A survey of literature shows that little study has been done on uptake of pollutants by plants from the polygonaceae , and that the reports about their physiological and biochemical characteristics under heavy metal stress were sporadically seen . a batch of sand culture and soil culture experiments were carried out to investigate heavy metal and radiocesium uptak e and accumulation by rumex acetosa linn , polygonum microcephalum d . don , and rumex hastatus d . don widely distributed on copper mining areas , and their physiological and biochemical characteristics under cu zn stress , as well their potentials in application to phytoremediation 本论文以广泛生长于铜矿区的蓼科植物酸模、小头蓼和戟叶酸模为试验材料，运用砂培、土培等方法，研究它们对重金属( cu 、 zn )以及放射性核素( ~ ( 134 ) cs )的吸收和积累特性以及cu 、 zn胁迫条件下它们的生理生化特征，初步探讨它们在无机污染物污染土壤植物修复中的应用潜力。
Although the combined treatments with both cu and zn decreased growth biomass compared with single cu and single zn treatments , they can also grow well in the combined polluted environment and accumulate certain amount of cu and zn . under combined contamination , cu and zn showed obvious mutual interactions : zn treatment decreased cu uptake by r . acetosa and r . hastatus , and cu treatment depressed zn uptake by r . acetosa and 复合污染条件下，植物吸收cu 、 zn过程中cu 、 zn之间交互作用明显，酸模对cu 、 zn的吸收表现为相互抑制，戟叶酸模器官中cu 、 zn含量分别比单独染cu 、单独染zn时低，染cu抑制戟叶酸模对zn的吸收，染zn抑制戟叶酸模对cu的吸收。
