River crab ecological breeding method

Abstract

A river crab ecological breeding method comprises the steps of river crab feed grain planting and river crab breeding, wherein river crab feed grains are planted in the farmland first, and then the farmland is transformed into a breeding pond for breeding river crabs, so that the ecological breeding mode of harvesting twice in one year is achieved; the varieties of plants planted as the river crab feed grains comprise winter wheat, winter barley, astragalus sinicus, oilseed rape and various overwintering forage grass, vegetables and traditional Chinese medicine crops; the river crab feed grain planting is conducted in November in the first year, feed grain plants are planted and harvested in spring in the second year, and after being harvested, the feed grains are packaged and fermented to be used for feeding the river crabs. River crab breeding comprises the steps of breeding pond construction, river crab stocking, aquatic weed cultivation, feeding management and temporary rearing in a temporary rearing pond. The ecological breeding method effectively solves the problem of river crab breeding by means of the breeding method that the feed grains and the river crabs are harvested many times a year.

Description

Technical field [0001] The invention relates to the technical field of river crab breeding, in particular to a method for ecological breeding of river crabs. Background technique [0002] The scientific name of the river crab is the Chinese Eriocheir sinensis. It is a rare freshwater product, also known as hairy crabs and crabs. The meat is delicious and the flavor is unique. It has the highest economic value among more than 500 kinds of freshwater crabs in my country. It is a specialty of my country. It grows in freshwater and reproduces in seawater. Crabs. Since the 1980s, the production form of river crabs has changed from natural fishing to artificial breeding, and has formed a larger production scale, becoming a pillar industry in my country's freshwater aquaculture. [0003] Crab breeding costs account for about 70% of crab bait, which is a key factor affecting the efficiency of crab breeding, especially in the north due to low technology and short growth period. It is difficu...

AI Technical Summary

Problems solved by technology

[0003] Crab bait accounts for about 70% of the breeding cost of river crabs, which is the key factor affecting the breeding benefits of river crabs. Especially in the north, it is difficult to guarantee the benefits of breeding river crabs every year due to low technology and short growth period, which greatly affects the enthusiasm and stability of river crab farming. At the same time, increased food consumption has affected my country's food security