A kind of spring seedling breeding method of Procambarus clarkii in pond

Abstract

The invention provides a method for spring seedling breeding of Procambarus clarkii in ponds. By changing the "pot-bottom-shaped" pond structure into a "circular ditch + shoal" structure, it is beneficial to increase the breeding area of ​​crayfish digging holes, completely freeze the pond, increase Feed feeding area, etc.; use the method of gradual precipitation to induce crayfish to dig holes for overwintering and reproduction, and use rice straw to keep warm and keep out the cold; set up aquatic plants in two stages, and set up corrugated clay tile concealment between aquatic plants to increase the habitat area of ​​crayfish, and Provide fresh and tender green feed; fertilize in three stages to cultivate sufficient natural bait organisms to ensure the fertility of the pond water, which is not only conducive to the rapid growth of aquatic plants, but also cultivates sufficient high-quality natural biological bait for crayfish to feed on; The advantages of improving the survival rate of crayfish overwintering, reducing the probability of cannibalism of shrimp seedlings, increasing the proportion of spring seedlings and the uniformity of shrimp seedlings are of great significance to improving the production of seedlings per unit of ponds and economic benefits.

Description

technical field [0001] The invention relates to a method for breeding shrimp seedlings, in particular to a method for breeding spring seedlings of Procambarus clarkii in ponds. Background technique [0002] Procambarus clarkii ( Procambarus clarkii ), commonly known as freshwater crayfish, originated in North America and was introduced into my country by Japan in 1929. After decades of natural reproduction and artificial breeding, it has become one of the important freshwater economic shrimps in my country. Its demand in the domestic catering industry, vegetable markets, and supermarkets is hot, and the supply of deep-processed products such as exported shrimp and whole shrimp is in short supply, which drives the rapid development of the Crawfish farming industry in my country and directly drives the increasing demand for seedlings. The traditional pond breeding technology of Procambarus clarkii in my country mainly adopts a pot-bottomed pond structure; after October, the w...

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Problems solved by technology

[0003] The present invention aims to solve the defects of the traditional seedling breeding method, transform and innovate from the aspects of pond structure transformation, aquatic plant setting, concealment setting, induced breeding, overwintering management, spring seedling cultivation, etc., so that most of the shrimp seedlings leave the mother body in spring, Spring seedling cultivation provides a method for spring seedling breeding of Procambarus clarkii in ponds, which is conducive to increasing the area of ​​crayfish burrowing, thoroughly freezing and drying ponds, increasing the area of ​​feed feeding, cultivating natural biological bait, increasing crayfish hiding places, The setting of aquatic plants, increasing the proportion of shrimp seedlings in spring, and improving the uniformity of shrimp seedlings can increase the amount of shrimp seedlings per unit area and economic benefits

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