化肥施用对土壤中重金属生物有效性的影响研究

Effects of application of chemical fertilizers on bioavailability of heavy metals in soil

本研究综述了化学肥料施用对土壤中重金属生物有效性的影响,土壤施肥能改变土壤理化性质如pH、溶液中的离子组成、阳离子交换量等,或直接与重金属离子发生反应,影响重金属的生物有效性。故施用化肥时要考虑到所施化肥的种类和施用量可能会导致重金属的植物可利用性发生改变,从而对人体健康产生影响。

The availability of heavy metals to plants is one of the topics in the study of environmental science. This paper by using the recent achievements, presents an overview on effects of chemical fertilizers on availability of heavy metals. Fertilizers can alter soil properties such as pH, ionic constituents in solution and CEC or can directly react with heavy metal ions. All these effects would change the forms of heavy metals in soil and the absorbing process of plants. Therefore, when applying fertilizers to soil, their types and their rates should be considered, especially for heavy metal-contaminated soils.