基于麦饭石与添加剂不同联用方式对猪粪堆肥过程的调控

针对单一添加剂施用于堆肥中作用有限，且多种添加剂混合施用效果不明的问题，向猪粪堆肥中添加麦饭石，以及其与竹炭和高温好氧菌剂的不同联用处理；通过对理化性质以及门水平上微生物群落的测定，了解各添加剂处理对堆肥过程的改善效果，并用冗余分析探究了微生物群落变化与环境因子的多元关系。结果表明，添加麦饭石及其联用剂对理化性质的优化不明显，尤其未明显加快堆肥速率；在堆肥过程中，门水平上的4种优势菌落数量均发生了变化，pH是该堆肥化过程微生物改变的主要驱动因素；堆肥过程CO₂、CH₄、NH₃及N₂O的排放主要与厚壁菌门和拟杆菌门的菌落活动相关。该研究结果可为堆肥生产中添加剂的混合施用提供参考。

Regulation of the pig manure composting process based on the different combined methods of medical stone and additives

In view of the limited effect of a single additive in composting in practical applications, and the combined effects of multiple additives are unknown. Medical stone was added to pig manure compost, as well as its combination with bamboo charcoal and high-temperature aerobic bacteria. Through the determination of the physical and chemical properties and the microbial community at the phylum level, the improvement effect of each additive treatment on the composting process was recognized, and then redundant analysis was used to explore the multi-relationship between the change of the microbial community and environmental factors. The results showed that the addition of medical stone and its combination agent did not significantly optimize the physical and chemical properties, especially the composting rate was not significantly accelerated. The number of four dominant colonies at the phylum level changed during the composting process, pH was the main driving factor for microbial changes in the composting process, and the CO2, CH4, NH3 and N2O emissions during the composting process were mainly related to the activities of Firmicutes and Bacteroidetes. This result can provide a reference for the combined use of additives in compost production.