湖北省汉江中游黏虫成虫种群动态监测与分析

2014-2016年在湖北省宜城市利用糖醋液、佳多频振式杀虫灯调查了黏虫(Mythimna separata)成虫种群的发生动态。根据调查结果推测湖北省境内汉江中游流域均可能为黏虫常年越冬地,蛹及成虫均可越冬,为1代黏虫多发区;越冬代成虫在3月中下旬出现峰值,4月为1代黏虫幼虫期,幼虫大量发生,主要为害小麦,5月中下旬至6月中上旬为1代黏虫成虫高峰期,此后在7月上中旬成虫可能会有个小峰值,但8月之后基本不再出现成虫峰值。

Survey and Analysis of the Population Dynamic of Mythimna separata Adults in the Middle Reaches of Hanjiang River in Hubei Province

The population dynamic of Mythimna separata adults was surveyed during 2014-2016 in Yicheng of Hubei using sugar mixing vinegar liquids and Jiaduo frequency-trembler-destroy-pests lamps. It was concluded that the middle reaches of Hanjiang River in Hubei were probably perennial overwintering grounds for Mythimna separata,the pupae and adults of this species was available to overwinter,and where were most at risk of the first generation. The peak of overwintering adults oc-curred during the mid-late March. The peak of larvae population of the first generation occurred during the April,which mainly damaged wheat,and the occurrence amount of the first generation was maximum. The peak of the first generation adults occurred during the mid-late May to early-mid June, and another small peak occurred during early-mid July,however no peak of adults occurred after August.