在农田生态系统中施用农药消灭害虫的同时往往会造成农药残留.对几种生物体内农药含量的测定结果如下表 生物种类 甲 乙 丙 丁 单位体积 Template




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tomski在农田生态系统中施用农药消灭害虫的同时往往会造成农药残留.对几种生物体内农药含量的测定结果如下表 生物种类 甲 coloring