Cultivation method of large-specification juvenile eriocheir sinensis

Abstract

The invention provides a cultivation method of large-specification juvenile eriocheir sinensis. The cultivation method comprises the steps of selecting a crab pool, regulating the water quality, planting alternanthera philoxeroides, selecting juvenile crabs, feeding the juvenile crabs, harvesting and the like. The breeding variety is 'Noah No. 1' of eriocheir sinensis, is a new variety of river crabs certificated by the National Aquatic Stock Seed and Fine Breed Certification Committee in 2016 and has the advantages of being high in growth speed, high in large-specification rate and the like.The planted aquatic plants are mainly alternanthera philoxeroides, alternanthera philoxeroides has a strong purifying capability, during high temperature in summer, the aquatic plants are not rotted,the water quality is not deteriorated, and it is guaranteed that the pool has good water quality in the breeding cycle. The specification of the put juvenile crabs is 140,000-160,000 per kg, 1.0-1.25kg of the juvenile crabs are put per mu, 200 kg or above of the juvenile crabs are harvested, the proportion of the large-specification juvenile crabs reaches 70% or above, and the problems that the juvenile crabs are subjected to sexual precocity, small in size, poor in quality and low in economic benefit are solved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for cultivating large-scale Chinese mitten crabs. Background technique [0002] Chinese mitten crab (Eriocheir sinensis), also known as hairy crab, hairy crab, clear water crab, river crab or crab, has delicious meat and high economic value, and is deeply loved by consumers, especially large-sized river crabs. Smaller sizes are much higher. However, in the cultivation of large-scale river crabs, an important hurdle is whether the crabs are successfully bred. Large-scale crabs can easily obtain high-quality river crabs after several months of cultivation. Therefore, the cultivation of large-scale crabs is very important. . However, in the cultivation of buckle crabs, many farmers have failed to select seedlings, increased the breeding density at will, improper feed feeding, poor management of aquatic plants, poor water quality control, water quality dete...

AI Technical Summary

Problems solved by technology

However, in the cultivation of buckle crabs, many farmers fail to select seedlings, increase the breeding density at will, improper feed feeding, poor management of aquatic plants, poor water quality control, water quality deterioration in summer high temperature, and increased mortality, resulting in the breeding of buckle crabs. Crabs are precocious, small in size, poor in quality, low in economic benefits, and unable to meet the expected breeding goals