Manual breed conservation method of synonycha grandis adults in wintering period

Abstract

An indoor artificial preservation method of synonycha grandis adults in a wintering period is characterized in that an outdoor wintering environment of the synonycha grandis adults is simulated indoors, a large amount of the synonycha grandis adults in sugar cane fields are collected in late November every year before cold winter and put in the indoor wintering environment, bred by an artificial feed and protected for wintering; the simulated wintering environment is formed by vertically putting 6-8 sections of withered sugar cane sheaths with the length to be 15-20cm in a glass tank with the size that is 18cm is multiplied by 30cm, and arranging a petri dish with the diameter to be 5cm at the tank bottom. The tank is added with absorbent cotton which fully absorbs sugar cane water, and tightly covered with a metal gauze at the opening of the tank. The indoor artificial preservation method of the synonycha grandis adults has the advantages of obviously improving the wintering survival rate of the ladybugs, good preservation effect, effectively and safely protecting wintering for the adult ladybugs, convenient operation and easy mastery. The indoor artificial preservation method is a set of simple and feasible method, and is widely applicable to sugar cane areas.

Description

Technical field: [0001] The invention relates to an artificial seed preservation method for the overwintering stage of adult beetle beetles. Background technique: [0002] The sugarcane cotton aphid Ceratovacuna lanigera Zehntner belongs to Homoptera and Aphididae. It is one of the main pests in sugarcane production, and its occurrence area can reach more than 80% of the planting area. Damaged cane generally reduces yield by 13.7% to 24.6%, heavy ones reduce yield by more than 50%, and sucrose content decreases by 10% to 40%. At present, the control of sugarcane cotton aphid mainly relies on chemical pesticides. Due to the long-term continuous use of highly toxic and broad-spectrum pesticides, it not only kills a large number of natural enemies of pests in nature, destroys the ecological balance, causes pests to develop resistance, and pollutes the environment. It is also easy to cause Pesticide residues in sugar are harmful to human health. Therefore researching and devel...

AI Technical Summary

Problems solved by technology

The main reasons are: on the one hand, the overwintering survival rate of ladybugs is low under natural conditions, and secondly, the natural overwintering places of ladybugs are artificially destroyed when sugarcane is harvested, and a large number of overwintering ladybugs die due to the burning of sugarcane leaves.