秸秆直接还田是指秸秆不经腐熟,通过人工或机械操作,按照不同形式直接将秸秆归还土壤的一种培肥改土技术。实践证明,秸秆直接还田对增加土壤养分、改善土壤物理性质、蓄水保墒、减少水土流失、降低生产成本等均有显著的效果。目前,各地秸秆还田方法归纳起来主要有以下3种。 Straw directly into the field refers to the straw without maturity, through artificial or mechanical operation, according to different forms of straw directly returned to the soil a soil improvement technology. Practice has proved that direct straw return to increase soil nutrients, improve soil physical properties, water and soil moisture, reduce soil erosion, reduce production costs have a significant effect. At present, all over the straw returning method summed up the following three kinds.