High-density breeding method used for green crab breeding pond

Abstract

The invention relates to the technical field of aquaculture, in particular to a high-density breeding method used for a green crab breeding pond. Green crabs are bred in the pond. The method is characterized in that a plurality of earth ridges are arranged in the pond and used for dividing a water area in the pond into continuous circulating water channels; water in the pond directionally and circularly flows in the circulating water channels; oxygenation devices used for filling the bottom of the water with oxygen are arranged in the water channels of the pond and used for providing power for water circulation; the earth ridges are provided with gentle earth ridge inclined surfaces; the slope of each earth ridge inclined surface is not greater than 1/3; aquatic weeds are planted on the earth ridge inclined surfaces. The earth ridges are arranged in the pond, so that the suitable crab breeding area in the pond is enlarged, the crab breeding density in the pond is greatly increased, and the breeding density can be increased by more than three times in comparison with that of a conventional crab pond; the earth ridges are used for dividing the water area in the pond into the continuous water channels, a water body flows, the dissolved oxygen amount is high, and the slope of each earth ridge is small, so that the crabs can be prevented from making holes.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a high-density culture method for mud crab culture ponds. Background technique [0002] Artificial breeding of crabs has very high requirements on the farms. At present, the ponds for cultivating crabs generally require an area of ​​1-5 mu. Crab ponds have sufficient water sources, good water quality, and easy access to water. The water depth is generally 1-1.5 meters. . The best quality of the bottom of the crab pond is sandy loam and gravel soil, with good ventilation performance, which is conducive to the growth and reproduction of aquatic plants, benthic animals and plants, and can provide natural feed for river crabs. The thickness of the mud at the bottom of the pond is generally not more than 5 cm. Anti-escape facilities, such as brick walls and plastic films, should be built around the crab pond. The water inlet and outlet of the crab pond should be blocked with bar...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, ponds for artificially cultivating crabs have too high requirements on the natural environment, and it is not easy to find suitable farms

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