阴山北麓农牧交错区农田土壤的风蚀特性试验研究

Study on the Drifting Sand Character of Farming-pastoral Zone of Yinshan Mountain Farmland Soil by the Wind Tunnel Simulation

试验利用内蒙古农业大学自行研制的移动式风蚀风洞对阴山北麓的武川县保护性耕作农田地表进行了土壤风蚀测试,按照小麦和莜麦收获后的留茬高度和地表植被覆盖度的不同搭配方式,在不同风速下测量了风速变换规律、土壤风蚀率等参数;通过数据分析得出保护性耕作农田地表的抗风蚀性能力比普通农田提高最高可达47.2%。该项研究为当地农田土壤风蚀防治技术的进一步推广应用提供了参考数据。

The experimental and study surveyed farmland conservation tillage of Wuchuan County in Yinshan Mountain by mobile wind tunnel of Inner Mongolia agricultural university self-manufacture,according to wheat and naked oats with the different post-harvest stubble height,vegetation coverage combination of different pattern,to measure transform the law of wind speed and parameters of soil erosion rate at different wind speed.Conservation tillage fields of anti-surface wind fields improve up to 47.2% than the general performance by data analysis.The study provides the theoretical and technical foundation for the local soil erosion control techniques to further promotion.