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应用生态学报 ›› 1999, Vol. 10 ›› Issue (3): 329-331.

• 研究论文 • 上一篇    下一篇

土壤中反硝化酶活性变化与N2O排放的关系

史奕, 黄国宏   

  1. 中国科学院沈阳应用生态研究所, 沈阳 110015
  • 收稿日期:1998-07-14 修回日期:1998-12-26 出版日期:1999-05-25 发布日期:1999-05-25
  • 通讯作者: 史奕,女,38岁,副研究员,从事土壤-植物营养方面研究,在中外刊物发表论文10余篇.E-mail:syz@iae.syb.ac.cn E-mail:syz@iae.syb.ac.cn
  • 基金资助:

    中国科学院生物科学与技术特别支持项目

Relationship between soil denitrifying enzyme activities and N2O emission

Shi Yi, Huang Guohong   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1998-07-14 Revised:1998-12-26 Online:1999-05-25 Published:1999-05-25

摘要: 研究施肥条件下,土壤反硝化酶活性硝酸还原酶(NR)活性、亚硝酸还原酶(NiR)活性及羟胺还原酶(HyR)活性在玉米生长季节中的变化及其与土壤含水量、硝态氮含量、N2O排放之间的关系。结果表明,3种还原酶都有明显的季节变化规律并受土壤水分含量及施肥的影响。通过研究3种反硝化酶活性与土壤含水量及N2O排放量之间的关系后指出,反硝化酶活性变化可作为一个区分旱田N2O产生途径的指标.

关键词: 反硝化酶, NO3--N, 含水量, N2O

Abstract: Studies of the activities of soil nitrate reductase, nitrite reductase and hydroxylamine reductase in maize growing season and their relationship with soil water content, NO3--N content and N2O emission under fertilization showed that these three denitrifying enzymes had a significant seasonal variation and were influenced by soil water content and fertilization. The relationship between soil denitrifying enzymes, soil water content and N2O emission were further investigated, which indicated that the activities of soil denitrifying emzymes could be an index to distinguish the ways of N2O Oproductions in upland field.

Key words: Denitrifying enzymes, NO3--N, Soil water content, N2O