College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
Bioresour Technol. 2022 Sep;360:127644. doi: 10.1016/j.biortech.2022.127644. Epub 2022 Jul 19.
The impact of scleral protein shell (SPS) amendment on bacterial community succession during pig manure (PM) composting were evaluated in the present work. Five treatments representing different dry weight dosage of SPS [0 % (T1), 2.5 % (T2), 5 % (T3), 7.5 % (T4), 10 % (T5) and 12 % (T6)] were applied with initial mixture of raw materials (Wheat straw along with the PM) and composted for 42 days. Results indicated that the dominant of phyla were Proteobacteria, Actinobacteria, Bacteroidetes and Firmicutes. The relative abundance (RA) of genus un-identified, Ruminofilibacter, Thermovum, Longispora and Pseudomonas were greater among the all treatments but interestingly genus Ruminofilibacter was also higher in control treatment. The network analysis was confirmed that T6 treatment with higher dosage of SPS amendment could enhance the bacterial population and rate of organic matter mineralization. Compared with T1, the T5 has greater potential impact to enhance the bacterial population and significant correlation among the pH and temperature.
本研究评估了巩膜蛋白壳（SPS）改良对猪粪（PM）堆肥过程中细菌群落演替的影响。采用不同干重剂量的 SPS（0%（T1）、2.5%（T2）、5%（T3）、7.5%（T4）、10%（T5）和 12%（T6））进行了 5 种处理，初始原料混合物为小麦秸秆和 PM，并堆肥 42 天。结果表明，优势菌门为变形菌门、放线菌门、拟杆菌门和厚壁菌门。在所有处理中，未鉴定属、瘤胃菌属、Thermovum 属、长孢属和假单胞菌属的相对丰度（RA）较高，但有趣的是，对照处理中的瘤胃菌属也较高。网络分析证实，SPS 改良剂量较高的 T6 处理可以增强细菌种群和有机质矿化速率。与 T1 相比，T5 对增强细菌种群有更大的潜力，并且 pH 值和温度之间存在显著相关性。
