Ammonia volatilization and nitrogen utilization efficiency in response to urea application in rice fields of the Taihu Lake region, China
文献类型：期刊论文
| 作者 | Lin De-Xi; Fan Xiao-Hui; Hu Feng; Zhao Hong-Tao; Luo Jia-Fa |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2007-10-01 |
| 卷号 | 17期号:5页码:639-645 |
| 关键词 | ammonia volatilization N application rate N utilization efficiency paddy soil rice yield |
| ISSN号 | 1002-0160 |
| 通讯作者 | Fan Xiao-Hui(xhfan@issas.ac.cn) |
| 英文摘要 | Ammonia volatilization losses, nitrogen utilization efficiency, and rice yields in response to urea application to a rice field were investigated in Wangzhuang Town, Changshu City, Jiangsu Province, China. The N fertilizer treatments, applied in triplicate, were 0 (control), 100, 200, 300, or 350 kg N ha(-1). After urea was applied to the surface water, a continuous airflow enclosure method was used to measure ammonia volatilization in the paddy field. Total N losses through ammonia volatilization generally increased with the N application rate, and the two higher N application rates (300 and 350 kg N ha(-1)) showed a higher ratio of N lost through ammonia volatilization to applied N. Total ammonia loss by ammonia volatilization during the entire rice growth stage ranged from 9.0% to 16.7% of the applied N. Increasing the application rate generally decreased the ratio of N in the seed to N in the plant. For all N treatments, the nitrogen fertilizer utilization efficiency ranged from 30.9% to 45.9%. Surplus N with the highest N rate resulted in lodging of rice plants, a decreased rate of nitrogen fertilizer utilization, and reduced rice yields. Calculated from this experiment, the most economical N fertilizer application rate was 227 kg ha(-1) for the type of paddy soil in the Taihu Lake region. However, recommending an appropriate N fertilizer application rate such that the plant growth is enhanced and ammonia loss is reduced could improve the N utilization efficiency of rice. |
| 收录类别 | SCI |
| WOS关键词 | FLOODED RICE |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000249943600012 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558708 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Fan Xiao-Hui |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Univ Florida, Ctr Trop Res & Educ, Inst Food & Agr Sci, Dept Soil & Water Sci, Homestead, FL 33031 USA 3.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Peoples R China 4.Fujian Agr & Forestry Univ, Coll Resources & Environm Sci, Fuzhou 350007, Peoples R China 5.Ruakura Agr Res Ctr, Land Environm Management Grp, Hamilton, New Zealand |
| 推荐引用方式 GB/T 7714 | Lin De-Xi,Fan Xiao-Hui,Hu Feng,et al. Ammonia volatilization and nitrogen utilization efficiency in response to urea application in rice fields of the Taihu Lake region, China[J]. PEDOSPHERE,2007,17(5):639-645. |
| APA | Lin De-Xi,Fan Xiao-Hui,Hu Feng,Zhao Hong-Tao,&Luo Jia-Fa.(2007).Ammonia volatilization and nitrogen utilization efficiency in response to urea application in rice fields of the Taihu Lake region, China.PEDOSPHERE,17(5),639-645. |
| MLA | Lin De-Xi,et al."Ammonia volatilization and nitrogen utilization efficiency in response to urea application in rice fields of the Taihu Lake region, China".PEDOSPHERE 17.5(2007):639-645. |
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来源：南京土壤研究所
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