当地甜玉米正是抽雄开花期，受虫害影响较大，严重影响玉米生长，科技人员经详细调查发现，20%-30%玉米植株已受到害虫危害，主要害虫为草地贪夜蛾。针对这一虫害情况，石达金副研究员提出，草地贪夜蛾幼虫取食玉米心叶，留有大量孔，其后转移危害，一经发现要及时进行科学防治，防治要抓住低龄幼虫的防控最佳时期，注意喷洒在玉米心叶、雄穗等部位；在卵孵化初期选择喷施白僵菌、绿僵菌、苏云金杆菌制剂及多杀菌素、苦参碱、印楝素等生物农药；玉米田虫口密度达到10头/百株时，可选用防控夜蛾科害虫的高效低毒的杀虫剂喷雾防治，如氯虫苯甲酰胺、氟氯氰菊酯、溴氰虫酰胺等，成虫发生期，可集中连片使用杀虫灯诱杀，可搭配性诱剂和食诱剂提升防治效果。
在现场，科技人员采用无人机喷药方式对害虫进行现场防治。期间，农户对如何辨别玉米虫害、农药喷施注意事项、无人机喷药流程等问题进行了询问，科技人员对此进行了详细解答。
玉米所 吕巨智供稿/覃永嫒供图 时成俏审核
责任编辑：薛臣艺
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