本试验探讨作物根茬对土壤团聚体的影响。测定结果表明:作物根茬留在土壤中能够增加水稳性团聚体的数量、玉米根茬优于其他作物,即玉米>高粱>谷子>大豆。玉米连作三年的优于连作二年的,玉米连作二年的优于豆茬玉米。玉米适当连作并且不刨除根茬,可以改善土壤的结构状况,还可收到培肥与增产的效益。 This experiment explored the effect of crop stubble on soil aggregates. The results showed that the stubble in the soil could increase the number of water-stable aggregates. The stubble of corn was superior to other crops, namely corn> sorghum> millet> soybean. Even three years of continuous cropping of corn is better than continuous cropping of two years, corn is better than bean stubble corn for two years. Appropriate continuous cropping and unwrapping of stubble can improve soil structure and benefit from fertilizing and increasing yield.