Nitrogen fertilization with DCD could mitigate N_2O emission, and have no significant effect on CH4 uptake rate.

• 在施肥处理中，添加DCD的尿素和碳铵处理能减少N_2O排放通量，同属于铵态氮肥的碳铵和尿素对旱地农田CH_4吸收的抑制作用没有显著差异。