多年来,我国大田及园艺作物几乎年年遭受害虫的暴发为害,其损失和危害性居病虫草害等之首。其中对稻纵卷叶螟、稻飞虱、二化螟、甜菜夜蛾、小菜蛾等多种害虫的控制措施仍以药剂防治为主,而且无耐之中还不断伴有害虫抗药性的威胁。特别是上世纪70至90年代初,害虫如棉铃虫、褐飞虱、小菜蛾等,抗药性已达数千倍,在多种害虫的猖獗为害面 Over the years, field and horticultural crops in our country have been victimized by the outbreak of pests almost every year, with losses and dangers such as pest and disease first. Among them, the control measures against various pests such as rice leaf roller, planthopper, rice stem borer, beet armyworm, diamondback moth and diamondback moth are still dominated by chemical agents, and insecticide resistance is constantly accompanied by insensitivity . Especially in the early 1970s and early 1990s, pests such as cotton bollworm, brown planthopper, diamondback moth and so on, the resistance has reached thousands of times, in a variety of pests rampant damage surface