A kind of culture method of preventing disease and increasing production of freshwater shrimp in spring

Abstract

The invention discloses a disease resisting and yield increasing culture method for freshwater shrimps in spring. The method comprises the steps as follows: a pond without silt at the bottom is selected, pond water is pumped off in the first ten days of January, the pond is exposed to the sun, and quicklime is sprayed uniformly to the bottom of the pond; after water is injected to 6-8 cm in the first ten days of February, Hydrilla verticillata is planted uniformly in a spray sowing manner at the bottom of the pond, water is injected, then alternanthera philoxeroides is planted in a shallow water zone of the pond, and water is injected; a dense-mesh net is arranged in the middle of the pond, young shrimps are cast into the pond in a sunny early morning in the first ten days of March, and silver carp is cast into the pond after a period of time; after casting, the young shrimps are fed with finely granulated feed once in the morning and once in the afternoon every day; after casting for a period of time, the young shrimps are fed with coarsely granulated feed once in the morning and once in the afternoon every day; quicklime and a copper sulfate aqueous solution are introduced into the pond regularly; the water at the bottom of the pond is pumped once each week from the last ten days of May to fishing time, the water level of the pond is reduced, then a fresh water source is supplemented to the water level before reduction, and air is pumped into the pond simultaneously; fishing is performed in a cloudy afternoon after casting for a period of time.

Description

technical field [0001] The invention relates to the technical field of spring freshwater shrimp cultivation methods, in particular to a spring freshwater shrimp cultivation method for disease prevention and production increase. Background technique [0002] Green prawn is the freshwater prawn with the largest output in my country. Its meat is tender, delicious, nutritious, and has a high protein absorbability rate. It has become a delicacy on the dining table of more and more citizens. The cultivation of freshwater shrimp is divided into two seasons, spring and autumn. The cultivation in spring matures quickly and the market price is high, which is the batch of freshwater shrimp with higher income for farming enterprises. However, at the turn of spring and summer, mosquitoes breed, and various diseases and insect pests can easily pose a serious threat to the growth and development of freshwater shrimp. Generally, quicklime and copper sulfate solutions are commonly used to re...

AI Technical Summary

Problems solved by technology

However, at the turn of spring and summer, mosquitoes breed, and various diseases and insect pests can easily pose a serious threat to the growth and development of freshwater shrimp. Generally, quicklime and copper sulfate solutions are commonly used to regularly disinfect the breeding ponds. However, this method cannot fundamentally solve the self-resistance of freshwater shrimp. Therefore, how to improve the resistance of freshwater shrimp in the feeding feed, as an important auxiliary method of the above two methods, to prevent diseases and increase production has become the focus of current research in the industry