Microbial inoculation plays a significant role in promoting the efficiency of biowaste conversion. This study investigates the function of Inoculants (SBI) on carbon (C) and nitrogen (N) conversion, and microbial dynamics, during cow manure (10% and 20% addition) and corn straw co-composting. Compared to inoculant-free controls, inoculant application accelerated the compost's thermophilic stage (8 vs 15 days), and significantly increased compost total N contents (+47%) and N-reductase activities (nitrate reductase: +60%; nitrite reductase: +219%). Both bacterial and fungal community succession were significantly affected by DOC, urease, and NH-N, while the fungal community was also significantly affected by cellulase. The contribution rate of to the physicochemical factors of compost was as high as 83.40%, but by contrast there were no significantly different contributions (∼60%) among the top 20 fungal genera. Application of SBI induced significant correlations between bacteria, compost C/N ratio, and catalase enzymes, indicative of compost maturation. We recommend SBI as a promising bio-composting additive to accelerate C and N turnover and high-quality biowaste maturation. SBI boosts organic cycling by transforming biowastes into bio-fertilizers efficiently. This highlights the potential for SBI application to improve plant growth and soil quality in multiple contexts.

中文翻译：

---

使用链霉菌-芽孢杆菌接种提高碳氮周转、功能性细菌丰度以及生物废物转化效率

微生物接种对于提高生物废物转化效率具有重要作用。本研究调查了牛粪（添加 10% 和 20%）和玉米秸秆混合堆肥过程中接种剂 (SBI) 对碳 (C) 和氮 (N) 转化以及微生物动态的作用。与无接种剂的对照相比，接种剂的施用加速了堆肥的高温阶段（8天与15天），并显着增加了堆肥总氮含量（+47%）和氮还原酶活性（硝酸盐还原酶：+60%；亚硝酸盐还原酶：+ 219%）。细菌和真菌群落的演替均受到DOC、脲酶和NH-N的显着影响，而真菌群落也受到纤维素酶的显着影响。对堆肥理化因子的贡献率高达83.40%，但相比之下，前20个真菌属之间的贡献差异不显着（~60%）。 SBI 的应用引起细菌、堆肥 C/N 比和过氧化氢酶之间的显着相关性，表明堆肥成熟。我们推荐 SBI 作为一种有前途的生物堆肥添加剂，以加速碳和氮的周转和高质量生物废物的成熟。 SBI 通过有效地将生物废物转化为生物肥料来促进有机循环。这凸显了 SBI 应用在多种情况下改善植物生长和土壤质量的潜力。