我国有螨类500余种,危害较大的有40余种,主要种类为叶螨类、瘿螨类,主要危害果树、棉花、麦类、蔬菜、烟草和茶树等作物以及牛、羊、猪和鸡等畜禽类,其中受危害最严重的是柑橘树、苹果树和棉花。对农业有害的螨类具有体积小、繁殖快、适应性强及易产生抗药性等特点,是公认的最难防治的有害生物群落。目前杀螨剂品种约占杀虫剂总数的10%左右。预计到 There are more than 500 species of mites in our country, more than 40 species are most harmful. The main species are spider mites, scabies and mites, and crops that are mainly harmful to fruit trees, cotton, wheat, vegetables, tobacco and tea trees as well as cattle, sheep and pigs And chickens and other livestock and poultry, of which the hardest hit are citrus trees, apple trees and cotton. Mites harmful to agriculture have the characteristics of small size, rapid propagation, adaptability and easy to produce drug resistance, is recognized as the most difficult to control the pest community. At present, acaricide varieties account for about 10% of the total number of pesticides. Expected to