The N2O flux was higher in wheat field than in fallowed field, and decreased in the order of film-mulching > routine treatment > single phosphorus fertilization.

• 管理措施不同，作物对土壤N2O排放通量的影响效应亦不同，麦田小区土壤N2O排放通量高于休耕小区N2O，且覆膜处理＞常规处理＞单施磷肥处理；