This study aimed to reveal the role of Black Tourmaline (TM) in the humification enhancement and the mechanism of nitrogen transformation during pig manure composting. Results showed that adding TM promoted the maturity and improved the humification degree by 20.13-33.77%. And TM was beneficial for the transformation from NH₄⁺-N to amino organic nitrogen to fix more nitrogen in compost mass. Then NH₃ and N₂O volatilization were decreased by 22.88–34.76% and 69.79–87.47% by comparison with the control, and the minimum value in nitrogen loss (26.78%) was observed in the 10% TM blended treatment. Furthermore, through RDA analysis, the protease an upmost contributor to nitrogen transformation. Meanwhile, total organic carbon was dominant factor affected enzymatic activities. Therefore, 10% TM was suggested to reduce nitrogen loss and increase humification in this research. Deeply related research in gene and specific addition amounts of TM will be investigated later.

这项研究旨在揭示黑色电气石（TM）在猪粪堆肥过程中的增效作用和氮转化机制中的作用。结果表明，添加TM可促进其成熟度，并使腐殖化度提高20.13-33.77％。而TM有利于从NH ₄ ⁺ -N向氨基有机氮的转化，从而将更多的氮固定在堆肥中。然后是NH ₃和N ₂与对照相比，O挥发减少了22.88–34.76％和69.79–87.47％，并且在10％TM混合处理中观察到了最低的氮损失值（26.78％）。此外，通过RDA分析，蛋白酶是氮转化的最大贡献者。同时，总有机碳是影响酶活性的主要因素。因此，在本研究中建议使用10％的TM来减少氮的损失并增加腐殖质。TM的基因和特定添加量的深入研究将在以后进行。