Water-washed hydrochar in rice paddy soil reduces N 2 O and CH 4 emissions: A whole growth period investigation

Hydrochar (HC), an environment-friendly material, enhances soil carbon sequestration and mitigate greenhouse gases (GHGs) emissions in croplands. In this study, the water-washed HC (WW-HC) was applied to paddy soil to investigate effects on nitrous oxide (N O) and methane (CH ) emissions during rice...

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Bibliographic Details
Published in:Environmental pollution (1987) 2021-04, Vol.274, p.116573
Main Authors: Chen, Danyan, Zhou, Yibo, Xu, Cong, Lu, Xinyu, Liu, Yang, Yu, Shan, Feng, Yanfang
Format: Article
Language:English
Subjects:
Agriculture
Methane
Nitrous Oxide - analysis
Oryza
Soil
Water
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Summary:Hydrochar (HC), an environment-friendly material, enhances soil carbon sequestration and mitigate greenhouse gases (GHGs) emissions in croplands. In this study, the water-washed HC (WW-HC) was applied to paddy soil to investigate effects on nitrous oxide (N O) and methane (CH ) emissions during rice growth period. Four treatments, namely control (without N fertilizer and WW-HC), N fertilizer (WW-HC00), N fertilizer with 0.5 wt% WW-HC (WW-HC05) and N fertilizer with 1.5 wt% WW-HC (WW-HC15), were established. Results showed the WW-HC addition reduced N O and CH emissions, global warming potential (GWP) and greenhouse gas intensity (GHGI) during the growing season. Moreover, the WW-HC application reduced N O cumulative emission (P 
ISSN:1873-6424