Co-composting of forest residues (FR) with cattle manure (CM) results in a low nitrogen (N) conversion efficiency, a low organic matter (OM) degradation rate, and a low quality compost product. This study evaluated the effects of addition of bone charcoal (BC), pumice (PM), or straw biochar (SB) at a ratio of 10% (w/w) on the co-composting of FR with CM. The highest quality compost was obtained with addition of 10% PM. Compared with the control (without any additive), PM addition increased the OM degradation rate, the nitrate-N, the available phosphorus, and the available potassium by 25%, 110%, 24%, and 9%, respectively, and increased the relative abundance of bacteria (Planomicrobium, Flavobacterium, and Pseudomonas) involved in lignocellulose degradation and N transformation. With the addition of PM, the co-composting of FR with CM generated a high quality, useful product in only 39 days.

将森林废弃物 (FR) 与牛粪 (CM) 混合堆肥会导致氮 (N) 转化效率低、有机物 (OM) 降解率低以及堆肥产品质量低下。本研究评估了以 10% (w/w) 的比例添加骨炭 (BC)、浮石 (PM) 或秸秆生物炭 (SB) 对 FR 与 CM 共同堆肥的影响。添加 10% PM 可获得最高质量的堆肥。与对照（不加任何添加剂）相比，添加PM可使有机质降解率、硝态氮、速效 磷和 速效钾 分别提高25%、110%、24%和9%，并提高细菌的相对丰度（Planomicrobium，Flavobacterium和Pseudomonas) 参与木质纤维素降解和 N 转化。添加 PM 后，FR 与 CM 的共同堆肥仅在 39 天内就产生了高质量、有用的产品。