Biology and Fertility of Soils

, Volume 49, Issue 6, pp 627–635

Mitigation of nitrous oxide emissions from paddy soil under conventional and no-till practices using nitrification inhibitors during the winter wheat-growing season

  • Yuchun Ma
  • Liying Sun
  • Xiaoxu Zhang
  • Bo Yang
  • Jinyang Wang
  • Bin Yin
  • Xiaoyuan Yan
  • Zhengqin Xiong
Original Paper

DOI: 10.1007/s00374-012-0753-7

Cite this article as:
Ma, Y., Sun, L., Zhang, X. et al. Biol Fertil Soils (2013) 49: 627. doi:10.1007/s00374-012-0753-7

Abstract

The net effect of no-till techniques on nitrous oxide (N2O) emissions is inconsistent and poorly quantified in comparison to conventionally tilled farming. This study assesses N2O emissions and yields from paddy fields during the wheat-growing season under conventional and no-till farming, as well as mitigation of N2O evolution using dicyandiamide and chlorinated pyridine (CP) as nitrification inhibitor (NI). Both tillage practices and NIs significantly (P < 0.01) affected cumulative N2O emissions and yields. In comparison to conventional tillage, the cumulative N2O emissions under no-till farming were increased by 8.2–19.3 % and the water-filled pore space was higher on most days. Relative to no-tillage, the conventional tillage averagely increased the wheat yield by 6.0 % and reduced yield-scaled N2O–N emission by 44.5 %. The two NIs averagely increased the wheat yield by 9.7 % and reduced yield-scaled N2O–N emission by 67.7 %. The treatment with CP produced the highest yield with the lowest N2O emissions, thus leading to the lowest yield-scaled N2O–N emission (0.15–0.17 kg N2O–N t−1 grain yield) under both tillage practices.

Keywords

Nitrous oxideNo tillageWheatNitrification inhibitorAgronomic N use efficiency

Supplementary material

374_2012_753_MOESM1_ESM.xls (44 kb)
Appendix 1Daily mean air temperature and rainfall during the wheat-growing season in 2011–2012 in Changshu, China (XLS 43 kb)

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Yuchun Ma
    • 1
  • Liying Sun
    • 1
  • Xiaoxu Zhang
    • 1
  • Bo Yang
    • 1
  • Jinyang Wang
    • 1
  • Bin Yin
    • 2
  • Xiaoyuan Yan
    • 2
  • Zhengqin Xiong
    • 1
  1. 1.Jiangsu Key Laboratory of Low Carbon Agriculture and GHG Mitigation, College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjingChina
  2. 2.State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil ScienceChinese Academy of SciencesNanjingChina