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POPULATION DYNAMICS OF THE RUSSIAN WHEAT APHID AND ITS NATURAL ENEMIES ON SPRING WHEAT AND WILD HOSTS
Author(s): 
Pages: 62-67
Year: Issue:  S1
Journal: Acta Entomologica Sinica

Keyword:  麦双尾蚜 天敌 春小麦 黑麦 野燕麦;
Abstract: 在塔城麦田调查发现, 麦双尾蚜Diuraphis noxia ( Mordvilko) 在春小麦和野生寄主上的百株蚜量从大到小依次为春小麦、黑麦和野燕麦, 在春小麦上最早出现高峰期。在春小麦上, 瓢虫类数量最多达到516 头/ 百株, 菜蚜茧蜂Diaeretiella rapae 和白足蚜小蜂Aphelinus albipodus 的最高寄生率分别达到31-6 % 和12-9% 。在黑麦上, 麦双尾蚜主要被白足蚜小蜂寄生, 最高寄生率达到42-9 % , 斑腹蝇幼虫Leucopisannulipes 最高达到16 头/ 百株。在野燕麦上, 白足蚜小蜂和菜蚜茧蜂最高寄生率分别达到62-3 % 和31-8 % 。瓢虫和菜蚜茧蜂发生较早, 白足蚜小蜂和斑腹蝇发生时间相对较晚。
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