土壤-植物系统中磷对重金属生物有效性的影响机制

Mechanism of the effect of phosphorus on bioavailability of heavy metals in soil-plant systems

磷对植物吸收重金属元素的影响作用属于植物营养和重金属污染生态研究的前沿。污染土壤中施入磷是否能够降低重金属离子的生物有效性 ,除了与重金属离子本身特性有关外 ,还与含磷化合物的性质及土壤环境条件有关。在分析中 ,就土壤中磷与重金属离子间交互作用机制、土壤中影响磷降低重金属离子生物有效性的环境因子及磷与重金属交互作用的国内外研究进展作了简要综述 ,并对今后的研究提出了展望。

The characteristics of phosphorus on the bioavailability of heavy metals in soil_plant system are new aspects of plant nutriology and pollution ecology. Whether application of P compounds to soils can reduce the bioavailability of heavy metals depends on the nature of P compound, soil type and metal species. The mechanisms of the interactions between P and heavy metals, the factors affecting the interactions and some development of the research were introduced in this paper. Some further study of the interactions was stressed.