through drug disinfection, and quantity of exchanged water generally changes water 1/5～1/3 for every 10 days, changing water can gather in the crops simultaneously

3. bait throwing in

In the time that wheel animalcule density is excessive, for preventing in the short time pond water filtering, need results wheel animalcule in time, simultaneously for population is increased continuously, also the bait of can throwing something and feeding, is mainly yeast, soya-bean milk, wheat bran etc., catches and controls wheel animalcule density, supplements the measures such as bait by wheel, make unit cell algae maintain suitable density

4. routine testing

Want running check pool wall whether to leak, notice whether water colour changes, if water colour is thin out, may algae kind density reduce, need application in time; Sometimes to change may be that advantage algae kind changes to water colour, can not affect wheel animalcule growth, also should check density and the band ovum rate of wheel animalcule, in the time that band ovum rate drops to 13% below, illustrate that wheel animalcule population will decay, again intake and inoculate after can pond is emptying,

5. the natural food such as disease control,

(5) 10000/liter of lower pool hour wheel borer population quantity not sufficients, should supplement the soya-bean milk 2---3kg/ mu of throwing something and feeding every mu of every day; Enter when pond is large until fish length after 10 days, natural food is not enough, then increase throw something and feed soya-bean milk and soya-bean cake paste 2---4kg/ mu; In the time that the body of growing seedlings reaches 3cm, the Articial bait making of suitably throwing something and feeding, selects dietary protein content to reach 29%-34%, and its one-tenth is grouped into: shrimp chaff 10-15 part, dregs of beans 25-30 part, wheat bran 25-40 part, corn 8-20 part, additive 0.5-2 part.

2. adopt carp claimed in claim 1 to cultivate the method for agent cultivation carp, it is characterized in that being undertaken by following step:

(1) select healthy aseptic seed: healthy anosis, body strong, type standard, AT seed 12000 tail/mus, under seed, pool potassium permanganate, chlorine dioxide or the Chinese medicine dish dregs of rice carry out disinfection to seed, with the potassium permanganate immersion 5-10 minute of 20ppm;

(2) clean up the pond: put before seedling quicklime or bleaching powder for pond, consumption 150-230 kg/acre sterilization;

(3) selected feed, rationally throw something and feed: the bait of preparation voluntarily, protein content used is 29%-34%, throws something and feeds every day four times, each feeding volume is as the criterion with the 85%-90% of fish total amount, makes fish remain vigorous appetite;

The described bait of preparation is voluntarily made up of the raw material of following portions by weight:

Select dietary protein content to reach 29%-34%, its one-tenth is grouped into: shrimp chaff 10-15 part, dregs of beans 25-30 part, wheat bran 25-40 part, corn 8-20 part, additive 0.5-2 part;

(4) use aerator and device for feeding fish bait:

The every 15000 tails/platform of aerator

The every 15000 tails/platform of device for feeding fish bait

Open aerator every day on time and according to weather condition, extend in good time or shorten the opening time,

(5) water quality management: fingerling is thrown in the initial stage, and Chi Shuiying is controlled at 1-1.5 rice, after entering the May, 1 new water of every two weeks filling, each water injection rate is so that pond increases 20-30 centimetre; July, early and middle ten days Chi Shui reached after peak level, within every 20-30 days, changed water once depending on pond water quality situation, and each quantity of exchanged water is the 1/3-1/2 of pond water inventory, during whole cultivation, relevant chemical measurements of water is carried out to conduct monitoring at all levels, and within guaranteeing its normal range (NR), specific targets are:

①PH＝8－9；

2. dissolved oxygen > 4mg/L;

3. molecules of ammonia < 0.04mg/L;

(6) fish disease prevention and cure:

Within every 15-20 days, carry out a pond water sterilization, according to the sterilization idiocratic of margosa, pluck fresh branches and leaves by 667m ²water is with 10---and 15kg leaf divides bundle number bundle to hang, be inserted in around food field, within 3-4 days, changes once, and to treating fishes and shrimps bacteriosis and infectious diseases, the good results are evident.