应用微孢子虫防治云南松毛虫试验

Study on Applying Microsporozoites to Control Dendrolimus honi

用不同浓度的玉米螟微孢子虫悬浮液 ,饲喂及浸泡感染 1、2、4、7龄云南松毛虫幼虫。试验结果表明 :幼虫感染微孢子虫病的死亡率随幼虫龄期的增大而减弱 ,随孢子浓度的增加而增大。老熟幼虫对微孢子虫的抗性较强。

Various corn borer microsporozoites were used to feed and soak Dendrolimus honi larvae at the instar of 1,2,4 and 7 for infecting them.The experimental results reveal that the infective mortality of larva microsporidiosis reduces with the increase of larva instar and increases with the increase of spore concentration.The resistance of mature larvae on microsporozoites is relatively strong.