The aerodynamic roughness and residual stubble density as well as residual stubble height have good relativity, which is the form of exponential function, however they are to the degree of preventing erosion effect not same.

• 空气动力学平均粗糙度与作物秸秆残茬密度和高度之间存在着很好的相关性,都近似的表现为指数函数的形式,但作物秸秆残茬密度和残茬高度对空气动力学粗糙度即防风蚀效应的影响程度却不相同。