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Matured compost amendment improves compost nutrient content by changing the bacterial community during the composting of Chinese herb residues

文献类型： 外文期刊

作者： Song, Xiuchao 1 ; Lu, Chao 1 ; Luo, Jia 1 ; Gong, Xin 3 ; Guo, Dejie 1 ; Ma, Yan 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Saline Alkali Soil Improvement & Utilizat, Minist Agr & Rural Affairs, Nanjing, Peoples R China

2.Natl Agr Expt Stn Agr Environm, Nanjing, Peoples R China

3.Nanjing Agr Univ, Coll Resources & Environm Sci, Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, Jiangsu Key Lab Solid Organ Waste Utilizat, Nanjing, Peoples R China

关键词： Chinese herb residue; matured compost; nitrogen and humic acid; bacterial community; co-occurrence network

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.2； 五年影响因子：6.2 ）

ISSN：

年卷期： 2023 年 14 卷

页码：

收录情况： SCI

摘要： Composting is a sustainable strategy to deal with organic waste. Our research aimed to study the influence of an amendment of 10% matured compost (MC) during Chinese herb residue (CHR) compost. Here, a 60-day CHR compost was performed, and MC application was able to reduce the nitrogen loss and enhance the humic acid accumulation during the composting as compared with the non-inoculated control (NC), by 25 and 19%, respectively. Furthermore, the matured compost amendment improved the diversity of the bacterial community, increased the complexity of the co-occurrence network, and changed the keystone and module hub bacteria during composting. The increased abundance levels of Thermopolyspora, Thermobispora, and Thermosporomyces, which were significantly higher in MC than in NC, may contribute to the degradation of cellulose and the formation of humic acid. Overall, this study extends our understanding of the effects of matured compost reflux on compost quality and the bacterial community.

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