Method for culturing high-quality Eriocheir sinensis

Abstract

The invention discloses a method for culturing high-quality Eriocheir sinensis. The method comprises the steps of pond preparation, juvenile Eriocheir sinensis stocking, aquatic plant management, water quality management, gapping on-sale and adult Eriocheir sinensis fattening. A pond is improved through digging out accumulated silt and excessive organic matters of the bottom of the pond, cleaningup the pond and then applying a soil improvement agent prepared from a fermented base fertilizer and an EM (Effective Microorganisms) stock solution, and meanwhile, a variety of aquatic plants are planted, so that the aquatic plant coverage of the pond in different seasons is guaranteed; and the aquatic plants are trimmed regularly, and a fertilizer is applied to promote growth of the aquatic plants and purify water. Meanwhile, beneficial florae are applied to purify the water; and furthermore, due to long-term feedstuff feeding, the water is high in nitrogen content and low in carbon content,thus, brown sugar is required to be applied to maintain a carbon-nitrogen balance of the water and guarantee the pond of fat and tender water, and thus, the growth of the Eriocheir sinensis is facilitated. During fattening of the Eriocheir sinensis, the fat content of feedstuff is increased, and molasses is scattered into the water, so that the amount of planktons of the water is increased, feedstuff of the Eriocheir sinensis is increased, and the growth of the adult Eriocheir sinensis is accelerated. The Eriocheir sinensis cultured by the method disclosed by the invention is full in spawn, delicious in taste and high in quality, is deeply popular to the market and has good economic benefits.

Description

technical field [0001] The invention relates to a method for cultivating high-quality velvet crabs. [0002] technical background [0003] Chinese mitten crab (Eriocheir sinensis), also known as river crab, hairy crab, clear water crab, hairy crab. It is a famous and precious aquaculture species in my country. At present, there are new varieties of Chinese mitten crabs such as "Changjiang No. 1", "Changjiang No. 2", "Guanghe No. 1", "Jianghai 21", and "Noah No. 1". In the past two years, the Eriocheir sinensis breeding farm has gradually transformed from selecting female crabs with a weight of about 2 to 3 taels and male crabs with a weight of about 3 to 4 taels as breeding parents to selecting female crabs with a weight of about 3 to 4 taels. Crabs and 4-6 taels of male crabs tend to be used as parents. However, due to the uncontrollable germplasm resources of the parents, the breeding mode has problems such as late water on the ring ditch, single aquatic plants, lack of ox...

AI Technical Summary

Problems solved by technology

In the past two years, the Eriocheir sinensis breeding farm has gradually transformed from selecting female crabs with a weight of about 2 to 3 taels and male crabs with a weight of about 3 to 4 taels as breeding parents to selecting female crabs with a weight of about 3 to 4 taels. Crabs and 4-6 taels of male crabs tend to be used as parents. However, due to the uncontrollable germplasm resources of the parents, the breeding mode has problems such as late water on the ring ditch, single aquatic plants, lack of oxygen in crab ponds, siltation in old ponds, and excessive organic matter. Problems, such as the low survival rate of crab breeding, the differentiation and variation of the overall size of crabs, etc.