Journal
CARBON MANAGEMENT
Volume 5, Issue 2, Pages 145-154Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17583004.2014.912866
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Funding
- China Ministry of Agriculture [20110402-201261]
- China Ministry of Science and Technology [2013GB23600666]
- China Ministry of Education [20120097130003]
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Background: Biochar from pyrolysis of biomass amended in soils to improve nitrogen use efficiency for enhancing crop productivity and mitigate climate change in agriculture has been well documented. However, application for soil amendment of biochar at high rates could be challenged with cost-effectiveness for small-scale household farms. Results: This study, by field testing four organic/inorganic compound fertilizers of biochars pyrolysed via different biowastes compared with conventional chemical fertilizer in a rice paddy, evidenced that biochar compound fertilizer application at a much lower rate of N input ensured rice productivity by improving N use efficiency and reduced GHG emission in rice production. Conclusion: Use of biowaste-converted biochars for organic/inorganic compound fertilizer can be an option to achieve high productivity and low carbon intensity along with saving N nitrogen fertilizer use in Chinese rice agriculture.
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