土壤镉、铅、锌污染的植物效应研究进展

Research advance in effects of cadmium, lead and zinc on plants in soils contaminated with these metals

综述了土壤Cd、Pb、Zn污染对植物产生影响的主要特征、复合效应及其效应机理的研究进展。土壤Cd、Pb、Zn含量超过一定限度对不同植物产生一定危害 ,主要表现为使植物褪绿、矮化、物候期延迟、生物产量降低 ,甚至死亡 ,直接影响农产品的产量和品质 ,过量的重金属含量可降低作物的质量。总结了一般土壤重金属Cd、Pb、Zn在植物体中富集的规律 。

It is concluded that the characteristics of effects of cadmium, lead and zinc on plants in the contaminated soils. The interaction and principles of the effects are summarized respectively, as well. Plants shall be damaged with Cd?Pb?Zn in soils while contents of these metals exceed the critical values. The primary characteristics of the damages plants are that: degraded the green color the plants, undersized height of the plants, postponed the times of the growth, decreased the bio production, and died of the serious damages plants. Simultaneously, quality of the plants is reduced. It is summarized that the principles of accumulation with heavy metals in tested plants. The basis is offered for cultivation of non harmful crops.