Method for regulating diapause of aphidius gifuensis ashmead

Abstract

The invention discloses a method for regulating diapause of aphidius gifuensis ashmead. The method provided by the invention comprises following step 1) or 2), wherein the step 1) comprises the following steps of: A, treating aphidius gifuensis ashmead larva at 5-15 DEG C and with a thermoperiod being C18: T6 and a photoperiod being L8: D16 so as to obtain the aphidius gifuensis ashmead in a diapause state; B, carrying out diapause termination on the aphidius gifuensis ashmead in the diapause state to obtain hatched aphidius gifuensis ashmead; and the step 2) comprises the following steps of: C, carrying out diapause treatment on the aphidius gifuensis ashmead larva at a low temperature and with a photoperiod being L8: D16 to obtain the aphidius gifuensis ashmead in the diapause state, wherein the low temperature is no more than 12 DEG C; and D, carrying out diapause termination on the aphidius gifuensis ashmead in the diapause state to obtain the hatched aphidius gifuensis ashmead. The experimental results of the invention show that the method provided by the invention can realize accurate regulation on the development progress of the aphidius gifuensis ashmead.

Description

technical field [0001] The invention relates to the field of biotechnology, in particular to a method for regulating the diapause of Aphids aphids. Background technique [0002] At present, frequent outbreaks of agricultural pests in my country have seriously affected the yield and quality of agricultural products. 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, environment, food safety and so on. Due to the long-term use of chemical pesticides, some pests have developed strong drug resistance, and a large number of natural enemies of various pests have been killed, resulting in rampant damage to some pests. In addition, chemical pesticides will pollute water bodies, the atmosphere and soil, and enrich the human body through the food chain, endangering the health of the population. Using biotechnology to prevent and control pests and diseases can effectively avoid ...

AI Technical Summary

Problems solved by technology

[0003] 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 a 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

Without diapause control technology, natural enemy insects often die before the occurrence of pests, or natural enemy insect products have not been produced when pests occur. bottleneck factor

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