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14d
草莓上那神秘白色絮状物,是白粉病还是灰霉病?看完这些准没错!
最近,不少果农朋友们反映,草莓果实表面竟然出现了一些奇怪的白色絮状霉斑,这是草莓白粉病的典型特征哦!这病从草莓苗期到结果期都会出现,对叶子、花朵和果实都能造成损害,传播速度也是非常快,从萌芽到侵犯仅需要20到24小时。真让人头疼! 接下来,我们来聊聊白粉病的症状和特性,尤其是很多朋友容易把它和灰霉病搞混。初期时,病害会让叶片背面出现白色粉状物,病情加重后,叶片上会出现不同大小的暗色斑点,最后可能覆 ...
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