Incubation test showed that when soils have same water filled pore space (WFPS) content, the influence on N2O emission of soil from wet to dry is bigger than that from dry to wet.

• 培养结果说明，在相同的土壤孔隙水含量(WFPS)条件下，土壤由湿变乾过程产生的N2O通量高于土壤由乾变湿过程中的产生量；