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dong ji fang zhi guo shu bing chong hai ji shu
Author(s): 
Pages: 46
Year: Issue:  1
Journal: Deciduous Fruits

Abstract:  冬季,危害果树的许多病害都以"菌丝"、"菌核"形式进入越冬状态;危害果树的许多害虫逐渐处于休眠状态.此时,抓紧果树病虫害的防治能有效减轻翌年病虫害的发生.
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