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应用生态学报 ›› 1999, Vol. 10 ›› Issue (2): 186-188.

• 研究论文 • 上一篇    下一篇

土壤水分状况和氮肥施用及品种对稻田N2O排放的影响

徐华1, 邢光熹1, 蔡祖聪1, 鹤田治雄2   

  1. 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
  • 收稿日期:1997-04-21 修回日期:1997-12-18 出版日期:1999-03-25 发布日期:1999-03-25
  • 通讯作者: 徐华,男,33岁,博士生,助理研究员,主要从事农田土壤温室气体排放研究,发表学术论文20余篇.
  • 基金资助:

    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.

Effect of soil water regime and chemical N fertilizers application on N2O emission from paddy field

Xu Hua1, Xing Guangxi1, Cai Zucong1, H.Tsuruta2   

  1. 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
  • Received:1997-04-21 Revised:1997-12-18 Online:1999-03-25 Published:1999-03-25

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, 细菌群落, 氮沉降, 高通量测序, Lefse分析

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.

Key words: Paddy field, Nitrous oxide, Flux, Water regime, N fertilizer forms, high-throughput sequencing, bacterial community, nitrogen deposition, Lefse analysis