摘要
查明麦田害虫天敌有９８种，其中捕食性天敌８０种，寄生性天敌１８种。对天敌种群动态作了系统观察，分析了影响天敌种群数量的环境因素。对大灰食蚜蝇、黑带食蚜蝇、七星瓢虫捕食麦蚜效能进行了探讨。
According to our investigations in the wheat fields of Heze Prefecture,there are98 species of natural enemies, of which 80 species are predatory and 18 species are parasitic.Population dynamics of the natural enemies was systematically observed and environmentfactors affecting population of the natural enemies were analysed.Predatory functions ofSyrphus corollae Fabricius,Epistrophe balteata De Geer and Coccinella seplempunctata Linnaeus to wheat aphids were also probed.
出处
《华东昆虫学报》
1995年第1期56-60,共5页
Entomological Journal of East China
关键词
麦田
天敌
种群动态
麦蚜
捕食效能
wheat field,natural enemy,population dynamics,Macrosiphum granarium Kirby,Dredatory function.
