Efficient breeding method for river crabs in pollution-free pond

Abstract

Disclosed is an efficient breeding method for river crabs in a pollution-free pond. The pond is rectangular and in an east-west direction, the length-width ratio of the pond is 2:1, the water plant planting area of the pond is 60% and positioned in the middle of the pond, an annular ditch with the width of 70-80cm is dug in the periphery of the pond to serve as a holding pond for the river crabs, the crab breeding density of the pond needs to be controlled within 600-700 crabs / mu, transparency of pond water is higher than 30cm when the river crabs shell for the first time and the second time, transparency of the pond water is higher than 50cm when the river crabs shell for the third time and the fourth time, transparency of the pond water is higher than 80cm when the river crabs shell for the fifth time, and calcined lime water is periodically splashed into the crab pond once a month.

Description

technical field [0001] The invention relates to an aquaculture method, in particular to a high-efficiency cultivation method for river crabs in a pollution-free pond. Background technique [0002] With the rapid development of my country's economy and the general improvement of people's living standards, people are no longer satisfied with popular aquatic products such as common carp, silver carp and bighead carp on the table, but gradually turn to high-quality aquatic products such as river crabs. In the production of river crabs, it has also realized the transformation from quantity speed type to quality benefit type, from "big crab farming" to "big crab farming", especially paying more attention to ecology, safety, environmental protection, health, and pollution-free The cultivation of aquatic products has higher and higher requirements on the quality of aquatic products. For now, the simple pursuit of the high-density, high-yield small-scale commercial crabs in the past...

AI Technical Summary

Problems solved by technology

For now, simply pursuing the high-density and high-yield small-scale commercial crabs in the past no longer has a competitive advantage and does not meet market demand. It is difficult to sell, the market price is low, and the breeding benefits are poor.