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1975年4月23—28日在武汉召开了全国生物防治“以菌治虫”科研协作会议。参加会议的有23个省、市、自治区科研、生产、教学单位的102名代表。从会上总结交流的经验来看,自1974年以来,全国“以菌治虫”工作进展较快,以菌防治农林害虫的面积已达1,300万亩,防治面积较大的有湖北、广东、吉林、黑龙江、天津等省、市。 在利用真菌治虫方面,各地应用白僵菌防治松毛虫及玉米螟,一般防效达80％以上。吉林省用白僵菌封垛防治玉米螟,降低
April 23-28, 1975 in Wuhan held a national biological control “to bacteria” research collaboration. There were 102 representatives from 23 scientific research, production and teaching units of 23 provinces, cities and autonomous regions attending the conference. From the experiences of meeting and exchange at the meeting, since the year of 1974, the work of “controlling bacteria by bacteria” has made rapid progress in China. The area of pest and disease control with fungi has reached 1,300 mu. There are more prevention and control areas in Hubei, Guangdong and Jilin , Heilongjiang, Tianjin and other provinces and cities. In the use of fungi pest control, the application Beauveria bassiana and corn borer control, the general effect of more than 80%. Jilin Province with Beauveria bassiana seal fight corn borer, reduce