受虫口基数大、气候条件适宜、幼虫发生盛期与玉米苗期高度吻合等因素影响,今年我省二点委夜蛾呈大发生态势,对夏玉米生产构成严重威胁。我省各级政府和农业部门高度重视,见势早、行动快,全力推进防控措施落实,有效遏制重发危害的势头。截至目前,全省发生面积约500万亩,发生田块百株虫量一般2—10头,被害株 Affected by a large population of insect population, suitable climatic conditions, the occurrence of larvae peak height and maize seedling height and other factors, this year, two large-scale occurrence of southern province was a significant threat to the development of summer maize crop posed a serious threat. The governments at all levels in our province and the agricultural sector attach great importance to seeing the situation as early as possible and quick action, pushing forward the implementation of prevention and control measures to effectively curb the momentum of the resumption of the harm. Up to now, the province occurred an area of ​​about 5000000 acres, the number of fields occurred generally 100 insects 2-10 head, killed