Objective: The paper uncovered the wheat and potato strip intercropping farmland's resistance effects to wind erosion in the agro-pastoral ectone in order to provide theoretical foundation and techonological direction. Method: Based on agro-pastoral mixed areas of Yinshan Mountain in Inner Mongolia, soil-erosion testing experiments were conducted on three stubble coverage farmland (wheat stubble coverage, coverage 65% and 76%, stubble height 20 cm and 30 cm; naked oats stubble coverage, coverage 90%, stubble height 30 cm) under 5 scheduled velocities (6, 9, 12, 15 and 18 m/s) by means of the movable wind tunnel and its suited velocity and sand sampling equipments. The author analyzed the change disciplinarian of the surfaces' aerodynamic roughness and wind erosion amount with the increasing distance of tested points (3, 3.75, 4.5, 5.25 and 6 m) from wind tunnel experiment section entrance (Simulating conservation tillage farmland's stubble widths). Result: The roughness of three kinds of surface showed early increasing and subsequent decreasing trend with the increasing distance of tested points from wind tunnel experiment section entrance under different velocities and the majority reached the max when the distance was 5.25 m; The wind erosion amount revealed rapid decreasing trend with the increasing distance of tested points from wind tunnel experiment section entrance under different velocities, the decreasing trend of wind erosion amount was gentle when the distance reached 5.25 m. Conclusion: Conservation tillage farmland's stubble height and vegetation coverage increase anti-wind erosion significantly. Anti-wind erosion effect of conservation tillage farmland tends to be more steady and significant when conservation tillage farmland effective width reaches 5.25 m.
