College of Life Science, Northeast Agricultural University, Harbin 150030, China.
College of Life Science, Northeast Agricultural University, Harbin 150030, China.
Bioresour Technol. 2022 Oct;361:127721. doi: 10.1016/j.biortech.2022.127721. Epub 2022 Jul 30.
In this study, nitrogen transformation of chicken manure (CM) and cattle dung (CD) during composting was analyzed and its related functional keystones were identified. The results showed that chicken manure showed more severe nitrogen conversion during composting. The main N conversion factors in cattle dung were nitrite nitrogen (NO-N) and ammonium nitrogen (NH-N), while the main N conversion factors in chicken manure were NH-N and nitrate nitrogen (NO-N). The nitrogen-transforming bacterial community in chicken manure was more diverse. Variations in functional keystone abundances in cattle dung tended to be confined to the cooling and maturation periods, whereas changes in chicken manure persisted throughout the composting process. Environmental factors affected the functional keystones of nitrogen transformation. This study may provide directions for regulating nitrogen conversion in animal manure composting.
本研究分析了鸡粪（CM）和牛粪（CD）在堆肥过程中的氮转化，并鉴定了相关功能关键。结果表明，鸡粪在堆肥过程中表现出更严重的氮转化。牛粪中主要的氮转化因素是亚硝酸盐氮（NO-N）和氨氮（NH-N），而鸡粪中主要的氮转化因素是氨氮和硝酸盐氮（NO-N）。鸡粪中的氮转化细菌群落更加多样化。牛粪中功能关键丰度的变化往往局限于冷却和成熟阶段，而鸡粪的变化则贯穿整个堆肥过程。环境因素影响氮转化的功能关键。本研究可为调控动物粪便堆肥中的氮转化提供方向。
