Types of phosphorus fertilizers and their influences on cadmium and phosphorus interactions in soil-plant systems

The interactions between phosphate fertilizers in agricultural production and cadmium in soil affect the bioavailability of cadmium in soils, causing changes in the movement and transformation of cadmium in soil-plant systems.In recent years, feasibility study concerning cadmium availability in soils and cadmium uptake by plants regulated by phosphorus fertilizers has been a research hotspot.This paper reviewed the recent researches about the regulation effects of phosphate fertilizers on cadmium availability in soils and cadmium uptake by plants, as well as the regulation mechanisms by comparing the changes of cadmium forms before and after the application of phosphorus fertilizers.The effects of phosphate fertilizers on soil cadmium availability and cadmium uptake by plants were influenced by phosphorus fertilizer type, application level and soil type.However, the differences in phosphate fertilizer properties and the changes in soil physical-chemical properties were the main reasons for the regulation effects of soil cadmium.Future studies should focus on the interactions of field trials between phosphorus fertilizers and cadmium in soil-plant system.In addition, more studies should emphasize on the risk of phosphorus leaching and the regulation mechanisms of soil cadmium with the application of phosphate fertilizers.