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应用生态学报 ›› 1997, Vol. 8 ›› Issue (5): 495-499.

• 研究论文 • 上一篇    下一篇

华东稻麦轮作生态系统的N2O排放研究

郑循华1, 王明星1, 王跃思1, 沈壬兴1, 龚晏邦1, 张文1, 骆冬梅1, 金继生2, 李老土2   

  1. 1. 中国科学院大气物理研究所,北京 100029;
    2. 江苏省吴县市农业科学研究所,苏州 210128
  • 收稿日期:1995-03-28 修回日期:1996-04-02 出版日期:1997-09-25 发布日期:1997-09-25
  • 基金资助:

    国家自然科学基金(49675270);中国科学院大气物理研究所边界层物理与大气化学国家重点实验室基金;中德合作项目

N2O emission from rice wheat ecosystem in Southeast China

Zheng Xunhua1, Wang Mingxing1, Wang Yuesi1, Shen Renxing1, Gong Yanbang1, Zhang Wen1, Luo Dongmei1   

  1. Institute of Atmospheric Physics, Academia Sinica, Beijing 100029
  • Received:1995-03-28 Revised:1996-04-02 Online:1997-09-25 Published:1997-09-25

摘要: 根据对华东稻麦轮作周期的N2O排放及其影响因子的连续观测结果,分析了N2O排放时间变化以及施肥、灌溉、温度、土壤湿度和土壤速效N素含量对N2O排放的影响,同时还比较分析了稻田N2O和CH4排放.研究结果表明,稻麦轮作周期内,水稻生长季的N2O排放量仅占30%,稻田持续淹水可比常规灌溉增加CH4排放量26%,减少N2O排放量11~26%.

关键词: N2O排放, 时间变化, 控制因子, CH4排放, 稻麦轮作系统, 年龄结构, 野核桃, 生长, 坡向, 幼苗

Abstract: Based on the observations on N2O emission from rice-wheat rotation systems in Southeast China,its temporal variation and the effects of fertilization,irrigation,temperature,and soil moisture and available Ncontents on it are discussed. Meanwhile,the difference of CH4 and N2O emissions from rice season is analysed. The results show that the amount of N2O emitted from rice season only accounts for about 30% of the whole rotation cycle.The CH4 emission increases 26% by keeping flooding in rice season,and N2O emission from rice-wheat rotation cycle reduces 13~26%,comparing to normal irrigation.

Key words: N2O emission, Temporal variation, Regulating factor, CH4 emission, Rice wheat rotation system, seedling, age structure, slope aspect, Juglans cathayensis, growth