Song Yongsheng, Fan Xiaohui
Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
Ying Yong Sheng Tai Xue Bao. 2003 Nov;14(11):2081-3.
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%.
在太湖地区主要水稻土（乌山土）上研究了不同数量和种类的氮肥对水稻产量及其氮素吸收利用的影响。结果表明，水稻生产的最佳氮肥用量约为180 kg N·hm-2。施用硫酸铵比施用尿素更有利于提高水稻产量。本试验中氮肥效率约为41.8 - 48.5%，损失率为22.8 - 38.1%。
