近几年来,我省利用白僵菌防治马尾松毛虫,已在生产中广泛推广,有效地控制了松毛虫的危害,深受群众欢迎。但在应用白僵菌防治农林害虫的时候,是否会使柞蚕感病率提高,影响柞蚕生产?在蚕区,是一个未解决的问题。为了查明这个问题和提出相应有效防止措施,我们于一九七二年至一九 In recent years, the use of Beauveria bassiana in our province to control Dendrolimus punctatus, has been widely promoted in production, effectively controlling the damage of pine caterpillars, welcomed by the masses. However, the application of Beauveria bassiana control pests in agriculture and forestry, will make the tussah’s susceptible rate increased, affecting tussah production? In the silkworm area, is an unsolved problem. In order to identify this problem and put forward corresponding effective measures to prevent it, we conducted a study from 1972 to 19