In this period P loss occupied 60%of total loss in a year. (3) Factors affecting the temporal distribution are rainfall and farming activities (plowing， weeding , fertilizing, planting ).
In this period P loss occupied 60%of total loss in a year. (3) Factors affecting the temporal distribution are rainfall and farming activities (plowing， weeding , fertilizing, planting ).
（3）影响红壤坡地磷流失时间分布特征的因素主要为降雨和农事活动。