就整个麦豆轮作生态系统而言，旱地土壤分别是大气n_2o、CH_4的源汇。

Dryland soil is atmospheric N_2O source and is sink of atmospheric CH_4.

youdao

就整个麦豆轮作生态系统而言，旱地土壤分别是大气n_2o、CH_4的源汇。

Dryland soil is atmospheric N_2O source and is sink of atmospheric CH_4.

youdao