Method for breeding second-season litopenaeus vannamei in overwintering mode with greenhouse

Abstract

The invention relates to a method for breeding second-season litopenaeus vannamei in an overwintering mode with a greenhouse. The breeding period is from the middle ten days of September to May in the next year. The method includes the steps of 1, implementing the key technology of releasing shrimp larvae before installing a greenhouse film in the first season, wherein the shrimp larvae are released in September in advance, and when the water temperature is reduced to 25 DEG C, a greenhouse frame is covered with the light transmitting PVC film; 2, implementing the key technology of intensively marking the shrimp larvae and then breeding the shrimp larvae in a separated mode, wherein a pond accounting for 10-25% of the total breeding area is harvested first in the first season to intensively mark the shrimp larvae of the second season. Preferably, part of original pond water at high temperature in the first season is introduced into water for releasing the shrimp larvae in the second season to ensure that the shrimp larvae adapt to the water temperature; in the whole overwintering stage, the greenhouse is used for controlling the water temperature to be 22-32 DEG C, and the most suitable temperature is 25-30 DEG C. One season production is added compared with common prawn breeding in the greenhouse, litopenaeus vannamei in the first season is harvested at the market demand peak, litopenaeus vannamei in the second season is harvested 20 days earlier than that bred in a pond without a greenhouse, the economic benefits are increased, and the requirement of citizens is met.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for cultivating second-time overwintering Litopenaeus vannamei in a greenhouse. Background technique [0002] Litopenaeus vannamei (commonly known as Litopenaeus vannamei) is an important shrimp farming species in my country. Especially in the southern region, its farming industry is developing rapidly, and its farming scale is constantly expanding. The farming model is gradually developing from extensive to intensive and profitable. , high-density precision farming has become the most important farming model. [0003] In recent years, some coastal areas in southern my country have used the original shrimp breeding ponds to further transform and build fully-covered film-covered ponds and greenhouse structures, and build high-density farms with controllable temperature (winter sheds), water conservation and water conservation, and other farming elements. Breeding ponds...

AI Technical Summary

Problems solved by technology

However, general greenhouse overwintering culture of Litopenaeus vannamei can only be cultured once in winter (October-February of the following year), the production and economic benefits of the culture are low, and it is difficult to meet the market demand

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