摘要
The effects of different amounts and kinds of nitrogen fertilizer on rice yield and its nitrogen uptake and utilization were studied on a main paddy soil (Wushan soil) of Taihu area. The results indicated that the optimal amount of nitrogen fertilizer was about 180 kg N·hm -2 for rice production. Applying ammonium sulfate was better than applying urea for increasing rice yield. The efficiency of nitrogen fertilizer in this experiment was about 41.8～48.5%, and its loss was 22.8～38.1% .
The effects of different amounts and kinds of nitrogen fertilizer on rice yield and its nitrogen uptake and utilization were studied on a main paddy soil (Wushan soil) of Taihu area. The results indicated that the optimal amount of nitrogen fertilizer was about 180 kg N·hm -2 for rice production. Applying ammonium sulfate was better than applying urea for increasing rice yield. The efficiency of nitrogen fertilizer in this experiment was about 41.8～48.5%, and its loss was 22.8～38.1% .
出处
《应用生态学报》
CAS
CSCD
2003年第11期2081-2083,共3页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展规划项目(G19990 1180 2 )
中国科学院知识创新工程项目(KZCX2 413 3)
国家自然科学基金重大资助项目(3 0 3 90 0 80 )
关键词
太湖地区
稻田
氮肥
吸收
利用
Rice, Nitrogen fertilizer, Nitrogen utilization efficiency
