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Straw biochar hastens organic matter degradation and produces nutrient-rich compost

文献类型： 外文期刊

作者： Zhang, Jining 1 ; Chen, Guifa 1 ; Sun, Huifeng 1 ; Zhou, Sheng 1 ; Zou, Guoyan 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, Shanghai 201403, Peoples R China

2.SERCLA, Shanghai 201415, Peoples R China

3.Shanghai Coelite Agr Sci Tech Grp Co Ltd, Shanghai 201106, Peoples R China

关键词： Composting;Crop straw;Straw biochar;Pig manure;Water-soluble nutrients

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

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收录情况： SCI

摘要： Biochar derived from wheat straw was added to pig manure in amounts equivalent to 5%, 10%, or 15% (w/w, wet weight). The ratios of NH4+/NO3 and of UV light absorption at a wavelength of 254 nm (SUV254) and dissolved organic carbon (DOC) indicated that compost with 10-15% biochar became more mature and more humified within 42 days of composting, and the content of DOC and the concentration of NH4+ in such compost decreased by 37.5-62.0% and 4.0-20.9%, respectively, compared to the corresponding levels in the control. Addition of biochar lowered the pH and increased electrical conductivity by 7.0-37.5% compared to the control and also increased the concentrations of water-soluble nutrients including PO43 (5.6-7.4%), K+ (14.2-58.6%), and Ca2+ (0-12.5%). It is therefore recommended that straw biochar be added to pig manure at 10-15% by weight. (C) 2015 Elsevier Ltd. All rights reserved.

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