River crab and cray polyculture method

Abstract

The invention discloses a river crab and cray polyculture method. The river crab and cray polyculture method comprises the following steps: cleaning up of a pond, planting of water plants, throwing in of snails, stocking of seeds, throwing in of feeds and final-period management. Scientific management is adopted to reduce the morbidity, so that the survival rate and the yield are improved; and the river crab and cray polyculture method has favorable economical benefits.

Description

technical field [0001] The invention belongs to the field of freshwater aquaculture, and in particular relates to a method for polyculture of river crabs and crayfish. Background technique [0002] River crab is a kind of economic crab, also known as hairy crab, hairy crab, clear water crab or crab, which is a well-known delicacy in China. Its chelicerae are used for feeding and fighting against enemies, and the inner and outer edges of the palm are densely covered with hairs, hence the name mitten crab. Hairy crab is a delicacy that people love. It is not only delicious but also has high nutritional value. [0003] Crayfish are also called Procambarus clarkii, red crayfish and freshwater crayfish. It is shaped like a shrimp and has a hard shell. The adult is about 5.6-11.9 cm long, dark red, the carapace part is nearly black, and there is a wedge-shaped stripe on the back of the abdomen. Juvenile shrimps are uniform gray, sometimes with black ripples, long and narrow cl...

AI Technical Summary

Problems solved by technology

This year, Jiangnan and other places have begun to interbreed river crabs and lobsters, and achieved good results. However, there are still problems such as low survival rate, relatively small number of intercultured crayfish, low yield and unscientific management.