文献类型： 外文期刊

作者： Yu, Huiyong ¹ ; Li, Panpan ¹ ; Bo, Guodong ¹ ; Shen, Guoming ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Tobacco Res Inst, Key Lab Tobacco Biol & Proc, Minist Agr & Rural Affairs, 11 Keyuanjingsi Rd, Qingdao 266101, Peoples R China

2.Shandong Acad Agr Sci, Qingdao Branch, 168 Wannianquan Rd, Qingdao 266071, Peoples R China

3.CAAS, Tobacco Res Inst, 11 Keyuanjingsi Rd, Qingdao, Peoples R China

关键词： Compost; Inorganic fertilizer; Humic acid; Extracellular enzyme; Growth-promoting bacteria

期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：8.7； 五年影响因子：8.4 ）

ISSN： 0301-4797

年卷期： 2024 年 353 卷

页码：

收录情况： SCI

摘要： The effects of inorganic fertilizer addition method on the organic-inorganic co-composting process, especially the structure of humic acid and the mechanism of microbial nutrient restriction, are unclear. In this article, the effects of one-time and fractional addition of inorganic fertilizer on the structure of humic acid, extracellular enzyme activity, extracellular enzyme stoichiometry and the culturable growth-promoting bacteria during organic-inorganic co-composting were determined. The results showed that the addition of inorganic fertilizer promoted the humification degree of compost. Compared nitrogen with phosphorus, the fermentation microorganism behaved as N-restricted throughout the process. Compared one-time addition with fractional addition of inorganic treatments, the TOC, WSOC, NO3--N and humic acid content in the mature compost of the one-time addition treatment were higher. The contents of nitrogen, oxygen, the carboxyl functional groups, aromatic compounds, and the nitrogen/carbon atomic ratio in the humic acid structure increased as the composting process proceeded, while the contents of hydrogen, aliphatic substances, and the hydrogen/carbon atomic ratio decreased, and the elemental composition and structural changes of humic acids indicated that the humification degree of the one-time addition treatment was higher. The addition of inorganic fertilizer increased the relative abundances of Bacillus megaterium and Bacillus subtilis in the mature compost.