Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (3): 635-640.DOI: 10.1016/S2095-3119(13)60721-2

• 论文 • 上一篇    下一篇

Effect of Biogas Digested Liquid on CH4 and N2O Flux in Paddy Ecosystem

 Ankit Singla , Kazuyuki Inubushi   

  1. Bioresource Science, Graduate School of Horticulture, Chiba University, Matsudo, Chiba 271-8510, Japan
  • 收稿日期:2013-10-09 出版日期:2014-03-01 发布日期:2014-03-12
  • 通讯作者: Ankit Singla, Tel: +81-47-3088818, Fax: +81-47-3088720, E-mail: ankitsingla2607@yahoo.co.in
  • 作者简介:Ankit Singla, Tel: +81-47-3088818, Fax: +81-47-3088720, E-mail: ankitsingla2607@yahoo.co.in
  • 基金资助:

    The first author is thankful to Indian Council of Agricultural. Research (ICAR), India, to provide financial support under. International Fellowship Scheme to carry out this study.

Effect of Biogas Digested Liquid on CH4 and N2O Flux in Paddy Ecosystem

 Ankit Singla , Kazuyuki Inubushi   

  1. Bioresource Science, Graduate School of Horticulture, Chiba University, Matsudo, Chiba 271-8510, Japan
  • Received:2013-10-09 Online:2014-03-01 Published:2014-03-12
  • Contact: Ankit Singla, Tel: +81-47-3088818, Fax: +81-47-3088720, E-mail: ankitsingla2607@yahoo.co.in
  • About author:Ankit Singla, Tel: +81-47-3088818, Fax: +81-47-3088720, E-mail: ankitsingla2607@yahoo.co.in
  • Supported by:

    The first author is thankful to Indian Council of Agricultural. Research (ICAR), India, to provide financial support under. International Fellowship Scheme to carry out this study.

摘要: Biogas production generates digested slurry as a byproduct. It can be used as a fertilizer especially after its conversion into digested liquid. A pot based study was conducted in order to evaluate the effect of the application of digested liquid on CH4 and N2O flux, and plant biomass in paddy. Analysis revealed that digested liquid treated soils released more CH4 compared to ammonium sulphate and the control. Ammonium sulphate treated soil emitted the highest N2O whereas digested liquid application decreased its emission significantly. Further, the cumulative emission over 101 d of the experiment was found to be higher for CH4 (16.9 to 29.9 g m-2) compared to N2O (-49.3 to 18.9 mg m-2) for all treatments. Digested liquid application had positive impact on plant variables such as panicle number and weight of panicles. This study suggests that digested liquid application significantly decrease N2O emission and increase CH4 emission possibly due to affecting the availability of organic C in the soil to microbial activity for methanogenesis. Another possibility for enhancing CH4 emission by following biogas digested liquid could be attributed to the increase in plant biomass.

关键词: biogas digested liquid , paddy , ammonium sulphate , CH4 , N2O , plant biomass

Abstract: Biogas production generates digested slurry as a byproduct. It can be used as a fertilizer especially after its conversion into digested liquid. A pot based study was conducted in order to evaluate the effect of the application of digested liquid on CH4 and N2O flux, and plant biomass in paddy. Analysis revealed that digested liquid treated soils released more CH4 compared to ammonium sulphate and the control. Ammonium sulphate treated soil emitted the highest N2O whereas digested liquid application decreased its emission significantly. Further, the cumulative emission over 101 d of the experiment was found to be higher for CH4 (16.9 to 29.9 g m-2) compared to N2O (-49.3 to 18.9 mg m-2) for all treatments. Digested liquid application had positive impact on plant variables such as panicle number and weight of panicles. This study suggests that digested liquid application significantly decrease N2O emission and increase CH4 emission possibly due to affecting the availability of organic C in the soil to microbial activity for methanogenesis. Another possibility for enhancing CH4 emission by following biogas digested liquid could be attributed to the increase in plant biomass.

Key words: biogas digested liquid , paddy , ammonium sulphate , CH4 , N2O , plant biomass