2005年褐飞虱大发生原因及防治启迪

Plant Protection(2006)

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Abstract
2005年是安徽省继1997年以来又一个褐飞虱特大发生年.其发生特点是:迁入峰期偏早,发生时间长,短翅型成虫始见早,田间虫量高,尤其是单、双晚后期,世代重叠,发生范围广,中、晚稻大部分稻区均达大发生程度,防治不力田块,产量损失严重.
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