馆陶县二点委夜蛾发生为害特点及防治措施  

Detrimental Characteristics and Controlling Measurements of Athetis lepigonein Guantao County

作　　者：马建英 郝延堂 周霄 陈立涛 张大鹏 张龙 

机构地区：[1]馆陶县植保站,河北馆陶057750 [2]河北省植保植检站,河北石家庄050011

出　　处：《河北农业科学》2012年第12期18-20,27,共4页Journal of Hebei Agricultural Sciences

基　　金：河北省科技厅项目(11220301D)

摘　　要：二点委夜蛾是近年来馆陶县夏玉米区新发生的一种害虫。由于对其认识不足,错过了防治适期,使得为害面积进一步扩大,为害程度进一步加重。为了摸清二点委夜蛾在馆陶县的发生规律,降低其为害程度,作者通过对二点委夜蛾的田间调查及监测数据,详细阐述了二点委夜蛾在馆陶县的发生为害特点、发生代数和越冬情况等。结果表明:二点委夜蛾在馆陶县小麦-玉米连作区1 a发生4代,主要为害3～6叶期的玉米。该虫主要以作茧后的老熟幼虫在当地越冬,越冬地点为枯黄的花生秧和大豆秧下以及杂草枯叶下。根据二点委夜蛾的发生特点,分别从农业防治和化学防治2个方面制定了针对性防治措施。A. lepigone was a new summer corn field pest in Guantao County. Lack of related knowledge lost the proper control time, and it leaded to the expansion of occurrence range, the damage was more serious. To explore the regularity of outbreak of A. lepigone in Guantao County and reduce the damage range, the detrimental characteristics, generations, overwintering ways of A. lepigone were clarified in detail by field investigating and monitoring. The results showed that there were 4 generations in wheat-corn fields in a year and it was mainly harmful for 3 -6 leaf-stage corn. It overwintered mainly with earth-cocooned mature larvae under the withered peanut, soybean and the dead leaves of weeds in the locality. According to the characteristics of A. lepigone, the measurements of agricultural control and chemical control were planed to control its detriment.

关 键 词：二点委夜蛾 形态特征 发生为害特点 防治措施 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治]