二点委夜蛾是为害玉米的一种新害虫,今年在临沂枣庄、济宁等地夏玉米田发生严重。山东省植保总站近期组织专家对枣庄、临沂发生情况进行实地调查,初步统计全省已发生300余万亩,部分地块已造成毁种。据调查,发生田玉米虫株率20%以上,严重地块可达30%～50%,个别地块达90%以上甚至毁种。平均有虫3～4头/株,高的达到8～9头/株。 Two members of the night of the moth is a new pest damage to corn this year in Linyi Zaozhuang, Jining and other places summer corn fields serious. Shandong Provincial Plant Protection Station recently organized experts on Zaozhuang, Linyi field investigation conducted a preliminary survey of the province has occurred more than 300 million mu, some of the land has been destroyed. According to the survey, the occurrence rate of field corn and insect pests more than 20%, a serious block up to 30% to 50%, individual plots of more than 90% or even destroyed. An average of 3 to 4 worms / strain, high reached 8 to 9 heads / strain.