Ivela ochropoda is one of the main defoliator pest occurred in Ulmus pumila, and is very serious in Wuqi County.
摘要榆毒蛾是榆树的食叶害虫之一，在
发生严重。
Ivela ochropoda is one of the main defoliator pest occurred in Ulmus pumila, and is very serious in Wuqi County.
摘要榆毒蛾是榆树的食叶害虫之一，在发生严重。
8.The results showed: 1) there are in evidence the land vegetation of warm temperate zone in \%Ulmus lamellose \%communities and the property of the north temperate zone in the flora;
结果
明 :1)脱皮榆群落
有
温带地带性植被的特点 ,区系成分有北温带性质。
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