Method for ecologically cultivating river crabs in sloping fields in southern hilly regions

Abstract

The invention provides a method for ecologically cultivating river crabs in sloping fields in southern hilly regions, and belongs to the field of aquaculture. Three grass carp ponds and one river crab pond are arranged in the sloping field and in a step mode, the river crab pond is arranged at the lowest position; the grass carp ponds are used for changing the weak acid property of the stream, the excrement of the grass carps falls into the river crab pond through a water suction pipe, a flood control pipe and a drainage pipe to provide certain nutrients for the growth of the river crabs, and a silver carp is put in the river crab pond to control the density of plankton in the river crab pond; meanwhile, the stream is also introduced into the highest grass carp pond, fresh air is supplemented when the stream falls down to the river crab pond, so that a large amount of river crabs can be cultured in the sloping field. The feed fed every day is prepared by a large amount of practice, the herba houttuyniae, longhairy antenoron herb, alfalfa, barbed skullcap herb and chrysanthemum coronarium contained in a synthetic feed for the river crabs according to a certain proportion have an anti-inflammatory and bactericidal effect, so that the river crabs can be prevented from suffering from saprolegniasis.

Description

Technical field [0001] The invention relates to the field of aquaculture, in particular to a method for ecologically cultivating river crabs on slopes in southern hilly areas. Background technique [0002] River crabs are also called "crabs" and "hairy crabs". The carapace formed by the combination of the head and the chest is square and hard in texture. There are a pair of eyes at the front of the body and two pairs of very sharp crab teeth on the side. They often burrow on the mud banks of rivers, rivers, lakes and marshes. They are active at night and feed on fish, shrimps, animal carcasses and grains. They often migrate every autumn. It lays eggs at the estuary of the sea, hatches in March to May of the next year, and develops into juvenile crabs. The meat is fresh and tender and is a favorite food. [0003] The southern hilly area has abundant water resources, but less flat land. With the growth of China's population and social development, more and more flat land is used to ...

AI Technical Summary

Problems solved by technology

[0003] The southern hilly areas are rich in water sources, but have less flat land. With the growth of China's population and the development of society, more and more flat land is used to build houses and factories. As the scope of land acquisition becomes wider and wider, agricultural land is gradually reduced. , the production range of river crabs is also gradually decreasing; therefore, it is imminent to provide a new farming method to produce high-quality river crabs to replace some of the original river crabs cultured in plain lakes

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