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| 土壤水分状况和氮肥施用及品种对稻田N2O排放的影响 | |
| 引用本文： | 徐华,邢光熹,蔡祖聪,鹤田治雄. 土壤水分状况和氮肥施用及品种对稻田N2O排放的影响[J]. 生态学杂志, 1999, 10(2): 186-188 |
| 作者姓名： | 徐华 邢光熹 蔡祖聪 鹤田治雄 |
| 作者单位： | 1. 中国科学院南京土壤研究所土壤圈物质循环开放研究实验室, 南京 210008;2. 日本国立农业环境技术研究所, 筑波 305 |
| 基金项目： | 国家自然科学基金(48970039)和中国科学院南京土壤研究所土壤圈物质循环开放实验室资助项目. |
| 摘 要： | 土壤水分状况和氮肥施用及品种对稻田N2O排放有明显影响。当稻田持续淹水时,几乎没有N2O排放,而当稻田经历干湿交替循环特别是烤田时,有较高的N2O排放通量。稻田持续淹水、干湿交替及烤田期间5个处理的平均N2O排放通量分别为1.02、23.87和47.99μg·m-2·h-1.化学氮肥的施用增加了稻田N2O的排放量,且硫铵能比尿素排放更多的N2O.施用硫铵氮100和300kg·hm-2引起的N2ON损失率分别为0.04%和0.26%,而施用尿素氮的分别为0.03%和0.15%. |
| 关 键 词： | 稻田 N2O 排放通量 水分状况 氮肥品种 |
| 收稿时间： | 1997-04-21 |
Effect of soil water regime and chemical N fertilizers application on N2O emission from paddy field |
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| Xu Hua,Xing Guangxi,Cai Zucong,H.Tsuruta. Effect of soil water regime and chemical N fertilizers application on N2O emission from paddy field[J]. Chinese Journal of Ecology, 1999, 10(2): 186-188 | |
| Authors: | Xu Hua Xing Guangxi Cai Zucong H.Tsuruta |
| Affiliation: | 1. Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, Academia Sinica, Nanjing 210008;2. National Institute of Agro-Environmental Sciences, Tsukuba 305, Japan |
| Abstract: | The mean N2O emission from paddy field under continuously flooding, alternately flooding and soil draining, and drying was 1.02, 23.87 and 47.99μg·m-2·h-1,respectively. Application of chemical N fertilizers could increase N2O emission, and ammonium sulphate seemed to emit more N2O than urea. The fertilizer induced N2O Nloss from ammonium sulfate was 0.04% at the application rate of 100kg·hm-2, and 0.26% at the rate of 300kg·hm-2. The corresponding loss was 0.03% and 0.15% from urea. |
| Keywords: | Paddy field Nitrous oxide Flux Water regime N fertilizer forms |
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