棉田亚洲玉米螟自然种群发生趋势的研究  

Studies on the Natural Population Occurrence Tendency of Asiatic Corn Borer in the Cotton Field

作　　者：杨益众[1,2] 戴志一[1,2] 黄东林 王春安[1,2] 

机构地区：[1]扬州大学农学院植物保护系 [2]江苏省姜堰市植保站

出　　处：《江苏农业学报》1997年第1期27-31,共5页Jiangsu Journal of Agricultural Sciences

基　　金：本研究系江苏省"八五"攻关课题资助项目

摘　　要：通过田间调查和室内辅助试验，组建了棉田亚洲玉米螟的二、三代自然种群生命表。结果表明，棉田亚洲玉米螟二代存活率仅为０．５％～３．５％；三代存活率仅１．０％左右。从种群存活曲线分析得出，影响种群增长的关键虫期为卵至１、２龄幼虫期；风雨导致初孵幼虫死亡及天敌寄生。Based on field investigation and some other auxiliary experiments,the natural population life tables of Asiatic corn borer Ostrinia furnacalis during the 2nd and 3rd generations in the cotton field were established.The survival rate was only 0 5%-3 5% on the whole 2nd generation and 1% on the 3rd generation,respectively.The survival curve indicated that the population decrease uses mainly from egg to lst and 2nd instar.The rainfall during the lst and 2nd instar and parasitic enemies were main factors that affected on population dynamics of O.furnacalis.

关 键 词：玉米螟 棉花 种群生命表 

分 类 号：S435.622.9[农业科学—农业昆虫与害虫防治]