[1]Key Laboratory of Plant Nutrition and Fertilizer;
Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning;
Chinese Academy of Agricultural Sciences;
Beijing 100081;
P.R.China;
[2]College of Resources and Environmental Sciences;
China Agricultural University;
Beijing 100193;
P.R.China;
[3]China Blue Chemical Ltd.;
Beijing 100029;
P.R.China;
氮素利用效率; 水稻产量; 粮食产量; 生产区; 氮肥利用率; 国家粮食安全; Oryza; 氮收获指数;