杨树食叶害虫的特征及防治措施
Xinjiang Agricultural Science and Technology(2012)
Abstract
<正>由于气候干燥异常,哈密地区树种较为单一,以杨树为主栽树种。杨树食叶害虫春尺蠖、杨二尾舟蛾、天幕毛虫等常常在杨树纯林中大面积发生,同时也危害沙枣、榆、柳、桑等,幼虫取食嫩芽、叶片和花蕾,特别是尺蛾、舟蛾类食叶害虫极有可能爆发成灾,往往在短短几天内将树叶吃光,严重影响树木的生长。现将杨树食叶害虫的特征及防治方法介绍如下。1形态特征1.1春尺蠖成虫:性二型,雌虫触角丝状,无翅;雄虫触角羽毛状,体长10~15mm,翅展28~37mm。卵:长圆形,有珍珠光泽,卵壳上有整齐刻纹,
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