Method of performing polyculture to Odontobutis obscura in crab pool

Abstract

The invention discloses a method of performing polyculture to an Odontobutis obscura in a crab pool, and belongs to the field of aquaculture. The method comprises the following steps of: in February to March, self-fertile crabs and Odontobutis obscura parents are placed in a pool, or in May, the self-fertile crabs and the Odontobutis obscura parents are placed in the pool; before stocking, the crabs and fishes are respectively disinfected and sterilized; river crab baits are placed into the pool to feed the crabs and the fishes; during a cultivation period, fresh water is periodically injected into the crab pool, and applied with microbial preparations, such as photosynthetic bacteria, EM (effective microorganisms) bacteria and bacillus, and bottom modifying products to improve water quality and substrate; and during the cultivation period, a waterweed area is controlled to be 1 / 3-1 / 2 of a whole water surface; and the crab pool is performed with insect killing and disinfected at regular intervals. In the method, growth and physiological characteristics of the Odontobutis obscura and river crabs are integrated, and the fishes and the crabs are reasonably managed and fed, thus, both yields are improved; 15-20kg of fishes and the crabs can be obtained per Mu, and economic benefits of the crab pool in a unit area is improved by 25%-30%.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for polyculture of sand pond snakeheads in crab ponds. Background technique [0002] A few days ago, with the popularization of the river crab farming industry, the breeding area continues to increase, and the output of river crabs also continues to increase, but the market price of commercial crabs is getting lower and lower, resulting in unsatisfactory economic benefits of river crab farming. Channa is a small freshwater economic fish belonging to the order Perciformes, Channaidae, and the genus Channa. It has few muscle spines, high meat content and rich nutrition. At present, the method of interbreeding river crabs, crucian carp, and mandarin fish has matured day by day, but with the development of economic fish species and the diversification of people's needs, Snakehead is gradually favored by people, but the method of interbreeding river crabs and Snakehead is currently...

AI Technical Summary

Problems solved by technology

At present, the method of interbreeding river crabs, crucian carp, and mandarin fish has matured day by day, but with the development of economic fish species and the diversification of people's needs, Snakehead is gradually favored by people, but the method of interbreeding river crabs and Snakehead is currently never appeared