College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling 712100, Shaanxi, China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.
Bioresour Technol. 2019 Dec;293:122031. doi: 10.1016/j.biortech.2019.122031. Epub 2019 Aug 17.
The influence of pine leaf biochar (PLB) amendment on bacterial community succession and its correlation with physic-chemical parameters during pig manure (PM) composting was evaluated. The five different dosages of PLB [at 0% (T1), 2.5% (T2), 5% (T3), 10% (T4) and 15% (T5)] mixed with initial composting mass were conducted to composting for 50 days. The present study indicated that bacterial diversity was significantly (p < 0.05) higher in PLB amended treatments than the control, but T4 treatment showed the highest among the all PLB applied treatment. Firmicutes, Actinobacteria, Proteobacteria and Bacteroidete were four most abundant phyla of all the treatments. Furthermore, redundancy analysis showed that the bacterial community were significantly (p < 0.05) positively correlated with temperature, pH, TOC, CO and NH emissions, while they were negatively correlated with the NO and CH emission. Overall, the results suggested that the addition of 10% PLB (T4 treatment) was a potential option to enhance the composting efficiency with significantly greater abundance of bacterial community and finally improved the compost quality.
研究了添加松针生物炭（PLB）对猪粪（PM）堆肥过程中细菌群落演替的影响及其与理化参数的相关性。将 5 种不同剂量的 PLB [0%（T1）、2.5%（T2）、5%（T3）、10%（T4）和 15%（T5）]与初始堆肥质量混合进行堆肥 50 天。本研究表明，添加 PLB 的处理中细菌多样性明显（p<0.05）高于对照，但 T4 处理在所有添加 PLB 的处理中表现最高。厚壁菌门、放线菌门、变形菌门和拟杆菌门是所有处理中最丰富的四个门。此外，冗余分析表明，细菌群落与温度、pH 值、TOC、CO 和 NH 排放呈显著正相关（p<0.05），而与 NO 和 CH 排放呈显著负相关。总的来说，结果表明添加 10%PLB（T4 处理）是一种提高堆肥效率的潜在选择，可显著增加细菌群落的丰度，最终提高堆肥质量。
