Song Xiuchao, Lu Chao, Luo Jia, Gong Xin, Guo Dejie, Ma Yan
Key Laboratory of Saline-Alkali Soil Improvement and Utilization (Coastal Saline-Alkali Lands), Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
National Agricultural Experimental Station for Agricultural Environment, Luhe, Nanjing, China.
Front Microbiol. 2023 Mar 16;14:1146546. doi: 10.3389/fmicb.2023.1146546. eCollection 2023.
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 , , and , 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.
堆肥是处理有机废物的一种可持续策略。我们的研究旨在探讨在中国药渣（CHR）堆肥过程中添加10%成熟堆肥（MC）的影响。在此，进行了为期60天的CHR堆肥实验，与未接种对照（NC）相比，添加MC能够减少堆肥过程中的氮损失，并分别提高25%和19%的腐殖酸积累。此外，添加成熟堆肥改善了细菌群落的多样性，增加了共现网络的复杂性，并改变了堆肥过程中的关键和模块枢纽细菌。MC中、和的丰度水平增加，显著高于NC，可能有助于纤维素的降解和腐殖酸的形成。总体而言，本研究扩展了我们对成熟堆肥回流对堆肥质量和细菌群落影响的理解。
