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棉大卷叶螟Notarcha derogate(Fabricius)在鄢陵县1 a发生4代,第3、4代发生最为严重,以老熟幼虫越冬。幼虫卷叶呈筒状,蚕食叶片。世代重叠。在成虫羽化期,采用黑光灯诱杀成虫;在幼虫初期,喷洒25%灭幼脲Ⅲ号2 500倍、50%杀螟松乳油1 500倍、1.8%阿维菌素乳油4 000倍、10%氯氰菊酯乳油6 000倍液,防治效果好。
Notarcha derogate (Fabricius) occurs 4 generations in Yanling County 1 a. The third and fourth generations occur most seriously, and overwintering mature larvae. Larvae roll leaves were tubular, eroded leaves. Generational overlap. In the eclosion stage of adults, the adults were trapped and killed with black light; in the early larvae, 25% diflubenzuron III was sprayed 2,500 times, 50% fenitrothion EC 1 500 times, 1.8% abamectin EC 4000 times and 10% Cypermethrin EC 6000 times, good control effect.