【摘要】 小麦秸秆直接覆盖还田有助于保持土壤水分 ,降低土壤温度 ,增加土壤表层微生物量 ,而秸秆焚烧还田的作用不显著。秸秆直接还田可提高土壤全N含量。秸秆腐解速率受还田方式的影响大 ,而与还田量关系不大 ;玉米产量随着小麦秸秆覆盖还田量的增加而增加。玉米秸秆 2倍量还田的小麦不减产更多还原

【Abstract】 Mulching wheat stalks into soil can maintain soil moisture,reduce soil temperature,increase soil microbe amount.But the treatment with stalks burned has no the effects.Returning crop residues into soil can increase the N content of soil.Stalks decomposition rate was effected by the methods of returning stalks into soil,not by the amount of stalks.Crop yield didn′t decrease in the treatment of twice amount stalks.The yield of the treatment stalks burned was the lowest.更多还原