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桃小食心虫(Caxposina nipponensis)是危害苹果枣、山楂等果树的一种主要蛀果害虫,常给果树生产带来很大损失。特别是山区防冶较差的果园,虫果率常达50％以上,枣产区果实被害率高达90％以上。对其越冬出土期的地面防治长期以来依靠喷洒化学杀虫剂,虽有较好的防治效果,但有污染环境和杀伤天敌等不良副作用,限制了它的应用发展。昆虫病原线虫是目前内外发展较快的一类很有希望的生物控制因子。我们从1990年
Caxposina nipponensis is a major fruit pest infesting fruit trees such as apple jujube and hawthorn, which often causes great losses to fruit trees. Especially in mountainous area, the fruit orchard with poor control of weeds is often over 50%, and the fruit damage rate of jujube producing area is over 90%. The prevention and control of its surface during the winter unearthed relies on spraying chemical insecticides for a long time. Although it has good control effects, it has adverse effects such as environmental pollution and natural enemies, which restrict its application and development. Entomopathogenic nematodes are a promising class of biological control agents that are rapidly evolving both internally and externally. We from 1990