CN105145415A - Macrobrachiumnipponensis larva seedling method - Google Patents

Abstract

The invention provides a macrobrachiumnipponensis larva seedling method, and relates to the macrobrachiumnipponensis cultivation technical field; when macrobrachiumnipponensis larva is hatched and ponding, the water depth is 60-80cm, soybean milk needs to be uniformly sprayed in the whole pond 2-3 times in each day after the macrobrachiumnipponensis larva is ponding, and 0.5-1kg soybean is needed per mu in each day; cooked yolk needs to be fed to the macrobrachiumnipponensis larva for 2-3 times each day and must be filtered by 100-120 mesh nylon bolting silk, and 2-3 eggs are needed per mu in each time; proper additional fertilizer needs to be applied according to color and transparency of the pond water in the seedling period, and a proper visible depth is 25cm; quicklime is thrown to the pond for 1-2 times per month, and the amount is 10-12kg per mu in each time, thus keeping pond water pH value to be at 7.5-8.5; photosynthetic bacteria (PSB) is applied in the seedling period; non-biotic artificial shrimp nests of proper quantity are arranged in the pond in a later seedling stage so as to allow the macrobrachiumnipponensis larva to inhabit and conceal; when the macrobrachiumnipponensis larva grows to 0.8-1cm, the macrobrachiumnipponensis larva can be cultivated in a lower density in different ponds, or sold. The method can promote the macrobrachiumnipponensis larva to fast grow and enhance physique, thus improving survival rate, and macrobrachiumnipponensis larva can have tidy out-ponding specifications.

Description

The seedling-cultivating method of a kind of freshwater shrimp young

Technical field

The present invention relates to shrimp culture technical field, particularly relate to the seedling-cultivating method of a kind of freshwater shrimp young.

Background technology

Freshwater shrimp (Macrobrachiumnipponensis), formal name used at school Japanese macrobrachium supernbum, belongs to Crustachia, Decapoda, Palaemonidae.Be strong adaptability in freshwater, distribution is wide, feeding habits are mixed, grow fast, fine and tender taste, the famous and precious aquatic products that delicious in taste, economic worth is very high, deeply look at by consumer parent.The major production areas of freshwater shrimp is in the Yangtze river basin, and all there is breeding scale on the ground such as Jiangsu, Anhui, Shanghai, Zhejiang, Fujian, Jiangxi, Guangdong, Hunan, Hubei, Sichuan, Hebei, Henan, Shandong.The cultivation gross yield of whole nation freshwater shrimp is all at about 220,000 t, and wherein Jiangsu Province's output is the highest, accounts for about 46% of national output, is secondly Anhui (accounting for 18%), Zhejiang (accounting for 9%), Hubei (accounting for 9%).

Cultivation, the raising technology of China freshwater shrimp just began one's study at the end of the nineties.But for many years, the fine-variety breeding of freshwater shrimp and the artificial breeding technique of seed scale are not yet broken through.Enter 21 century, due to the increase with market demand that improves constantly of people's level of consumption, the natural output of freshwater shrimp reduces in addition, and colony's specification reduces, and the output of freshwater shrimp can not meet the needs of domestic market, more can not meet the needs of overseas market.Therefore, the provinces and cities such as Hubei, Anhui, Zhejiang, Shanghai are studied the breeding of freshwater shrimp, cultivation, but because the freshwater shrimp life-span is short, fertility is strong, and pond culture specification is irregular, and size difference is larger, cultured output is always lower, culturist does not reach desirable benefit, and add that freshwater shrimp kind matter is degenerated serious in recent years, colony's specification is less than normal; Commodity rate is low, thus causes the area of shrimp culture and output to be difficult to expand and improve always.

Along with the continuous expansion of shrimp culture scale, the develop rapidly of production, also there are problems in shrimp culture industry, as uneven in shrimp culture technical merit, cultural technique is lack of standardization, and freshwater shrimp kind matter is degenerated, and sexual maturity ahead of time, disease increases, pattern is single etc., causes freshwater shrimp commodity rate low, and grade declines, the market competitiveness is not strong, has a strong impact on the sound development of shrimp culture.

Freshwater shrimp kind matter is degenerated, freshwater shrimp shrimp seedling is under-supply.

Freshwater shrimp is strong adaptability in freshwater, distribution is wide, feeding habits are mixed, it is fast to grow, fine and tender taste, the famous and precious aquatic products that delicious in taste, economic worth is very high, deeply looks at by consumer parent.Anhui Province's water surface aboundresources, be the important cultivation area of freshwater shrimp, output is only second to Jiangsu, and because freshwater shrimp market price remains high always, fisherman is always very high to the cultivation enthusiasm of freshwater shrimp.

But the deficiency of shrimp seedling, the especially deficiency of high-quality shrimp seedling, limit the expansion of shrimp culture scale, become the bottleneck of freshwater shrimp industry development; Because cultural technique is lack of standardization, cause freshwater shrimp kind matter to be degenerated, make shrimp culture family decline in benefits; Seed rearing survival rate is on the low side, makes raiser take in minimizing.

Select the freshwater shrimp kind that proterties is excellent, ensure the supply of high-quality freshwater shrimp seed, specification freshwater shrimp seed rearing and one-tenth shrimp aquaculture technology, become the problem that freshwater shrimp industry development need solve.

Summary of the invention

The object of the present invention is to provide the seedling-cultivating method of a kind of freshwater shrimp young, to solve the problem.

Technical problem to be solved by this invention realizes by the following technical solutions:

The seedling-cultivating method of a kind of freshwater shrimp young, it is characterized in that, the depth of water 60-80cm when freshwater shrimp young has just hatched rear lower pond, under the freshwater shrimp young behind pond every day full pond evenly splash soya bean slurry 2-3 time, every mu of every day uses soya bean 0.5-1kg, soya bean makes soya bean slurry after soaking with Chinese medicine juice, and Chinese medicine juice is by 12 parts, Radix Glycyrrhizae, the seed of Oriental arborvitae 6 parts, cassia seed 4 parts, dalbergia wood 5 parts, the Radix Astragali 7 parts, red date 6 parts, dried human placenta 2 parts, Radix Angelicae Sinensis 3 parts of water extractions and obtaining;

Add every day and feed 2-3 ripe yolk, ripe yolk palpus 100-120 order nylon silk cover filtering, consumption is every mu of each 2-3;

Must apply in time according to the color of Chi Shui and transparency between nursery stage and topdress in right amount, can see that degree of depth 25cm is advisable; Monthly execute 1-2 quicklime to Chi Shuizhong, its consumption is every mu of each 10-12kg, remains on 7.5-8.5 to maintain pond water pH value;

Nursery stage chien shih, with photosynthetic bacteria (PSB), to purify water, increases dissolved oxygen amount, promotes that freshwater shrimp larval growth is grown, builds up health, improve survival rate, and juvenile prawn to go out pond specification more neat;

In the nursery stage in later stage, appropriate inanimate artificial shrimp nest must be set in pond, perch for juvenile prawn hidden, when juvenile prawn body reaches 0.8-1cm, can divide the pool rare foster or sale.

The Chinese medicine juice that described ripe yolk soaks soya bean later boils, and the effective ingredient of Chinese medicine juice can enter in yolk, drops in the lump in water body with yolk, searches for food for freshwater shrimp seedling, and this Chinese medicine juice can improve freshwater shrimp seedling percent.

Soya bean after utilizing Chinese medicine juice to soak, the soya bean processed is starched, can eliminate contain in soya bean saponin(e, saponin, pancreas egg from the excitant of the noxious material such as enzyme inhibitor and haemoglutinin to freshwater shrimp seedling, avoid the competent cell destroying the freshwater shrimp young.

The invention has the beneficial effects as follows:

Method of the present invention can promote that the freshwater shrimp young grows fast, builds up health, and improves survival rate, and juvenile prawn to go out pond specification more neat.

Embodiment

The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, set forth the present invention further, but following embodiment being only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiment, all belong to protection scope of the present invention.

Embodiment 1

The seedling-cultivating method of a kind of freshwater shrimp young, the depth of water 60-80cm when freshwater shrimp young has just hatched rear lower pond, under the freshwater shrimp young behind pond every day full pond evenly splash soya bean slurry 2-3 time, every mu of every day uses soya bean 0.5-1kg, soya bean makes soya bean slurry after soaking with Chinese medicine juice, and Chinese medicine juice is by 12 parts, Radix Glycyrrhizae, the seed of Oriental arborvitae 6 parts, cassia seed 4 parts, dalbergia wood 5 parts, the Radix Astragali 7 parts, red date 6 parts, dried human placenta 2 parts, Radix Angelicae Sinensis 3 parts of water extractions and obtaining; Add every day and feed 2-3 ripe yolk, ripe yolk palpus 100-120 order nylon silk cover filtering, consumption is every mu of each 2-3; Must apply in time according to the color of Chi Shui and transparency between nursery stage and topdress in right amount, can see that degree of depth 25cm is advisable; Monthly execute 1-2 quicklime to Chi Shuizhong, its consumption is every mu of each 10-12kg, remains on 7.5-8.5 to maintain pond water pH value; Nursery stage chien shih, with photosynthetic bacteria (PSB), to purify water, increases dissolved oxygen amount, promotes that freshwater shrimp larval growth is grown, builds up health, improve survival rate, and juvenile prawn to go out pond specification more neat; In the nursery stage in later stage, appropriate inanimate artificial shrimp nest must be set in pond, perch for juvenile prawn hidden, when juvenile prawn body reaches 0.8-1cm, can divide the pool rare foster or sale.

Experimental data:

Associating Anhui Science and Technology College of Kong Jinhu agricultural development Co., Ltd, 2013-2015 carries out the breeding experiment of the freshwater shrimp young on farm, Kong Jin lake, Bengbu, Anhui Province.

Adopt the method for embodiment 1, cultivate the squab freshwater shrimp young, the freshwater shrimp young grows up to the time shorten of commodity freshwater shrimp about a week compared with conventional method, lethality have dropped 5.8%.

More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification is only preference of the present invention; be not used for limiting the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (2)

1. the seedling-cultivating method of a freshwater shrimp young, it is characterized in that, the depth of water 60-80cm when freshwater shrimp young has just hatched rear lower pond, under the freshwater shrimp young behind pond every day full pond evenly splash soya bean slurry 2-3 time, every mu of every day uses soya bean 0.5-1kg, soya bean makes soya bean slurry after soaking with Chinese medicine juice, and Chinese medicine juice is by 12 parts, Radix Glycyrrhizae, the seed of Oriental arborvitae 6 parts, cassia seed 4 parts, dalbergia wood 5 parts, the Radix Astragali 7 parts, red date 6 parts, dried human placenta 2 parts, Radix Angelicae Sinensis 3 parts of water extractions and obtaining;

Add every day and feed 2-3 ripe yolk, ripe yolk palpus 100-120 order nylon silk cover filtering, consumption is every mu of each 2-3;

Must apply in time according to the color of Chi Shui and transparency between nursery stage and topdress in right amount, can see that degree of depth 25cm is advisable; Monthly execute 1-2 quicklime to Chi Shuizhong, its consumption is every mu of each 10-12kg, remains on 7.5-8.5 to maintain pond water pH value;

Nursery stage chien shih, with photosynthetic bacteria, to purify water, increases dissolved oxygen amount, promotes that freshwater shrimp larval growth is grown, builds up health, improve survival rate, and juvenile prawn to go out pond specification more neat;

In the nursery stage in later stage, appropriate inanimate artificial shrimp nest must be set in pond, perch for juvenile prawn hidden, when juvenile prawn body reaches 0.8-1cm, can divide the pool rare foster or sale.

2. the seedling-cultivating method of the freshwater shrimp young according to claim 1, is characterized in that, the Chinese medicine juice that described ripe yolk soaks soya bean later boils.