长期使用农药易使蚧类产生抗药性,因而利用天敌防治柑桔蚧类为害被日益重视。常见的柑桔蚧类的致病微生物多为真菌类,最重要有为蜡蚧轮枝菌 Verticillium lecanii (Zimm) Viegas。该菌广泛分布于热带,亚热带和温带,我国大陆于1982年首先在贵州发现,以后在南方几个省市相继发现,且分布较广泛。当田间温度在18～28℃,RH(相对湿度)>85％时极易引起感染流行,可使多种柑桔介壳虫大量死亡。如在黄昏时喷施菌液,还可达到更高的感染率。本菌寄主范围广,无毒,安全,害虫对它产生抗性慢或不产生抗性,与有些杀虫剂、杀真菌剂和杀螨剂 Long-term use of pesticides easily Kuwana class of drug resistance, and therefore the use of natural enemies citrus pest class harm is paid more attention. Common Citrus Kuwana class of pathogenic microorganisms are mostly fungi, the most important are Verticillium lecanii (Zimm) Viegas. The bacteria are widely distributed in tropical, subtropical and temperate, mainland China first discovered in Guizhou in 1982, after several provinces and cities in the south have been found, and more widely distributed. When the field temperature at 18 ~ 28 ℃, RH (relative humidity)> 85% easily lead to the prevalence of the infection, can make a large number of Citrus insects a large number of deaths. Spraying bacteria liquid at dusk can also achieve a higher infection rate. The host wide range of host bacteria, non-toxic, safe, pests produce slow or no resistance to it, and some insecticides, fungicides and acaricides