CN104221956A - Ecological culture method for preventing river crab pests and diseases from occurring - Google Patents
Ecological culture method for preventing river crab pests and diseases from occurring Download PDFInfo
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- CN104221956A CN104221956A CN201410373060.8A CN201410373060A CN104221956A CN 104221956 A CN104221956 A CN 104221956A CN 201410373060 A CN201410373060 A CN 201410373060A CN 104221956 A CN104221956 A CN 104221956A
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Abstract
The invention belongs to an ecological culture method for preventing river crab pests and diseases from occurring. The ecological culture method comprises the following steps that (1) a light energy sterilization and tea seed sterilization method is used for carrying out preprocessing on a culture pond; (2) river crabs are mainly raised in the culture pond, freshwater shrimps are raised in an intercropping way, and siniperca chuatsi is raised in an interpolation way; (3) water caltrop, potamogeton maackianus, ceratophyllum demersum, waterweed, pond lily, hydrilla verticillata, tape grass and water caltrop are planted in the culture pond; (4) fresh and living shellfish such as spiral shells, oysters and corbicula are fed in the culture pond; (5) biological preparations such as Dilishuang, blue algae killers, Dishengyang and Dilishuang are used in the culture pond. The ecological culture method has the advantages that the high-quality river crab culture ecological water area can be provided; the occurrence of pests and diseases in the river crab culture can be effectively controlled; high-quality and high-grade river crabs can be cultured, the economic benefits of crab farmers can be greatly improved, the sustainable development of the crab culture industry can be greatly improved, and the integral economic benefits and social benefits of the crab culture industry can be greatly improved.
Description
Technical field
The present invention relates to a kind of ecologically breeding river crabs method, particularly a kind of ecological cultivation method preventing river crab insect pest, disease generation.
Background technology
River crab, formal name used at school is Eriocheir sinensia.Culture of Chinese mitten crab is T&B, and because natural juvenile crab amount is fewer and feweri, natural juvenile crab can not meet the needs of culture of Chinese mitten crab far away.At present, what adopt in a large number during the cultivating river crab of various places is the juvenile crab of artificial propagation.Very easily there is insect pest, disease in the juvenile crab of artificial propagation.Need to come pest control, disease with a large amount of fishing medicine in cultivation.A large amount of use fishing medicine can bring crab farming water environment to worsen, support river crab also can because of poisoning quality decline.The one-tenth crab of such cultivation is difficult to the quality and safety standard reaching national non-harmful product.This is by the whole economic efficiency of the sustainable development and crab farming industry that greatly restrict crab farming industry and social benefit.
Summary of the invention
The object of the invention is to provide a kind of ecological cultivation method preventing river crab insect pest, disease generation for Problems existing in above-mentioned culture of Chinese mitten crab.This method can provide the culture of Chinese mitten crab ecological water area of high-quality.Effectively can control insect pest in culture of Chinese mitten crab, disease occurs.High-quality, high-grade high-quality river crab can be cultivated out.Greatly can improve the economic benefit of crab agriculture.Greatly can improve the sustainable development of crab farming industry and the whole economic efficiency of crab farming industry and social benefit.
Technical scheme of the present invention is: a kind of ecological cultivation method preventing river crab insect pest, disease generation.This ecological cultivation method contains following steps:
(1), culture pond pretreatment:
Luminous energy is cleaned up the pond sterilization: in culture pond after aquatic products results, on December 15th, 1 start drained by the water in culture pond and clean up the pond in the past, and culture pond bed mud is exposed to the sun sterilization under sunshine.Time of being exposed to the sun is for February 3 extremely then on December 18th, 1 the past.Sunshine is exposed to the sun to kill in the pool pathogene and effectively control pathogene and grows.Solar irradiation energy available protecting and cultivation microorganism simultaneously.Such as solar irradiation can cultivate a large amount of photosynthetic bacteria (PSB).In all microorganisms, about 95% is useful, and about 4% is opportunist, and only 1% is harmful microorganism.Beneficial microorganism physiological function can effectively control pathogene and grow.
The tea dregs of rice are sterilized: containing saponin 10%-15% in the tea dregs of rice, and belong to haemolytic exotoxin, this toxin has very strong killing action to the biology such as fish, amphibian, the reptile etc. that take haemoglobin as O_2 carrier.But killing action is not had to the biologies such as the crab being O_2 carrier with white azurin, shrimp and biological feed.Disinfecting time: the sterilization of the tea dregs of rice should be carried out to culture pond in 7 days before river crab juvenile crab is put in a suitable place to breed.Using dosage: in the culture pond of mean depth of water 0.15 meter every mu with dry tea dregs of rice 8-10 kilogram.Can kill with haemoglobin when in water, tea dregs of rice haemolytic exotoxin concentration reaches 10 mg/litre is the biology of O_2 carrier, but does not injure crab, shrimp and biological feed.Using method: be placed in 200 kg water with the tea dregs of rice 50 kilograms and salt 1 kilogram and soak 5-8 hour, splashes soaked above-mentioned tea dregs of rice slurry at full culture pond by specified volume, namely sees remarkable effect after 2 days.Chemical classes drug disinfection can not be re-used with after the sterilization of the tea dregs of rice, river crab can be made like this not endanger by fishing medicine.
(2), river crab is put in a suitable place to breed:
Main foster river crab: put the Eriocheir sinensia juvenile crab that juvenile crab kind is ChangJiang River in a suitable place to breed.Putting the juvenile crab time in a suitable place to breed is that February 5 was to February 30.Putting juvenile crab specification in a suitable place to breed is 130-160/kilogram.Putting juvenile crab quantity in a suitable place to breed is 800 every mu.Male, the female juvenile crab ratio of stocking is 3:2.
Freshwater shrimp supported by cover: putting the juvenile freshwater shrimp time in a suitable place to breed is that annual February 5 was to February 20.Putting juvenile freshwater shrimp specification in a suitable place to breed is individual long 1.5-1.8 cm.Putting juvenile freshwater shrimp quantity in a suitable place to breed is 5 kilograms every mu.
Insert and support Mandarin fish fish: inserting and supporting the mandarin fish fingerling time is late June.Inserting and supporting mandarin fish fingerling specification is individual long 5-6cm.Inserting and supporting mandarin fish fingerling quantity is every mu of 12 tails.
In culture pond, Eriocheir sinensia with water plants, confused flour beetle thing, small fish etc. for foodstuff.Freshwater shrimp take organic debris as foodstuff, supports the few residual bait chip of freshwater shrimp Neng Minus to water pollution.Mandarin fish fish is with wild fishes seedling, shrimp seedling etc. for foodstuff, and slotting foster Mandarin fish fish can effectively control wild fishes and river crab strives bait material.Above-mentioned stocking method can realize crab in same water body, shrimp, fish Collocation cultivation, reaches bio-diversity cultivation in water environment.Realize aquatic animal Mutualism, aquatic animal system material circulates benignly, and water area ecological environment balances.Breeding water body can be impelled to become ecological resources type water quality, aquatile insect pest can be controlled, disease occurs, can avoid using chemicals, commodity crab shrimp, mandarin fish quality can be improved.
(3), pasture and water cultivation:
In culture pond, water caltrop, Huang Sicao, hornwort, waterweed, water lily grass is transplanted in late September the previous year.In culture pond, hydrilla verticillata grass-seed, eel grass grass-seed, water caltrop is planted in early November the previous year.According to circumstances need March to mend then and plant above-mentioned 8 kinds of pasture and water, make 8 kinds of pasture and water form heavy water aquatic vegetation shiftingly.Bottom making spring, summer, season in autumn three culture pond, pasture and water coverage rate reaches 75%-85%.For the Chen Shui group making 8 kinds of pasture and water become bottom culture pond can realize by mower trimming method with by the precious method controlling its growth of control grass.Such cauline leaf face of water plants that can make controls 30-40 ㎝ part below the water surface.A large amount of oxygen can be released in water body when carrying out photosynthesis by heavy water water plants, can improve dissolved oxygen amount in water body like this, the metabolic function of heavy water water plants can be improved, can poisonous and harmful substance in large quantities in decomposition water, also can eliminate water body to have more than needed nutrition, algae is not easily bred, also can prevent river crab silk algae from adhering to sick generation.The pharmacological action of water plants can make river crab search for food in a large number after water plants not endophytic bacteria disease.
(4), to throw something and feed live-shellfish:
Mainly to throw something and feed in culture pond the live-shellfishs such as spiral shell, freshwater mussel, a species of small clam living in fresh water.Feeding time is mid-September for the first time.Injected volume is 150 kilograms every mu.Live-shellfish of throwing something and feeding can obtain stable aquatic ecosystem function and provide a large amount of animal protein bait to river crab, accelerates the growing and fattening of river crab.Second time Feeding time is mid-November.Feeding volume is 150 kilograms every mu.Mainly make it natural propagation children spiral shell, freshwater mussel and a species of small clam living in fresh water also can grow up in culture pond in May in next year, aquatic ecosystem function steady in a long-term can be obtained like this.In river crab growth and development stage, edible fresh and alive animal protein bait can improve river crab immunologic function, strengthens premunition.Live-shellfish has powerful drainage filter food function, and live-shellfish of throwing something and feeding when water plants metabolic function weakens in the fall greatly can improve Water quality.Its shell divides secret trace element can decompose water body to make water body be alkalescence, pH value is remained within the scope of 7.5-8.5.Such water body can prevent river crab to tremble the generation of disease.
(5), biologic product is used:
Biologic product is brought into use when summer temp reaches 30-35 DEG C.Service time: when high temperature reached 30-35 DEG C in continuous 2 days, when fine day the morning 9, bring into use biologic product.Using dosage: in culture pond, every 667 cubic metres of water bodys use refreshing 200 grams of end power.Using method: dry powder grain full pool spilling head of end power being felt well, every other day uses once, uses 3-5 time continuously.Use biologic product effect: power at the bottom of reasonable employment is felt well biologic product, in the anti-water-stop body of energy, ammonia nitrogen raises, in the anti-water-stop body of energy, dissolved oxygen amount reduces and water quality transparency decline, can prevent water PH value from reducing, can prevent and overcome microbial state treatment, recover and maintain the ecological balance, breeding water body can be impelled to be modified to as ecological resources water quality, effectively can prevent river crab insect pest, disease generation.
Should use blue-green algae once the raw oxygen in clean, the end and end power are felt well when there is blue-green algae in culture pond water body.Service time: use when fine day the morning 9.Using dosage: in 1.2 meters of dark culture ponds, first day uses blue-green algae once clean, and usage amount is that every 800 cubic metres of water bodys use blue-green algae once clean 600 grams.Within second day, use the raw oxygen in the end, usage amount is that every 800 cubic metres of water bodys use the raw oxygen 600 grams in the end.Within 3rd day, use end power to feel well, usage amount is that every 800 cubic metres of water bodys use refreshing 600 grams of end power.Using method: by the blue-green algae once raw oxygen in clean, the end and the refreshing powder full pool spilling head in official hour respectively of end power.The effect that once the raw oxygen in clean, the end and end power are felt well of use blue-green algae is: effectively can eliminate the blue-green algae in culture pond, the harmful substances such as the ammonia nitrogen in culture pond, nitrite can be made to be decomposed.Dissolved oxygen amount in culture pond can be made to be increased to more than 5.5mg/L, pH value in culture pond can be made to reach 7.5-8.5.Breeding water body can be impelled to improve as ecological resources water quality and the insect pest of effective control river crab, disease occur.
The invention has the beneficial effects as follows and provide a kind of ecological cultivation method preventing river crab insect pest, disease generation.This method can provide the culture of Chinese mitten crab ecological water area of high-quality.Effectively can control insect pest in culture of Chinese mitten crab, disease occurs.High-quality, high-grade high-quality river crab can be cultivated out.Greatly can improve the economic benefit of crab agriculture, greatly can improve the sustainable development of crab farming industry and the whole economic efficiency of crab farming industry and social benefit.
embodiment
A kind of ecological cultivation method preventing river crab insect pest, disease generation.This ecological cultivation method contains following steps:
(1), culture pond pretreatment: choosing is had abundant water resources, the culture pond cultivating river crab that surrounding water area ecological environment is good.
Luminous energy is cleaned up the pond sterilization: after the aquatic products results such as one-tenth crab, the water in the past on December 15th, 1 starting to drain in culture pond is also cleaned up the pond, and culture pond bed mud can be exposed to the sun sterilization under sunshine.Time of being exposed to the sun, for February 3 extremely then on December 18th, 1 the past, carries out luminous energy sterilization with the times of 45 days to culture pond.
The tea dregs of rice are sterilized: should fill with clear water and make mean depth of water reach 0.15 meter in culture pond.Disinfecting time: be carry out the sterilization of the tea dregs of rice in 7 days before river crab juvenile crab is put in a suitable place to breed.Using dosage: with the dry tea dregs of rice 10 kilograms in every mu of culture pond.Using method: be placed in 200 kg water with the tea dregs of rice 50 kilograms and salt 1 kilogram and soak tea dregs of rice slurry full pool spilling head after 5-8 hour.Tea dregs of rice disinfective action: tea dregs of rice slurry full pool spilling head.
(2), culture pond river crab is put in a suitable place to breed:
Main foster river crab: select the neat specification of putting ChangJiang River cultivation in a suitable place to breed, the Eriocheir sinensia juvenile crab of physique stalwartness.Putting the juvenile crab time in a suitable place to breed is February 12.Putting juvenile crab specification in a suitable place to breed is 145 every kilogram.Putting juvenile crab quantity in a suitable place to breed is 800 every mu.Male, the female juvenile crab ratio of stocking is 3:2.
Freshwater shrimp supported by cover: select cover to support neat specification, the juvenile freshwater shrimp of physique stalwartness.Putting the juvenile prawn time in a suitable place to breed is February 15.Putting juvenile prawn specification in a suitable place to breed is individual long 1.5-1.8cm.Putting juvenile prawn quantity in a suitable place to breed is 5,000 grams/acre.
Insert and support Mandarin fish fish: select to insert and support neat specification, the Mandarin fish fish fingerling of physique stalwartness.Inserting and supporting the mandarin fish fingerling time is June 25.Mandarin fish fingerling specification is individual length is 5-6cm.Inserting and supporting mandarin fish fingerling quantity is every mu of 12 tails.
(3), pasture and water cultivation: transplant water caltrop, Huang Sicao, hornwort, waterweed, water lily grass in late September the previous year in culture pond.In culture pond, hydrilla verticillata grass-seed eel grass grass-seed, water caltrop is planted in early November the previous year.According to circumstances need March to mend then and plant above-mentioned 8 kinds of pasture and water, make it form 8 kinds of heavy water aquatic vegetations.Bottom making spring, summer, season in autumn three culture pond, aquatic rate of vegetation reaches 75%-85%.For the Chen Shui group making 8 kinds of pasture and water become bottom culture pond can realize by mower trimming method with by the precious method controlling its growth of control grass.Such cauline leaf face of water plants that can make controls 30-40 ㎝ part below the water surface.
(4), to throw something and feed live-shellfish: the live-shellfishs such as spiral shell, freshwater mussel, a species of small clam living in fresh water of throwing something and feeding in culture pond when autumn, water plants metabolic function weakened.Release time first time is September 15.Injected volume is 150 kilograms every mu.The second time release time is November 15.Feeding volume is 150 kilograms every mu.
(5), use biologic product: service time be when continuous 2 days high temperature reaches 30-35 DEG C sunny day the morning 9 time bring into use power at the bottom of biologic product feel well.Using dosage is that in culture pond, every 667 cubic metres of water bodys use refreshing 200 grams of end power.Using method is dry powder grain full pool spilling head of end power being felt well, and uses once every one day, uses 4 times continuously.
Once the raw oxygen in clean, the end and end power are felt well to use blue-green algae when there is blue-green algae in culture pond water body.Service time is when being fine day the morning 9.Using method: in the culture pond depth of water 1.2 meters, first day uses blue-green algae once clean, and usage amount is that every 800 cubic metres of water bodys use blue-green algae once clean 600 grams.Within second day, use the raw oxygen in the end, usage amount is that every 800 cubic metres of water bodys use the raw oxygen 600 grams in the end.Within 3rd day, use end power to feel well, usage amount is that every 800 cubic metres of water bodys use refreshing 600 grams of end power.During use respectively by blue-green algae once the raw oxygen in clean, the end, end power feel well powder on time according to quantity full culture pond splash.
In 50 mu of culture ponds, Eriocheir sinensia is cultivated with said method.Its result is: cultivating river crab quality meets the standard of pollution-free food.Gather in the crops river crab 2982.675 kilograms December altogether then, on average every crab weighs 148.03 grams.Become the crab rate of recapture 56.30%, wherein high-quality river crab compliance rate is 91.50%.Wherein male crab accounts for 75%, male crab individual weight more than 175 grams.Wherein female crab accounts for 65%, female crab individual weight more than 125 grams.50 mu of raw economic benefits 164015 yuan of culture pond common property.Another results commercial sized prawn 581.39375 kilograms, commercial sized prawn produces economic benefit 35232.47 yuan.Results commodity mandarin fish 345.75 kilograms, mandarin fish produces economic benefit 6975 yuan.50 mu of culture pond net profits are 206222.47 yuan.Every mu of average net profit is 4124.45 yuan.
Claims (1)
1. prevent an ecological cultivation method for river crab insect pest, disease generation, it is characterized in that: this ecological cultivation method contains following steps:
(1), culture pond pretreatment:
Luminous energy is cleaned up the pond sterilization: in culture pond after aquatic products results, in the past on December 15th, 1 start the water in culture pond is drained and cleans up the pond, culture pond bed mud is exposed to the sun sterilization under sunshine, time of being exposed to the sun is for February 3 extremely then on December 18th, 1 the past, sunshine is exposed to the sun to kill in the pool pathogene and effectively control pathogene and grows, solar irradiation energy available protecting and cultivation microorganism simultaneously, solar irradiation can cultivate a large amount of photosynthetic bacteria, in all microorganisms, about 95% is useful, about 4% is opportunist, only 1% is harmful microorganism, beneficial microorganism physiological function can effectively control pathogene and grow,
The tea dregs of rice are sterilized: containing saponin 10%-15% in the tea dregs of rice, belong to haemolytic exotoxin, this toxin is to being that the biology of O_2 carrier is as fish with haemoglobin, amphibian, reptiles etc. have very strong killing action, but to the crab being O_2 carrier with white azurin, the biology such as shrimp and biological feed do not have killing action, disinfecting time: the sterilization of the tea dregs of rice should be carried out to culture pond in 7 days before river crab juvenile crab is put in a suitable place to breed, using dosage: in the culture pond of mean depth of water 0.15 meter every mu with dry tea dregs of rice 8-10 kilogram, can kill with haemoglobin when in water, tea dregs of rice haemolytic exotoxin concentration reaches 10 mg/litre is the biology of O_2 carrier, but do not injure crab, shrimp and biological feed, using method: be placed in 200 kg water with the tea dregs of rice 50 kilograms and salt 1 kilogram and soak 5-8 hour, soaked above-mentioned tea dregs of rice slurry is splashed at full culture pond by specified volume, namely remarkable effect is seen after 2 days, chemical classes drug disinfection can not be re-used with after the sterilization of the tea dregs of rice, like this river crab can be made not endanger by fishing medicine,
(2), river crab is put in a suitable place to breed:
Main support river crab: put the Eriocheir sinensia juvenile crab that juvenile crab kind is ChangJiang River in a suitable place to breed, put in a suitable place to breed the juvenile crab time be February 5 to February 30, put in a suitable place to breed juvenile crab specification be 130-160 only/kilogram, putting juvenile crab quantity in a suitable place to breed is 800 every mu, and male, the female juvenile crab ratio of stocking is 3:2;
Cover support freshwater shrimp: put in a suitable place to breed the juvenile freshwater shrimp time be annual February 5 to February 20, putting juvenile freshwater shrimp specification in a suitable place to breed is individual long 1.5-1.8 cm, and putting juvenile freshwater shrimp quantity in a suitable place to breed is 5 kilograms every mu;
Insert and support Mandarin fish fish: inserting and supporting the mandarin fish fingerling time is late June, inserting and supporting mandarin fish fingerling specification is individual long 5-6cm, and inserting and supporting mandarin fish fingerling quantity is every mu of 12 tails;
In culture pond, Eriocheir sinensia is with water plants, confused flour beetle thing, small fishs etc. are foodstuff, freshwater shrimp take organic debris as foodstuff, support the few residual bait chip of freshwater shrimp Neng Minus to water pollution, Mandarin fish fish is with wild fishes seedling, shrimp seedling etc. is foodstuff, slotting foster Mandarin fish fish can effectively control wild fishes and river crab strives bait material, above-mentioned stocking method can realize crab in same water body, shrimp, fish Collocation cultivation, reach bio-diversity cultivation in water environment, realize aquatic animal Mutualism, aquatic animal system material circulates benignly, water area ecological environment balances, breeding water body can be impelled to become ecological resources type water quality, aquatile insect pest can be controlled, disease occurs, can avoid using chemicals, commodity crab shrimp can be improved, mandarin fish quality,
(3), pasture and water cultivation:
In culture pond, water caltrop is transplanted in late September the previous year, Huang Sicao, hornwort, waterweed, water lily grass, in culture pond, hydrilla verticillata grass-seed eel grass grass-seed is planted in early November the previous year, water caltrop, according to circumstances need March to mend then and plant above-mentioned 8 kinds of pasture and water, make 8 kinds of pasture and water form heavy water aquatic vegetation shiftingly, make the spring, summer, bottom season in autumn three culture pond, pasture and water coverage rate reaches 75%-85%, for the Chen Shui group making 8 kinds of pasture and water become bottom culture pond can realize by mower trimming method with by the precious method controlling its growth of control grass, such cauline leaf face of water plants that can make controls 30-40 ㎝ part below the water surface, a large amount of oxygen can be released in water body when carrying out photosynthesis by heavy water water plants, can improve dissolved oxygen amount in water body like this, the new one-tenth metabolic function of heavy water water plants can be improved, can poisonous and harmful substance in large quantities in decomposition water, also water eutrophication can be eliminated, algae is not easily bred, also can prevent river crab silk algae from adhering to sick generation, the pharmacological action of water plants can make river crab search for food in a large number after water plants not endophytic bacteria disease,
(4), to throw something and feed live-shellfish:
Mainly to throw something and feed in culture pond spiral shell, freshwater mussel, the live-shellfishs such as a species of small clam living in fresh water, Feeding time is mid-September for the first time, injected volume is 150 kilograms every mu, live-shellfish of throwing something and feeding can obtain stable aquatic ecosystem function and provide a large amount of animal protein bait to river crab, accelerate the growing and fattening of river crab, second time Feeding time is mid-November, feeding volume is 150 kilograms every mu, mainly make its May in next year can in culture pond natural propagation children spiral shell, freshwater mussel and a species of small clam living in fresh water also grow up, such aquatic ecosystem function that can obtain long-term stability, in river crab growth and development stage, edible fresh and alive animal protein bait can improve river crab immunologic function, strengthen premunition, live-shellfish has powerful drainage filter food function, live-shellfish of throwing something and feeding when water plants metabolic function weakens in the fall greatly can improve Water quality, its shell divides secret trace element can decompose water body to make water body be alkalescence, pH value is made to remain within the scope of 7.5-8.5, such water body can prevent river crab to tremble the generation of disease,
(5), biologic product is used:
Biologic product is brought into use when summer temp reaches 30-35 DEG C, service time: when high temperature reached 30-35 DEG C in continuous 2 days, biologic product is brought into use when fine day the morning 9, using dosage: in culture pond, every 667 cubic metres of water bodys use refreshing 200 grams of end power, using method: dry powder grain full pool spilling head that end power is felt well, every other day use once, continuous use 3-5 time, use biologic product effect: power at the bottom of reasonable employment is felt well biologic product, in the anti-water-stop body of energy, ammonia nitrogen raises, in the anti-water-stop body of energy, dissolved oxygen amount reduces and water quality transparency decline, can prevent water PH value from reducing, can prevent and overcome microbial state treatment, recover and maintain the ecological balance, breeding water body can be impelled to be modified to as ecological resources water quality, can effectively prevent river crab insect pest, disease occurs,
Blue-green algae should be used once clean when there is blue-green algae in culture pond water body, the raw oxygen in the end and end power are felt well, service time: use when fine day the morning 9, using dosage: in 1.2 meters of dark culture ponds, first day uses blue-green algae once clean, usage amount is that every 800 cubic metres of water bodys use blue-green algae once clean 600 grams, within second day, use the raw oxygen in the end, usage amount is that every 800 cubic metres of water bodys use the raw oxygen 600 grams in the end, end power within 3rd day, is used to feel well, usage amount is that every 800 cubic metres of water bodys use refreshing 600 grams of end power, using method: blue-green algae is once clean, the powder full pool spilling head in official hour respectively that the raw oxygen in the end and end power are felt well, use blue-green algae once clean, the effect that the raw oxygen in the end and end power are felt well is: effectively can eliminate the blue-green algae in culture pond, the ammonia nitrogen in culture pond can be made, the harmful substances such as nitrite are decomposed, dissolved oxygen amount in culture pond can be made to be increased to more than 5.5mg/L, pH value in culture pond can be made to reach 7.5-8.5, breeding water body can be impelled to improve as ecological resources water quality and effectively control river crab insect pest, disease occurs.
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| CN104957063A (en) * | 2015-07-02 | 2015-10-07 | 王秀青 | Ecological prevention method for moss in river crab main aquaculture pond |
| CN105123589A (en) * | 2015-10-08 | 2015-12-09 | 潘洪强 | Ecological culture method capable of preventing picornvirus diseases |
| CN107836390A (en) * | 2017-12-06 | 2018-03-27 | 江苏诺亚方舟农业科技有限公司 | A kind of cultural method of big specification Eriocheir sinensis |
| CN108040942A (en) * | 2017-12-25 | 2018-05-18 | 重庆尔麟农业开发有限公司 | A kind of steamed crab cultural method |
| CN108328716A (en) * | 2018-02-11 | 2018-07-27 | 昆山历居山水食品有限公司 | A kind of improvement cultivation shrimp crab water body method |
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| CN108328716A (en) * | 2018-02-11 | 2018-07-27 | 昆山历居山水食品有限公司 | A kind of improvement cultivation shrimp crab water body method |
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