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li mu shi de shi bie yu fang zhi
Author(s): 
Pages: 24
Year: Issue:  10
Journal: Agricultural Knowledge

Abstract:  中国梨木虱属同翅目,木虱科,是梨生产中的主要害虫之一,主要以成虫和若虫刺吸芽,叶及嫩梢的汁液危害.若虫能分泌大量蜜露,滋生黑霉菌而污染叶片和果实,常使叶片枯连在一起而影响正常的光合作用.危害严重时常导致落叶,使梨树出现二次萌芽和开花现象,造成树势早衰,严重影响产量和果实品质.现将梨木虱的形态特征与防治方法介绍如下.
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