Intensified high-efficient cultivating method of prawns

Abstract

The invention discloses an intensified high-efficient cultivating method of prawns. The cultivating method comprises the following steps: preparation of a prawn pond: basking and disinfecting the pond, eliminating wild fishes, filling water and cultivating water; desalting prawn seeds: selecting health prawn seed with complete appendage, clean surface and appendage, normal figure, tidy specification, good wall attaching behavior and activity, and length of 0.4-0.6 cm; placing seeds in a desalting box, and configuring artificial seawater in the box body; putting the prawn seeds in the prawn pond; performing the early-period cultivation in the 1st- 20 days, feeding mixed feed twice per day; water quality control: feeding microbial growth regulating agent at intervals of 10-15 days at the middle and post periods of cultivation, wherein the feeding amount is 1.5-2.5 g per cubic meter, and the microbial growth regulating agent is used for removing harmful matter ammonia gas NH3 and nitrogen dioxide NO2 in the water; biological prevention and control: harvesting prawns, and fishing the prawns by a trawl, and a prawn cage in the morning; for the prawns cannot feed at 18 DEG C below, or stops growth namely; the prawns are died when water temperature is 7 DEG C; therefore, prawns must be marked before the end of October.

Description

technical field [0001] The invention relates to a high-efficiency circulation breeding system, which belongs to the technical field of breeding. Background technique [0002] In recent years, shrimp farming has developed rapidly in China. In 2007, the total output of shrimp farming in my country reached 1.26 million tons, accounting for about 37% of the world's total farming output. At present, my country has become the country with the largest shrimp output. With the expansion of the scale of prawn farming, the farming model is also constantly innovating, from extensive farming to semi-intensive, intensive, facility-based, factory-based, intensive farming models, or the coexistence of multiple farming models. Due to the pursuit of yield and economic benefits, high-yield and high-density farming has always been the mainstream. While this high-density culture mode greatly increases the production of prawns, the pollution to the culture water body and the surrounding water en...

AI Technical Summary

Problems solved by technology

Its disadvantage is that there is a large number of water changes and heavy pollution in the polyculture method.