The results showed that the values of N2O emissions were ranked in the order of straw mulching>without straw returning (control)>straw incorporating>straw burning.

• 结果表明，不同稻秆还田方式麦田N2O排放量为：表面覆盖＞对照（不施稻秆）＞均匀混施＞原位焚烧。