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Effects of biochar carried microbial agent on compost quality,greenhouse gas emission and bacterial community during sheep manure composting

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biochar 2023年第1期5卷 42-58页

作者： Zhe Wang Yilin Xu Tong Yang Yongqi Liu Tingting Zheng Chunli Zheng School of Energy and Environment Inner Mongolia University of Science and TechnologyBaotou 014010China Inner Mongolia Engineering Research Center of Evaluation and Restoration in the Mining Ecological Environment Inner Mongolia University of Science and Technology014010 BaotouChina

Although composting is a very effective way to dispose agricultural wastes,its development is greatly limited by the low compost quality and greenhouse gas *** present,there is a lack of effective means to solve these two problems ***,the effects of three additives of compound microbial agent,biochar and biochar carried microbial agent on the composting performance,nitrogen transformation,greenhouse gas and ammonia emissions,and bacterial communities were investigated in sheep manure composting during 28 *** showed that biochar carried microbial agent prolonged the thermophilic stage and promoted compost *** the same time,it was confirmed by the increase of the decomposition of organic nitrogen and the transformation of NH_(4)^(+)-N to NO_(3)^(−)-***,adding biochar carried microbial agent decreased CH_(4),NH_(3) and N_(2)O emissions by 65.23%,42.05%and 68.64%,*** gas emissions were mainly correlated to Chloroflexi,Myxococcota,Acidobacteriota,Firmicutes,and *** analysis showed that EC and TKN were closely related to bacterial ***,biochar carried microbial agent is recommended as an effective additive to enhance compost quality and reduce gas emissions during sheep manure composting.

关键词： biochar carried microbial agent Sheep manure Composting Nitrogen transformation Bacterial community Greenhouse gases

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