Leis dimidiata diapause maintenance and long-term storage method

Abstract

The invention discloses a leis dimidiata diapause maintenance and long-term storage method comprising the following steps: (1) leis dimidiata in a diapause status is selected as a diapause maintenance object, wherein the leis dimidiata in the status enters the diapause status in an early eclosion adult stage; (2) the leis dimidiata selected in the step (1) is placed under a diapause maintenance environment; through regulating the combination of illumination duration and temperature every day, the diapause status of the leis dimidiata is maintained, wherein the everyday illumination duration is calculated according to a formula of photoperiod (2-6)L:(22-18)D, the temperature is 10-15 DEG C, and the storage duration is 300-400 days. According to the invention, through a combination of the control over the environmental factors and necessary treatment measures, precise control over the diapause duration of the excellent predatory natural enemy insect, leis dimidiata, is realized. The diapause maintenance can exceed 365 days, such that technical support is provided for all-year-round large-scale productions of leis dimidiata.

Description

technical field [0001] The invention relates to a method for diapause maintenance and long-term storage of red-shouldered ladybug, through which the diapause adult red-shouldered ladybug can be stored and maintained for a long time. Background technique [0002] The crop yield loss caused by agricultural diseases and insect pests in my country is 10-15% every year. Realizing the scientific control of agricultural diseases and insect pests has important economic and social benefits for ensuring the implementation of the national food security strategy and promoting agricultural high yields. Aphids are the largest pests in agricultural production, and the global losses caused by aphids are nearly 5 billion US dollars each year. At present, chemical insecticides are mainly used to prevent and control aphids. [0003] In the process of controlling agricultural pests, if we blindly rely on chemical pesticides, it will bring a series of negative problems in terms of ecology, envir...

AI Technical Summary

Problems solved by technology

[0004] At present, a bottleneck problem in the industrialization of natural enemy insects at home and abroad is: natural enemy insects have a long propagation cycle and short survival period, and it is difficult for the product delivery time to coincide with the occurrence period of pests, which often leads to the death of natural enemies before the occurrence of pests, or the occurrence of pests. Occurs when no natural enemy product is available

However, in actual production and application, there are often problems such as short multiplication cycle, long-term storage and timely application of products, and diapause of adults, which affect the multiplication efficiency, which has become a technical bottleneck restricting the large-scale production and application of red-shouldered ladybug.

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