棉铃虫世代种群的发展变化  

The Development Changes of Generation Population of Cotton Bollworm

作　　者：刘孝纯[1] 邱峰[1] 郭小奇林松 

机构地区：[1]河南省农业科学院植物保护研究所,河南郑州450002

出　　处：《河南农业科学》2004年第10期33-36,共4页Journal of Henan Agricultural Sciences

基　　金：国家"八五"应急攻关计划 (85 - 0 2 1- 0 1- 0 1)

摘　　要：对棉铃虫种群动态的多年研究证明 ,棉铃虫年发生世代从 3.3代增加到 4.5代 ,年平均百株累计卵量增加了 4倍。主害代明显后延多发 ,完全 5代出现率已达 2 2 % ,大发生频率巨增。The studies on population dynamic of Helicoverpa armigera Hubner in many years showed that the mean annual generetions has gone up from 3.3 to 4.5 and ovipositing amount on 100 cotton plants incrsased by 400%.Main injurious generations were obvious succeeding and occurring frequently and the arising rate of complete-five-generations had reached 22%,frequency of large-occurring rose greatly.

关 键 词：棉铃虫 世代种群 症状 发生频率 

分 类 号：S435.622.3[农业科学—农业昆虫与害虫防治]