Energy-saving and environment-friendly indoor overwintering method for scylla paramamosain in northern areas

Abstract

The invention provides an energy-saving and environment-friendly indoor overwintering method for scylla paramamosain in northern areas, and belongs to the field of aquaculture. The method comprises overwintering pond reformation, parent crab selection, overwintering management and overwintering waste water recycling. The method provided by the invention increases the overwintering survival rate ofparent crabs and reduces production cost, and lays the foundation for realizing large-scale breeding of fingerlings of the scylla paramamosain and healthy and orderly development of breeding industry.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to an energy-saving and environment-friendly indoor overwintering method for blue crabs in northern regions Background technique [0002] In recent years, the blue crab breeding industry represented by the blue crab has shown a momentum of vigorous development in my country, with a breeding area of ​​about 350,000 mu and an annual output of more than 150,000 tons, mainly concentrated in the south of the Yangtze River. The traditional cultured crabs in the northern region are mainly Chinese mitten crab and Portunus trituberculatus. Along with the structural adjustment of the farming industry and the continuous expansion of consumer market demand, the farming industry presents farming models such as north-south relay, land-sea relay, and indoor-outdoor relay. , Further speeding up the popularization level of cultured species. As one of the leading species in the structural adju...

AI Technical Summary

Problems solved by technology

Relevant studies have shown that the optimum water temperature for overwintering is 12-20°C, while the seawater temperature in northern regions is below zero in winter. If seawater is used as water for parent crabs overwintering, boilers and other equipment are required to raise the temperature. In addition, under the pressure of environmental protection, boilers have basically completed coal-to-gas conversion. According to calculations, the cost of gas alone is more than three times higher than that of coal, which greatly increases the production cost during the wintering period of parent crabs.