利用可移动野外风蚀风洞对北京周边典型农田进行了农田风蚀的研究。主要考察耕作制度、地表状况、风速和作物行向4种因素对风蚀的影响规律。试验结果表明:与传统翻耕对比,一年两熟免耕覆盖地和一年一熟的玉米根茬地都可以减少土壤风蚀。地表覆盖量的增加可以减少地表土壤的风蚀,覆盖量越大,减少愈明显。一年一熟区地表以玉米根茬防治风蚀为主,风向与行向平行时风蚀量最大,垂直时最小,45°时介于两者之间;风速较大时,玉米根茬的根系有较好的固土作用。最后对防治农田风蚀提出了相关对策。 A wind farm with movable wind erosion was used to study farmland wind erosion on typical farmland around Beijing. Mainly studied the farming system, surface conditions, wind speed and crop line direction of the four kinds of factors on the impact of wind erosion. The test results show that compared with the traditional tillage, soil wind erosion can be reduced by two-year no-tillage and one-year-old corn stubble. The increase of surface coverage can reduce the wind erosion of surface soil. The larger the coverage, the more obvious the reduction. Wind erosion is mainly controlled by corn stubble in the surface of a year. The amount of wind erosion is the largest when the direction of wind is parallel to the direction of row, and the minimum when vertical is between 45 °. When the wind speed is large, the root system of corn stubble Better soil effect. Finally, the countermeasures against the wind erosion in farmland are put forward.