松突圆蚧数量、环境因子及马尾松受危害程度三者间的相关性分析
송돌원개수량、배경인자급마미송수위해정도삼자간적상관성분석
Correlation analysis of population size of Hemiberlesia pitysophila (Homoptera: Diaspididae),environmental factors and the hazard degree of masson pine
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