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The population density shows a positive correlation to the blackening degree of the needle.
松针红蜡蚧虫口密度与针叶变黑呈正相关,受害木的材积生长率受到较大影响。
youdao
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The population density shows a positive correlation to the blackening degree of the needle.
松针红蜡蚧虫口密度与针叶变黑呈正相关,受害木的材积生长率受到较大影响。
youdao