2016年-2019年河南信阳黏虫的种群动态及虫源性质分析

Population dynamics and characteristics of armyworms in Xinyang,Henan province,during 2016-2019

为了解河南信阳黏虫的发生情况,本研究利用高空探照灯对2016年-2019年黏虫成虫的种群动态进行了监测及分析。结果表明,2016年-2019年在河南信阳监测的黏虫成虫主要为东方黏虫(又称为黏虫)和劳氏黏虫,均一年发生5代,整个监测期间均出现多个高峰期。其中,东方黏虫以一代为主,占全年总诱虫量的54.62%~82.96%,并且大部分虫源向外迁出,少部分留在本地;劳氏黏虫以三代或四代为主,以留在本地或迁入为主,只有少数向外迁出。本研究为河南省信阳地区黏虫的预测预报和防控提供了参考。

To understand the population dynamics of armyworm in Xinyang,Henan province,the population dynamics of adults from 2016 to 2019 was systematically monitored using high-altitude searchlight.Two armyworms monitored were Mythimna separata(also called armyworm)and M.loreyi.Each of these two species occurred five generations per year,and there were many peaks during the whole monitoring period.The first generation of M.separata was dominant,accounting for 54.62%-82.96%of the total number,and most of this generation was emigration.The third or fourth generation of M.loreyi was dominant,and most of this generation was local or immigration.This study provides a reference for prediction and control of armyworm in Xinyang,Henan province.