A field experiment was carried out to study the effects of three different rice straw returning methods (straw mulching, straw burning and straw incorporating) on N2O emissions from wheat field.

• 摘要通过田间试验研究了3种稻秆还田方式（表面覆盖、均匀混施和原位焚烧）对麦田N2O排放的影响。