Method for ecological breeding of river crabs in hilly region sloping fields in southern China

Abstract

The invention provides a method for ecological breeding of river crabs in hilly region sloping fields in southern China, and relates to the field of aquaculture. According to the method, an ophicephalus argus pond and a river crab pond are built on a sloping field in a stepped manner, wherein the river crab pond is in a lower position; the ophicephalus argus pond is used for changing the weak acidity of stream water; moreover, the excrement of the ophicephalus argus falls into the river crab pond via a water suction pipe, a flood-prevention pipe and a drain pipe, so as to provide a certain amount of nutrients to the growth of the river crabs; a hypophthalmichthys molitrix is put in the river crab pond to control the density of plankton in the river crab pond; meanwhile, a stream is introduced into the highest level of the ophicephalus argus pond, so that the river crab pond is supplemented with fresh air when stream water falls into the river crab pond, and a large quantity of river crabs can be bred on the sloping field; furthermore, feed fed every day is prepared according to a large quantity of practice; herba houttuyniae, herba lysimachiae, alfalfa, barbed skullcap herb and chrysanthemum coronarium added into the river crab synthetic feed according to proportions can not only perform an anti-inflammation and bactericidal effect, but also prevent the river crabs 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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