[1]Key Laboratory of Nonpoint Source Pollution Control;
Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning;
Chinese Academy of Agricultural Sciences;
Beijing 100081;
P.R. China;
[2]Department of Plant Science;
Pennsylvania State University;
University Park;
PA 16802;
USA;
[3]Institute of Plant Nutrition and Resources;
Beijing Academy of Agriculture and Forestry Sciences;
Beijing 100097;
P.R.China;
[4]Institute of Agro-Environmental Protection;
Ministry of Agriculture;
Tianjin 300191;
P.R. China;
磷素流失; 稻麦轮作系统; 降雨量; 水体富营养化; 径流流失; 生长季节; 施肥; 种植系统;