1959年5月底,在保定专区农学院农场小麦田中发现第一代玉米螟大量集聚为害,作者于6月4日起进行观察。 成虫在麦黄熟期大量飞集,以稠密倒伏麦田内密度最大,稍受惊扰即四下飞舞,但飞翔不远立即落下钻入麦稞稠密的隐蔽部分,白天不活动,夜间8—9时大 By the end of May 1959, the first generation of Ostrinia furnacalis was found to have been agglomerated for a long time in the farm wheat field of Agronomy College of Baoding. The author started the observation on June 4. During the ripe stage of wheat, the adults flew in large numbers to densely invade the fields with the largest density and were disturbed by the noise. However, they flew immediately and fell into the dense hidden parts of the poplar trees. They were not active during the daytime and were large at 8-9 o’clock at night