生物炭
肥料
硝化作用
蛋白质细菌
堆肥
修正案
稻草
氮气
动物科学
化学
环境科学
生物
农学
细菌
热解
遗传学
16S核糖体RNA
有机化学
法学
政治学
作者
Zhuangzhuang Liu,Yan Zhou,Gang Liu,Xinyu Wang,Jun Fang
标识
DOI:10.1016/j.biortech.2023.129029
摘要
This study investigated the impacts of adding FeSO4 and biochar to cattle manure and rice straw composts on functional genes controlling nitrogen loss, bacterial community, nitrification, and denitrification. Four treatments were established, including a control group (CP), and CP mixtures that included 4% biochar (TG1), 4% FeSO4 (TG2), or 2% FeSO4 and 2% biochar (TG3). Compared to CP, TG1-3 had a lower total nitrogen loss rate, and TG3 resulted in reduced NH3 (52.4%) and N2O (35.6%) emissions to mitigate nitrogen loss. The abundance of amoA and narG gene in TG3 was higher than in the other groups, and TG3 was beneficial to the growth of Proteobacteria and Actinobacteria. According to redundancy and Pearson analysis, TG3 had a positive effect on the nitrification process by increasing the abundance of amoA and narG. Thus, biochar and FeSO4 addition mitigate nitrogen loss by regulating the nitrification processes.
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