Method for ecologically culturing river crabs in southern hilly area slope land

Abstract

The invention provides a method for ecologically culturing river crabs in southern hilly area slope land, and relates to the field of aquaculture. The method comprises the steps that three grass fish ponds and a river crab pond are arranged on the slope land in a stepped mode, and the river crab pond is located at the lowest position; the grass fish ponds are used for changing the weak acidity of brook water, excrement of grass fishes falls into the river crab pond to provide certain nutrients for growth of the river crabs, and a silver carp is put into the river crab pond to control the density of plankton in the river crab pond; meanwhile, a brook stream is introduced into the highest grass fish pond, fresh air is supplemented when the brook water flows through the grass fish pond to fall into the river crab pond, manual oxygen supplementation is not needed, and a large quantity of river crabs can be cultured in the slope land; in addition, feed put everyday is prepared through a lot of practice, herba houttuyniae, herba lysimachiae, alfalfa herb, herba scutellariae barbatae and crowndaisy chrysanthemum which are matched in proportion in synthetic feed for the river crabs have the anti-inflammatory and bactericidal effects, and therefore 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 "hair crabs". The carapace formed by the combination of the head and the chest is square and hard. There is a pair of eyes on the front of the body, and two pairs of very sharp crab teeth on the side. It often lives in caves on the mud banks of rivers, lakes and lakes. It is nocturnal and feeds on fish, shrimp, animal carcasses and grains. It often migrates every autumn. They go to the estuary where they go to the sea to lay eggs, and hatch from March to May of the next year. After developing into young crabs, the meat that goes back to the river is fresh and tender, and it is a popular food. [0003] The southern hilly areas are rich in water sources, but have less flat land. With the growth of China's population and the developmen...

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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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