The sustainable management of agricultural waste is essential for curtailing environmental contamination. To address the shortcomings of single treatment methods, this study evaluated the feasibility of combining membrane-covered composting (MC) with vermicomposting. Based on this, the integrated effects of different biochar addition strategies on the combined process were investigated. The aim was to improve the efficiency of vermicomposting while eliminating the negative effects of biochar on earthworms. Addition of biochar before membrane-covered composting increased total earthworm biomass by 25.6 − 31.4 % and reproduction rate by 13.4 − 23.9 %. Specifically, the electrical conductivity (EC) (1061.0 − 1112.0 uS/cm) of the vermicompost was significantly reduced, while the total nutrient content (42.3 − 42.6 mg/g) and germination index (GI) (103.9 − 108.4 %) were maximized. Additionally, reductions in the carbon-to-nitrogen ratio and volatile content were observed. Overall, combination process is a promising approach to improve the quality of vermicomposting. The study’s results offer a novel perspective on the value-added treatment of agricultural waste.

中文翻译：

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优化组合工艺中的生物炭添加策略：综合评估蚯蚓生长、木质纤维素降解和蚯蚓堆肥质量


农业废物的可持续管理对于减少环境污染至关重要。针对单一处理方法的缺点，本研究评估了覆膜堆肥（MC）与蚯蚓堆肥相结合的可行性。在此基础上，研究了不同生物炭添加策略对组合过程的综合影响。目的是提高蚯蚓堆肥的效率，同时消除生物炭对蚯蚓的负面影响。在覆膜堆肥前添加生物炭可使蚯蚓总生物量增加 25.6 − 31.4％，繁殖率增加 13.4 − 23.9％。具体而言，蚯蚓堆肥的电导率 (EC) (1061.0 − 1112.0 uS/cm) 显着降低，而总养分含量 (42.3 − 42.6 mg/g) 和发芽指数 (GI) (103.9 − 108.4%) 则最大化。此外，还观察到碳氮比和挥发物含量降低。总体而言，组合工艺是提高蚯蚓堆肥质量的一种有前途的方法。该研究结果为农业废弃物的增值处理提供了新的视角。