CN104957065A - Ecological breeding method of breeding penaeus vannamei boone, crucian and chub in mixed mode - Google Patents
Ecological breeding method of breeding penaeus vannamei boone, crucian and chub in mixed mode Download PDFInfo
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses an ecological breeding method of breeding penaeus vannamei boone, crucian and chub in a mixed mode. The method includes the steps of preparing a pond, cleaning the pond, inputting water, disinfecting the pond water and richening the water sequentially before throwing in fingerlings and shrimp larvae, throwing in white gold crucian and chub, and then throwing in penaeus vannamei boone larvae. Compared with the prior art, the method has the advantages that the thrown-in white gold crucian does not rob food from the penaeus vannamei boone, the organic content at the bottom of the pond can be greatly decreased, and a substrate is effectively improved; the chub bred in the mixed mode has a good effect on adjusting the balance of algae in a water body, and the water quality can be effectively improved; the substrate and the water quality of the pond can be comprehensively improved by throwing in the fingerlings first, the harm caused by organic matter in bottom mud to the penaeus vannamei boone larvae are further reduced, and the stocking success rate of the penaeus vannamei boone larvae is ensured; the perfect combination of the penaeus vannamei boone, the crucian and the chub has great significance on penaeus vannamei boone breeding environment adjustment, disease prevention and income increase.
Description
Technical field
The present invention relates to aquaculture method field, be particularly applicable to the cultural method of the efficient ecological of Penaeus Vannmei.
Background technology
Since Penaeus Vannmei in 1988 introduces China, because of strong, the resistance to less salt of its premunition, grow the advantages such as fast, cultured area constantly expands, and output also constantly obtains breakthrough, achieves good economic benefit and social benefit.But the fulminant type epidemic disease of prawn still happens occasionally, and threatens shrimp culture industry, the success rate that prawn is formed in recent years declines gradually.Traditional prawn culturing mode is pond fish farming and high-elevation breeding pond, and the two is all the autotrophic type ecosystem that an organic loading is high, and in system, biological species is few, and food web is simple, and Self-regulation ability is weak, poor stability.Research shows, many ecotope associations compel the generation that the factor can bring out Disease, physics, chemistry and biological method can be adopted to improve and optimization of ecological environment, be built with the biocoenosis on multiple populations being beneficial to and keeping Ecological Stabilization, three-dimension use shrimp pond ecological position, reaches the object of effective disease preventing and treating.Therefore, improve shrimp pool water environment, the Eco-breeding pattern of the multiple types mixing such as application fishes and shrimps shellfish should be the direction of prawn culturing.
China raises together with fish and technically have accumulated ripe experience, about raising together with of Penaeus Vannmei and fish, be reportedly at present and Tilapia mossambica, grass carp, silver carp bighead, yellow cartfish, grey mullet etc., and majority is for raise together with certain fish single variety.As everyone knows, Penaeus Vannmei is bottom omnivorousness kind, and the fish raised together with mutually with it should avoid the competition with its formation ecological niche as far as possible, avoids robbing food and causing attack to prawn.Above-mentionedly efficiently solve this problem with raising together with of Tilapia mossambica etc., but prawn culturing is the cultivating system of a high load capacity, in breeding process, double burden can be caused to substrate and water quality, if can not control effectively to water, the end, cause the deterioration of cultivation water environment the most at last, cause disease to occur.As Chinese patent 200910041547.5 " ecological cultivation method that a kind of Tilapia mossambica and Environment of Litopenaeus vannamei Low are raised together with ", disclosed polyculture method due to Tilapia mossambica be ominivore-fish, and bait material can be robbed with prawn, easily cause the raising of bait system cost, cultural method and for example disclosed in Chinese patent 201310741051.5 " a kind of Penaeus Vannmei low salinity stocking method ", mainly with the raising together with of silver carp bighead, because the filter food effect of silver carp bighead effectively can improve water quality, the balance of algae and water can be regulated, but substrate effect is little to improving, and bighead to rob feeding habits strong, the bait of prawn can be consumed in a large number, culturing economic cost is not dominant.Therefore, set up one and effectively can improve prawn culturing water, base ring border, and reduce aquaculture cost to greatest extent, the Penaeus Vannmei polyculture method of additional income is imperative, also must have good practical significance.
Summary of the invention
For solving the problem, the object of the present invention is to provide the ecological cultivation method that a kind of Penaeus Vannmei and crucian, silver carp are raised together with, it effectively can improve Penaeus Vannmei pond culture environment, additional income.
The object of the present invention is achieved like this: the ecological cultivation method that a kind of Penaeus Vannmei and crucian, silver carp are raised together with, and it is characterized in that comprising the following steps:
(1) pond prepares: condition of water quality should meet water quality standard for fishery, pond mean depth of water is 1.5 ~ 2.0m, average every 2-4 mu pond is equipped with one, aerator, and fingerling, shrimp seedling are cleaned up the pond to pond before throwing in successively, intake, the process of sterilization pool water, rich water;
(2) fingerling throw in: after the rich water of step (1) until Chi Shui be light green or shallow dark brown time, first throw in platinum crucian 300 ~ 500 tail and silver carp 100 ~ 150 tail for every mu, under fingerling, before the pool, soak 5-15min sterilization with the saline solution of mass concentration 6-3%;
(3) shrimp seedling is thrown in: step (2) is thrown in fingerling and thrown in Penaeus Vannmei seedling afterwards on 7th ~ 10, puts 3 ~ 50,000 tails for every mu, requires that shrimp seedling body reaches more than 1cm;
(4) catch: after 3 ~ 4 months, first use thin net fishing, rear employing cage trapping Penaeus Vannmei, overlaps when the fish caught keeps next batch of cultivation white shrimp and supports till forming listing.
Commissioning pipe reason is carried out: adopt perfect compound feed and fermentation material to mix the method for throwing something and feeding after described step (3).
Water quality management is carried out: after putting shrimp seedling, every day intakes 2 ~ 3cm, until filled it up with by Chi Shui after described step (3); After Chi Shui fills it up with, if when water quality index occurs that severe exacerbation needs to change water, each quantity of exchanged water is no more than 30%; Water transparency remains on 30 ~ 40cm, and pH norm controlling is 7.5 ~ 8.5, and dissolved oxygen is more than 5mg/L, and pond bottom dissolved oxygen is more than 3.5mg/L, and non-ion state ammon is less than 0.1mg/L.
The method of cleaning up the pond in described step (1) is: annual spring shines the pool, periphery trench digging in pond is shone to cracking, and retain the active bed mud of 5 ~ 10cm, within 15th ~ 20, basification is carried out before the seed time is thrown in plan, 100 ~ 200kg quicklime or dolomite dust are dropped in every mu of dry pond, and turn over to soil.
Inlet method in described step (1) is: intake 10-20 day before the seed time is thrown in plan, water inlet pre-test source quality index: pH is 7.5 ~ 8.5, non-ionic ammonia concentration is less than 0.02mg/L, and sulfide concentration is less than 0.2mg/L, and dissolved oxygen concentration is greater than 5mg/L.
Sterilization pool water method in described step (1) is: intake latter second day every mu sterilize with chlorine dioxide 0.5 ~ 1.5kg, water transparence remains on more than 50cm.
Rich water method in described step (1) is: latter 1 ~ 2 day of sterilization, and every mu of pond uses Fertilizer water paste 2 ~ 4kg and composite bacillus 0.8-1.2kg, full pool spilling head, and opens aerator.
Described step (4) feeds intake in management, perfect compound feed and fermentation material is adopted to mix the method for throwing something and feeding: to put in shrimp seedling 10 ~ 15 days, use 15 ~ 25% fermentation material+75 ~ 85% complete diet pellets, after 10 ~ 15 days, use 5 ~ 15% fermentation material+85 ~ 95% complete diet pellets, throw something and feed every day 2 times, daily ration, feeding quantity is as the criterion to eat up in after bait throwing in 2.5 hours, every 15 days, stop material 1 day.
In described step (5), water transparency remains on 30 ~ 40cm, changes water lower than during 30cm, higher than using Fertilizer water paste rich water during 40cm; PH norm controlling 7.5 ~ 8.5, lower than 7.5 time, use quicklime 15 ~ 30g/m
3evenly splash in full pond; Higher than 8.5 time, change water on a small quantity and regulated.
Compared with prior art, the platinum crucian that the present invention throws in does not rob food with Penaeus Vannmei, in actual breeding process, the ecological niche of prawn is not constituted a threat to, simultaneously due to its omnivorousness characteristic, residual bait bottom ingesting and humus, can greatly reduce the content of organics of pond bottom, effectively improve substrate; And another kind silver carp raised together with is typical filter-feeding fish, there is special Filtering apparatus, based on leaching phytoplankton, usually perch at water body at the middle and upper levels, for regulating the balance of algae and water to have good effect, effectively can improve water quality; First throw in fry comprehensively to improve the substrate in pond, water quality, make full use of early stage phytoplankton, ensure its certain abundance, reduce bed mud organic matter further to the harm of Penaeus Vannmei seedling simultaneously, ensure that shrimp seedling puts success rate in a suitable place to breed; The perfect adaptation of three is for adjustment shrimp culture environment, and prevent disease, additional income is significant.
Embodiment
The ecological cultivation method that Penaeus Vannmei of the present invention and crucian, silver carp are raised together with, is the culture of Penaeus vannamei mode under a kind of Low-salinity (salinity≤1%), comprises the following steps:
(1) pond prepares: water source, pond should be sufficient, condition of water quality should meet water quality standard for fishery, pond area is advisable with 10 ~ 20 mu, mean depth of water must reach 1.5 ~ 2.0 meters, possess and independently enter discharge outlet and water channel, average every 2-4 mu pond is equipped with paddle aerator one, 3.0 kilowatts of such as conventional at present paddle aerators.Fingerling, shrimp seedling are cleaned up the pond to pond successively, are intake before throwing in, the process of sterilization pool water, rich water.
(1.1) clean up the pond: annual spring, weeds in pond, foreign material were removed in pond after draining Chi Shui, and carried out the solarizations pool, shone pond periphery trench digging to ftractureing, and retained the active bed mud of 5 ~ 10cm.Within 15th ~ 20, basification is carried out before the seed time is thrown in plan, 100 ~ 200kg quicklime or dolomite dust are dropped in every mu of dry pond, and soil is turned over, to make lime and soil fully mix to obtain optimal conditions and make soil fully contact oxygen, reinforced soil is breathed.The present invention not only carries out the solarization pool when cleaning up the pond, the active bed mud of reserve part, can stabilizing water quality, utilize the base fertilizer in pond self, accelerate the circulation of nitrogen phosphorus, soil is turned over simultaneously, lime and soil can be made fully to mix to obtain optimal conditions and make soil fully contact oxygen, organic matter can be made to be oxidized to the available nutrient source of water body as early as possible.
(1.2) intake: intake about 10-20 day before the seed time is thrown in plan, must measure source quality index before water inlet, pH should keep 7.5 ~ 8.5, and non-ionic ammonia concentration should be less than 0.02mg/L, sulfide concentration should be less than 0.2mg/L, and dissolved oxygen concentration should be greater than 5mg/L.During water inlet, the most handy 60 mesh sieve tulles of water inlet filter and prevent wild fishes and ovum from entering, and water-feeding deep should not be excessively dark, is advisable with 70 ~ 80cm.
(1.3) sterilization pool water: intake latter second day every mu sterilize with chlorine dioxide 0.5 ~ 1.5kg, water transparence remains on more than 50cm.
(1.4) rich water: latter 1 ~ 2 day of sterilization, every mu of pond uses Fertilizer water paste about 2 ~ 4kg and composite bacillus 0.8-1.2kg, full pool spilling head, and opens aerator.Fertilizer water paste is a kind of is primary raw material with chicken manure, utilize microbial fermentation technology to make Fertilizer water paste (such as adopt Fertilizer water paste) disclosed in Chinese patent 201310062244.8, effectively can prevent the pollution that transmission of pathogen in chicken manure causes, simultaneously good to the planktonic algae culture effect of breeding water body, the raised growth of phytoplankton impels unicellular animal, the zooplankton also amount reproduction growth of wheel animalcule and many shell-fish etc., reach significant rich water effect, and compound adds the debris in the recycling water body of composite bacillus, be degraded to and planktonicly utilized composition, reach the long-time rich water effect continued.
(2) fingerling throw in: after rich water until Chi Shui be light green or shallow dark brown time, first throw in platinum crucian 300 ~ 500 tail (specification can be 50 ~ 250 tails/kg) and silver carp 100 ~ 150 tail (specification can be 20 tails/kg) for every mu, under fingerling, before the pool, soak 5 ~ 15min sterilization with the saline solution of mass concentration 6-3%.The present invention is first throw in platinum crucian and silver carp when throwing in fishes and shrimps seedling, rear input shrimp seedling, first throw in fish comprehensively to improve the substrate in pond, water quality, make full use of early stage phytoplankton, ensure its certain abundance, reduce bed mud organic matter further to the harm of Penaeus Vannmei seedling simultaneously, ensure that shrimp seedling puts success rate in a suitable place to breed.Platinum crucian of the present invention is used to be adopt the method for unexpected mass incident and family selective breeding domestic excellent and Pengzhe fish and tip fin carps to be carried out the crucian new varieties of hybridizing, for Foshan platinum company exclusively cultivates, have that growth is fast, finished product fish neat specification, premunition are strong, superpower premunition and adaptive capacity to environment are shown to streptococcosis, harvesting rate is high, harvesting rate reaches the characteristic such as 85% ~ 90%, existing market price more expensive than common crucian 30%, and do not rob food with Penaeus Vannmei, greatly can promote the economic benefit of Fish-shrimp mix-culture.
(3) shrimp seedling is thrown in: throw in fingerling and throw in Penaeus Vannmei seedling afterwards on 7th ~ 10, put 3 ~ 50,000 tails for every mu, require that shrimp seedling body reaches more than 1cm, body surface is vivid, and stomach is full, and head internal organs color is very grave.
The management that feeds intake after the input of shrimp seedling: adopt high-quality perfect compound feed and fermentation material to mix the method for throwing something and feeding, namely put in seedling 10 ~ 15 days, use 15 ~ 25% fermentation material+75 ~ 85% complete diet pellets, after 10 ~ 15 days, use 5 ~ 15% fermentation material+85 ~ 95% complete diet pellets, every day, 7:30 and 17:30 respectively threw something and fed 1 time, bait is thrown at the shoal place of pond surrounding, daily ration, feeding quantity was eaten up with after bait throwing in 2 hours and is as the criterion, and every 15 days, stopped material 1 day.The present invention throws something and feeds and have employed high-quality perfect compound feed in feed and fermentation material mixes the method for throwing something and feeding, wherein fermentation material is the white shrimp fermentation material that Foshan pearl aquatic organism company produces, be mainly a kind of feedstuff of fermentable, can promote to digest and assimilate, reduce feed cost, prevention hepatomegaly and the trophism disease of prawn such as just in vain.
Shrimp seedling throw in after water quality management: after putting seedling, every day intakes 2 ~ 3cm, until filled it up with by Chi Shui.After Chi Shui fills it up with, if severe exacerbation appears in water quality index, suitably can change water, but each quantity of exchanged water is no more than 30%.Water transparency should remain on 30 ~ 40cm, changes water lower than during 30cm, higher than using Fertilizer water paste rich water during 40cm; PH norm controlling 7.5 ~ 8.5, lower than 7.5 time, use quicklime 15 ~ 30g/m
3evenly splash in full pond; Higher than 8.5 time, change water on a small quantity and regulated; Dissolved oxygen is more than 5mg/L, and non-ion state ammon is less than 0.1mg/L.
(4) catch: after 3 ~ 4 months, first use thin net fishing, rear employing cage trapping Penaeus Vannmei, overlaps when the fish caught keeps next batch of cultivation white shrimp and supports till forming listing.
All commercially, platinum crucian is the crucian new varieties that the production of seedling Co., Ltd is produced in water-white Jinsui River, Foshan three for quicklime, Fertilizer water paste and composite bacillus, chlorine dioxide, perfect compound feed, prawn fermentation material etc.
Embodiment 1
Guangdong Jiangmen great Ao town one raiser's leg Shrimp Litopenaeus vannamei Culture Raceway-type Ponds pool depth of water 1.5m, the water surface 10 mu, bottom material of pond for breeding is sandy soil, thoroughly cleans up the pond, and carry out the solarization pool, the process such as water inlet, sterilization pool water before putting seedling with quicklime.
Experimental group raiser is before throwing fingerling, shrimp seedling, with Fertilizer water paste (adopt Chinese patent 201310062244.8 disclosed in Fertilizer water paste) and composite bacillus be watered stir after to splash the water surface, every mu of meter Shui Ti uses 2kg and 1kg respectively, water colour is yellow green, throw in platinum crucian 300 tail (specification is 100 tails/kg) and silver carp 100 tail (specification is 20 tails/kg) for every mu subsequently, before throwing in, soak sterilization in 10 minutes with 5% saline solution, throw in fingerling and throw in Penaeus Vannmei seedling afterwards on 7th, put 50,000 tails (the long 3cm of body) for every mu, put in seedling 15 days, the fermentation material (fermentation material is the white shrimp fermentation material that Foshan pearl aquatic organism company produces) used of throwing something and feeding every day is 1:4 with the ratio of perfect compound feed, after 15 days, the throw something and feed fermentation material that uses and the ratio of perfect compound feed is 1:9 every day, daily ration, feeding quantity is eaten up with 2h after bait throwing in and is as the criterion, within every 7 ~ 10 days, to splash regulating water quality environment with compound EM bacterium, water transparency is made to remain between 30 ~ 50cm, or yellowish-brown, not any disease, substantially other drug useless, cultivate after 60 days, long about the 15cm of body, single about weight 25g, average 50/about the kg of finished product shrimp, average yield per mu 700kg.
Control group raiser selects the Tilapia mossambica on market for raising together with object, and the platinum crucian of alternative embodiment 1, silver carp and omnidistancely use perfect compound feed, other are with embodiment 1.Cultivate after 60 days, though Penaeus Vannmei output is also better, average 60/about the kg of its finished product shrimp, every per mu yield is about 600kg, and finished product shrimp specification is not exclusively neat, and has dead phenomenon steathily in breeding process, often needs to change water, uses antibiotics medicine.
Blank group is Penaeus Vannmei monoculture, and other are with embodiment 1.Average 75/about the kg of its finished product shrimp, every mu of water surface low yield is at about 300 ~ 500kg, and drug use is more; pond water quality is unstable, and water colour, transparency change rise and fall huge, often will change water; and Penaeus Vannmei is easy to get, white spot syndrome is with dead sick steathily, even has and arranges pool phenomenon on a small quantity.
Claims (9)
1. Penaeus Vannmei and crucian, a silver carp ecological cultivation method of raising together with, is characterized in that comprising the following steps:
(1) pond prepares: condition of water quality should meet water quality standard for fishery, pond mean depth of water is 1.5 ~ 2.0m, average every 2-4 mu pond is equipped with one, aerator, and fingerling, shrimp seedling are cleaned up the pond to pond before throwing in successively, intake, the process of sterilization pool water, rich water;
(2) fingerling throw in: after the rich water of step (1) until Chi Shui be light green or shallow dark brown time, first throw in platinum crucian 300 ~ 500 tail and silver carp 100 ~ 150 tail for every mu, under fingerling, before the pool, soak 5-15min sterilization with the saline solution of mass concentration 6-3%;
(3) shrimp seedling is thrown in: step (2) is thrown in fingerling and thrown in Penaeus Vannmei seedling afterwards on 7th ~ 10, puts 3 ~ 50,000 tails for every mu, requires that shrimp seedling body reaches more than 1cm;
(4) catch: after 3 ~ 4 months, first use thin net fishing, rear employing cage trapping Penaeus Vannmei, overlaps when the fish caught keeps next batch of cultivation white shrimp and supports till forming listing.
2. Penaeus Vannmei according to claim 1 and crucian, the silver carp ecological cultivation method of raising together with, is characterized in that: carry out commissioning pipe reason after described step (3): adopt perfect compound feed and fermentation material to mix the method for throwing something and feeding.
3. Penaeus Vannmei according to claim 1 and crucian, the silver carp ecological cultivation method of raising together with, is characterized in that: carry out water quality management after described step (3): after putting shrimp seedling, every day intakes 2 ~ 3cm, until filled it up with by Chi Shui; After Chi Shui fills it up with, if when water quality index occurs that severe exacerbation needs to change water, each quantity of exchanged water is no more than 30%; Water transparency remains on 30 ~ 40cm, and pH norm controlling is 7.5 ~ 8.5, and dissolved oxygen is more than 5mg/L, and pond bottom dissolved oxygen is more than 3.5mg/L, and non-ion state ammon is less than 0.1mg/L.
4. Penaeus Vannmei according to claim 1 and crucian, the silver carp ecological cultivation method of raising together with, it is characterized in that: the method for cleaning up the pond in described step (1) is: annual spring shines the pool, periphery trench digging in pond is shone to cracking, and retain the active bed mud of 5 ~ 10cm, within 15th ~ 20, basification is carried out before the seed time is thrown in plan, 100 ~ 200kg quicklime or dolomite dust are dropped in every mu of dry pond, and turn over to soil.
5. Penaeus Vannmei according to claim 1 and crucian, the silver carp ecological cultivation method of raising together with, it is characterized in that: the inlet method in described step (1) is: water inlet on the 10th ~ 20 before the seed time is thrown in plan, water inlet pre-test source quality index: pH is 7.5 ~ 8.5, non-ionic ammonia concentration is less than 0.02mg/L, sulfide concentration is less than 0.2mg/L, and dissolved oxygen concentration is greater than 5mg/L.
6. Penaeus Vannmei according to claim 1 and crucian, the silver carp ecological cultivation method of raising together with, it is characterized in that: the sterilization pool water method in described step (1) is: intake latter second day every mu sterilize with chlorine dioxide 0.5 ~ 1.5kg, water transparence remains on more than 50cm.
7. Penaeus Vannmei according to claim 1 and crucian, the silver carp ecological cultivation method of raising together with, it is characterized in that: the rich water method in described step (1) is: latter 1 ~ 2 day of sterilization, every mu of pond uses Fertilizer water paste 2 ~ 4kg and composite bacillus 0.8-1.2kg, full pool spilling head, and open aerator.
8. Penaeus Vannmei according to claim 2 and crucian, the silver carp ecological cultivation method of raising together with, it is characterized in that: described feeds intake in management, perfect compound feed and fermentation material is adopted to mix the method for throwing something and feeding: to put in shrimp seedling 10 ~ 15 days, use 15 ~ 25% fermentation material+75 ~ 85% complete diet pellets, after 10 ~ 15 days, use 5 ~ 15% fermentation material+85 ~ 95% complete diet pellets, throw something and feed every day 2 times, daily ration, feeding quantity is as the criterion to eat up in after bait throwing in 2.5 hours, every 15 days, stops material 1 day.
9. Penaeus Vannmei according to claim 3 and crucian, the silver carp ecological cultivation method of raising together with, is characterized in that: in described water quality management, water transparency remains on 30 ~ 40cm, changes water lower than during 30cm, higher than using Fertilizer water paste rich water during 40cm; PH norm controlling 7.5 ~ 8.5, lower than 7.5 time, use quicklime 15 ~ 30g/m
3evenly splash in full pond; Higher than 8.5 time, change water on a small quantity and regulated.
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| CN107771716A (en) * | 2017-11-27 | 2018-03-09 | 卢惠 | A kind of cultural method of prawn mixed breeding silver carp |
| CN107950437A (en) * | 2017-12-07 | 2018-04-24 | 中国水产科学研究院珠江水产研究所 | A kind of ecological cultivation method for circulating production supermarket grass carp |
| CN108739548A (en) * | 2018-06-25 | 2018-11-06 | 广东海洋大学 | A kind of method that cultivating pool moss is removed in litopenaeus vannamei feeding process |
| CN112602634A (en) * | 2020-12-18 | 2021-04-06 | 马鞍山市徽农农业科技发展有限公司 | Efficient polyculture method for freshwater fish |
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