The goals of this study were to identify the key culturable organophosphorus-degrading bacteria (OPDB) that contributed to regulating different phosphorus (P) fractions and evaluate the roles of OPDB and inorganic phosphate-solubilizing bacteria (IPSB) in P transformation during different composting. The results showed that the amounts, incidence and community composition of OPDB for composts from diverse sources were distinctly different but significantly related to temperature and organic matter content. Fifteen key OPDB correlated closely with different P fractions have been selected by redundancy analysis. Two structural equation models were established to compare the roles of OPDB and IPSB on P availability during composting. Variance partitioning further showed that the interactions between IPSB and OPDB communities had a greater impact on P transformation than each independent factor. Therefore, the combined regulation of IPSB and OPDB were suggested to control the transformation of P fractions during composting.

这项研究的目的是确定关键的可培养的降解有机磷的细菌（OPDB），它们有助于调节不同的磷（P）组分，并评估在不同堆肥过程中，OPDB和增溶无机磷酸盐的细菌（IPSB）在磷转化中的作用。结果表明，来自各种来源的堆肥的OPDB的数量，发生率和群落组成明显不同，但与温度和有机质含量显着相关。通过冗余分析，选择了15个与不同P分数密切相关的关键OPDB。建立了两个结构方程模型，以比较OPDB和IPSB在堆肥过程中对磷有效性的作用。方差划分进一步表明，IPSB和OPDB社区之间的相互作用比每个独立因素对P转化的影响更大。因此，建议通过IPSB和OPDB的联合调节来控制堆肥过程中P组分的转化。