Nuisance free big sized river crab ecological cultivation method

An ecological farming and large-scale technology, applied in the field of crab farming, can solve the problems of restricting the development of crab farming industry, the economic benefits of crab farming industry, not paying attention to ecological technology, and the hazards of crab farming industry, so as to improve the standardized farming level and increase the comprehensive economy. Benefits, the effect of enriching animal and plant bait

Active Publication Date: 2005-01-26
潘洪强 +1
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Problems solved by technology

Due to the poor ecological environment of stocking crabs, such as the reduction of aquatic plants, the low reproduction of aquatic animals, the deterioration of PH value, and the dissolved oxygen cannot meet the normal development and growth needs of river crabs, resulting in the size of commercial crabs being too small, generally 75-100 grams per piece , the poor ecological environment for crab farming will also cause the disease to spread an

Method used

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Embodiment Construction

[0014] 1. Pretreatment of crab ponds: Select 50 mu of ponds with sufficient water sources as river crab breeding grounds. After the adult crabs are harvested in winter, the water in the crab pond is drained, and then the bottom of the pond is exposed to the sun for seven days to achieve the purpose of eliminating pathogens in the pond. At the same time, 15,000 kg of decomposed organic fertilizers were evenly applied to the pond.

[0015] 2. Crab seed cultivation: Determine the stocking density of seedlings according to the relationship between mass ratio and quantity ratio, and cultivate seedlings with neat specifications, strong physique, and an average size of 180 per kilogram. The number of stocking crabs is 30,000, the stocking ratio of male and female crabs is 3:2, and the stocking time is February 20. As a breeding large-scale high-quality river crab fry.

[0016] 3. Cultivation of aquatic plants: In autumn and winter, transplant the aquatic plants with seeds from the ...

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Abstract

The invention relates to nuisance free large-size river crab ecological breeding method. The method comprises: exposing breeding pool in sun after drainage, fertilizing the pool, planting aquatic grass, migrating seashell for mixed breeding, determining breeding density according to a certain quality and quantity proportion, choosing uniform size ,vigorous individual, regulating and controlling the water quality, insuring oxygen content and the slight alkalinity of water pH. The pool has optimal breeding density, crabs are not influenced by disease, and antibiotics is not needed.

Description

Technical field [0001] The invention relates to a method for raising crabs, in particular to a method for ecologically raising large-scale and high-quality river crabs without pollution. Background technique [0002] The scientific name of the river crab is the Chinese velvet crab. The culture of the river crab has a history of 100 years. Due to the shortage of natural crab seedlings, a large number of artificially propagated crab seedlings are currently used to breed in artificial breeding bases. With the large-scale artificial breeding, a series of breeding Problems such as: germplasm mixing. In particular, the characteristics and adaptability of crab species in the south and north are different. After being mixed, the growth and development will be poor. Due to the poor ecological environment of stocking crabs, such as the reduction of aquatic plants, the low reproduction of aquatic animals, the deterioration of PH value, and the dissolved oxygen cannot meet the normal d...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 潘洪强潘莉潘文新
Owner 潘洪强
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