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IMPACT OF NATURAL ENEMIES ON RUSSIAN WHEAT APHID IN XINJIANG UYGUR AUTONOMOUS REGION
Author(s): 
Pages: 86-91
Year: Issue:  S1
Journal: Acta Entomologica Sinica

Keyword:  麦双尾蚜 天敌 控制效果 新疆;
Abstract: 在新疆塔城和哈密春麦田, 用笼罩法研究的结果表明, 7 月份天敌因素对麦双尾蚜Diuraphisnoxia (Mordvilko) 自然种群具有明显的控制作用。在试验观察期间, 当部分自然种群出现负增长时, 笼罩的麦双尾蚜增长了4-4~8-3 倍。塔城春麦田天敌数量变化和麦双尾蚜增长率的相关性分析表明, 1994 年蚜小蜂Aphelinus albipodus 和斑腹蝇Leucopis annulipes 等天敌的控制能力明显,1996 年捕食性的蜘蛛类、瓢虫类天敌作用较强。不同年份天敌优势种类和数量存在明显差异。
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