Method for breeding procambarus clarkii spring seedlings in pond

Abstract

The invention provides a method for breeding procambarus clarkii spring seedlings in a pond. A pot bottom-shaped pond structure is replaced by a structure formed by a circular groove and a shallow, so that the enlargement of a burrowing breeding area of crawfish, the complete freezing-drying of the pond, the enlargement of a feeding area and the like are facilitated; a step-by-step precipitation method is used for guiding the burrowing overwintering and reproduction of the crawfish, and straws are used for preserving heat and protection against cold; aquatic plants are arranged in two stages, corrugated clay tile shelters are arranged among the aquatic plants, so that the perching area of the crawfish is enlarged, and fresh and tender green feeds are provided; fertilizers are applied to cultivate sufficient natural bait organisms in three stages to ensure the fertility of water in the pond, so that the rapid growth of the aquatic plants is facilitated, and sufficient high-quality natural biologic baits are cultivated for feeding the crawfish; the above measures have the advantages of strengthening the physique of the crawfish, increasing the overwintering survival rate of the crawfish, reducing the probability of cannibalization of the seedlings, increasing the proportion of the spring seedlings, improving the specification uniformity of the seedlings and the like, and are significant for improving the unit breeding yield and economic benefits of the pond.

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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