A Preparation Method Favorable for Leeches Overwintering

Abstract

The invention relates to the technical field of leech cultivation, in particular to a preparing scheme beneficial to leech overwintering. The preparing scheme includes the following steps: in one week before the winter begins, throwing snails and grass stems into a leech cultivation pond, in the half week before the winter begins, loosening soil on the shore side close to the water surface of the cultivation pond, meanwhile, evenly mixing nutrient baits into the soil, after two weeks after the winter begins, fixing a plastic shed on the surface of the loosened soil layer, and keeping the vertical distance between the water surface of the cultivation pond and the shore side ranging from 20cm to 30cm. Compared with the prior art, the preparing scheme has the advantages that it can be guaranteed that leeches can take a proper number of foods in winter, the leeches can sufficiently absorb a certain amount of nutrition before overwintering by throwing the snails, the leeches or other bionts can overwinter on the grass stems through the arrangement of the grass stems, the leeches can conveniently burrow to enter the soil to take the proper number of foods through the scheme of loosening the soil and mixing the nutrient baits, the soil can be kept at a certain temperature and humidity through the arrangement of the plastic shed, and the preparing scheme is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of leech cultivation, in particular to a preparation scheme for leech overwintering. Background technique [0002] At present, there are more than 500 kinds of leeches discovered in the world. Leeches belong to the phylum Annelida, commonly known as leeches, horse turtles or inner drills. They usually live in freshwater lakes, rivers, ponds, ditches or rice fields under natural conditions. . Due to the low temperature in winter, when the temperature is lower than 13°C, the leeches will automatically drill into the mud for the winter and rarely eat. Oviposition in March of the next year, due to relying on their own physical fitness to survive the winter, leeches in March are weak in physical fitness, which easily leads to a low spawning rate of leeches, and the overall quality of leech eggs produced is low, and the hatching rate is low. Contents of the invention [0003] The technical problem to be solved...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a preparation plan for leeches with weaker physical fitness for the lower spawning rate, lower overall quality of leech eggs, and lower hatching rate.