棉铃虫幼虫的活动规律及其防治时机探讨
Behavior of Helicorerpa armgera larvae related with pest control
苏 静1；魏新田2*；魏修山2
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作者单位：1 河南省镇平县植保植检站 镇平 474250;2河南省镇平县农技推广中心 镇平 474250
中文关键词：抗性棉铃虫， 喷药时间选择， 防效
英文关键词：the resistant cotton bollworm, spraying time, control effect
中文摘要：针对所谓抗性棉铃虫防治不易问题，通过观察、试验发现与喷药防治时间选择有关。提出在傍晚露水下来后喷药最佳，比中午高温时喷药及日落后喷药防效分别提高87%及75.9%。
英文摘要：In an attempt to better control the resistant cotton bollworm, the behaviro of Helicoverpa armgera Hübner larvae was studied. The result showed that the control effect was related to the spraying time. It was best to spray at dusk when it began to dew, which would improve the control effect 87% and 75.9% than at noon and at sunset, respectively.