[Responses of denitrifying functional gene abundance to long-term fertilization regimes in an upland Ultisol].
Song Wan, Chun-Jian Duan, Jian-Bo Fan, Gui-Ping Ye, Quan-Cheng Wang, Ji-Zheng He, Yong-Xin Lin
Ying yong sheng tai xue bao = The journal of applied ecology / Zhongguo sheng tai xue xue hui, Zhongguo ke xue yuan Shenyang ying yong sheng tai yan jiu suo zhu ban | Ying Yong Sheng Tai Xue Bao Bian Ji Wei Yuan Hui | Published : 2020
Fertilization affects soil nitrogen cycling and nitrous oxide (N2O) emissions, which are mainly driven by microbes. A 32-year field experiment was conducted to investigate the effects of chemical fertilizers and their combination with organic materials on the abundance of denitrifying functional genes (nirS, nirK, nosZ I and nosZ II) in Ultisol. The treatments comprised no fertilizer (CK), chemical fertilizer, chemical fertilizer+peanut straw, chemical fertilizer+rice straw, chemical fertilizer+radish and chemical fertilizer+pig manure. Compared with the single chemical fertilizer treatment, soil pH and organic carbon content increased in the chemical fertilizer plus organic material treatme..View full abstract