小麦田发生粘虫主要是幼虫食害小麦叶片,造成减产.最好在幼虫体长10毫米以下时(即3龄以前)进行防治,将其消灭在严重为害之前.虫口密度在每平方米20头以上应喷药防治,可采用的药剂有2.5%敌百虫粉、0.06%除虫精粉(2氯苯醚菊酯)或1.5%甲基1605粉,每亩用2公斤喷粉.也可用90%敌百虫或 The occurrence of the armyworm in the wheat field is mainly due to larvae infestation of the wheat leaves, which results in a decrease in production, preferably before the larvae are 10 mm in body length (ie, before the 3rd instar) and are destroyed before they are seriously damaged. The above should be spray control, the available agents are 2.5% trichlorfon powder, 0.06% decontamination powder (Permethrin) or 1.5% methyl 1605 powder, with 2 kg per mu dust. Also available 90% trichlorfon or