我国土壤磷素水平处于上升过程 ,可能构成对水体环境的威胁。威胁主要在高产区和蔬菜种植区。讨论了土壤磷素在什么水平下可保护水体环境安全同时也满足作物高产需要。对已构成水体威胁地区 ,提出了可能的对策。 The level of soil phosphorus in our country is on the rise, which may pose a threat to the water environment. Threats are mainly in high-yielding areas and vegetable growing areas. It is discussed that at what level of soil phosphorus can protect the environmental safety of water body and meet the needs of high yield of crops. For those areas that have posed threat to water body, some possible countermeasures are put forward.