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| Influence of Biochar from Spent Mushroom Substrate on Properties of Pig Manure Compost and Rice Growth |
| Received:March 20, 2014 |
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| KeyWord:spent mushroom substrate;biochar;composting;physicochemical property;rice |
| Author Name | Affiliation | E-mail | | ZHANG Xiang | Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China | | | ZHANG Geng-ling | Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China | | | SUN Qian-nan | College of Environment and Energy, South China University of Technology, Guangzhou 510641, China | | | PENG Yan-bin | College of Environment and Energy, South China University of Technology, Guangzhou 510641, China | | | WANG Xing-dong | Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China | | | LI Meng | Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China | | | WANG Yin | Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China | yinwang@iue.ac.cn |
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| Abstract: |
| Spent mushroom substrate(SMS), a bulky waste byproduct of commercial mushroom industry, has caused environmental pollution. In this work, biochar derived from SMS was added to pig manure at a rate of 0, 5%, 10% and 15%(W/W) to investigate its effects on the physic-chemical properties of pig manure during composting and rice growth. Adding SMS-derived biochar significantly reduced electrical conductivity, initial moisture content and organic matter loss of the compost. The biochar additions significantly increased the N concentrations in the compost, but had no obvious effects on the concentrations of Ca and K. The concentrations of P and Mg in the fertilizer increased as compared to the control, but the increments decreased with increasing amount of the biochar. Applying SMS-derived biochar effectively promoted rice growth and increased the grain yield by 49% at 5% biochar. |
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