Effects of straw incorporation along with microbial inoculant on methane and nitrous oxide emissions from rice fields

The Science of the Total Environment
Gang LiuYiqing Zhuang

Abstract

Incorporation of straw together with microbial inoculant (a microorganism agent, accelerating straw decomposition) is being increasingly adopted in rice cultivation, thus its effect on greenhouse gas (GHG) emissions merits serious attention. A 3-year field experiment was conducted from 2010 to 2012 to investigate combined effect of straw and microbial inoculant on methane (CH4) and nitrous oxide (N2O) emissions, global warming potential (GWP) and greenhouse gas intensity (GHGI) in a rice field in Jurong, Jiangsu Province, China. The experiment was designed to have treatment NPK (N, P and K fertilizers only), treatment NPKS (NPK plus wheat straw), treatment NPKSR (NPKS plus Ruilaite microbial inoculant) and treatment NPKSJ (NPKS plus Jinkuizi microbial inoculant). Results show that compared to NPK, NPKS increased seasonal CH4 emission by 280-1370%, while decreasing N2O emission by 7-13%. When compared with NPKS, NPKSR and NPKSJ increased seasonal CH4 emission by 7-13% and 6-12%, respectively, whereas reduced N2O emission by 10-27% and 9-24%, respectively. The higher CH4 emission could be attributed to the higher soil CH4 production potential triggered by the combined application of straw and microbial inoculant, and the lower N2...Continue Reading

References

Jun 20, 1977·Archives of Microbiology·M Habte, M Alexander
Mar 1, 2004·FEMS Microbiology Ecology·Paul L E Bodelier, Hendrikus J Laanbroek
Jan 8, 2014·Global Change Biology·Chang LiuChangming Fang
Jul 22, 2014·Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica·Li LiWen-Quan Wang

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Citations

Oct 12, 2016·The Science of the Total Environment·Guochun XuYuhao Hang
Jun 2, 2018·Environmental Science and Pollution Research International·Feng ShengCheng-Fang Li
Feb 13, 2019·Science Advances·Yu JiangWeijian Zhang
Jan 16, 2021·Environmental Science and Pollution Research International·Dong Duy PhamToru Watanabe

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