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食物充足条件下卫生状况介导小菜蛾(Plutella xylostella ...
在十字花科作物种植区,小菜蛾(Plutella xylostella)是造成全球年损失40-50亿美元的重大害虫。 田间常出现幼虫高密度聚集现象,传统理论认为食物短缺是密度制约生长的主要因素。
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