College of Life Science, Northeast Agricultural University, Harbin 150030, China.
College of Life Science, Northeast Agricultural University, Harbin 150030, China.
Bioresour Technol. 2020 May;303:122849. doi: 10.1016/j.biortech.2020.122849. Epub 2020 Jan 22.
The goal of this work was to explore the effect of Fenton pretreatment combined with bacteria inoculation on the formation of humic substances (HS) during rice straw composting. In this study, the compound bacterial agents were inoculated after Fenton pretreatment during rice straw composting. The results suggested that the coupling effects of Fenton pretreatment and bacteria inoculation promoted the humification process, which might be the reason of organic fractions degradation and transformation. In addition, the bacterial communities structure and diversity were changed by Fenton pretreatment and inoculation. Key microbial genera linking to the transformation of organic fractions were determined by network analysis. Redundancy analysis and structural equation model analysis indicated that Fenton pretreatment, inoculation, amino acid, soluble sugar and beta-diversity as the key factors affecting organic fractions transformation during composting. Therefore, the combined application Fenton pretreatment with bacteria inoculation provided a new method to promote the HS amount.
本研究旨在探索芬顿预处理联合接种细菌对水稻秸秆堆肥过程中腐殖质（HS）形成的影响。在本研究中，在水稻秸秆堆肥过程中进行芬顿预处理后接种复合细菌剂。结果表明，芬顿预处理和接种的耦合作用促进了腐殖化过程，这可能是有机物质降解和转化的原因。此外，细菌群落结构和多样性也因芬顿预处理和接种而发生变化。通过网络分析确定了与有机物质转化相关的关键微生物属。冗余分析和结构方程模型分析表明，芬顿预处理、接种、氨基酸、可溶性糖和β多样性是影响堆肥过程中有机物质转化的关键因素。因此，芬顿预处理与接种细菌的联合应用为促进 HS 生成提供了一种新方法。
