Multi-variety ecological polyculture method for colossma brachypomum

A multi-species and ecological technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of easy deterioration of water quality, low economic benefits, low feed utilization rate, etc.

Inactive Publication Date: 2020-10-27
李凯
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the cultivation of giant carp is basically a traditional single-species breeding method, which leads to low feed utilization rate, easy deterioration of water quality, and low economic benefits

Method used

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Embodiment Construction

[0029] Below in conjunction with specific embodiment, further illustrate the present invention.

[0030] A method for multi-species ecological polyculture of giant fat carp, comprising the following steps:

[0031] (1) Disinfect clear pond

[0032] The pond covers an area of ​​8 mu, runs east-west, and the bottom is clay. Drain the pond water 12 days before releasing the seedlings, freeze and dry for several days, level the bottom of the pond, remove excess silt on the surface (leave 10cm), and disinfect with quicklime 90kg / mu to kill pathogenic bacteria.

[0033] (2) Seed stocking

[0034] In mid-to-late May, when the water temperature is stable above 20°C, put in juvenile carp fry with a stocking specification of 10-12 fish / kg and a stocking density of 2,000 fish / mu; stocking specifications for silver carp and bighead carp are 6-10 fish / kg, the stocking density is 200 fish / mu, and the seedling ratio of silver carp and bighead carp is about 3:2; the stocking specification...

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Abstract

The invention relates to a multi-variety ecological polyculture method for colossma brachypomum. Colossma brachypomum is polycultured with grass carp, silver carp and bighead carp, and specific polyculture ratio and culture method are provided. The problems that the colossma brachypomum is prone to disease, high in mortality and unstable in benefit in a single-variety farming process are relatively well solved; through multi-variety ecological polyculture, culture water space can be effectively utilized; and the silver carp and the bighead carp can eat phytoplankton and zooplankton in water, and the grass carp can feed on mollusks and rotten aquatic plants, so that the concentration of nitrogen and phosphorus in the water is reduced, the self-purification capacity of the water is strengthened, and the method has significant ecological benefits. The survival rate of the colossma brachypomum is high, the grass carp, the silver carp and the bighead carp are harvested, and the method has higher economic benefits.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a multi-species ecological polyculture method for giant carp, grass carp, silver carp and bighead carp. Background technique [0002] The short-covered giant fat carp belongs to the order of the order of the carp, the family of the carp family, and the genus of the giant carp. Native to the Amazon River in South America, it has the characteristics of miscellaneous food, fast growth, large individual, easy to catch, thick meat, less thorns, delicious taste, and rich nutrition. It has become one of the important freshwater aquaculture species in my country. However, at present, the cultivation of giant carp is basically a traditional single-species breeding method, which leads to low feed utilization rate, easy deterioration of water quality, and low economic benefits. The multi-species ecological polyculture method of giant carp, grass carp, silver carp and bighead carp can not only im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 李凯
Owner 李凯
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