农业耕作措施减沙的能量分析

The Analyzes of Tillage Measure Conserve Soil in Energy

从径流能量入手,在室内人工降雨试验的基础上,分析了坡面耕作措施对径流能量的削减作用。耕作措施可有效减少坡面产流、产沙,其径流能量消减率可达26.84%～51.58%,在径流能量传递过程中,3种耕作措施能量传递均小于对照,其中等高耕作对径流能量消减率最大,减沙作用与径流能量消减之间呈对数关系,耕作措施对径流能量的消减作用受雨强和坡度的影响,随雨强和坡度增大,消减作用减弱。

This article obtains from the runoff energy, in the room in the artificial rain experiment foundation, analyzed the slope tillage measure to the runoff energy reduction function. The tillage measure may effectively conserve water and soil, its runoff energy reduce rate may reach 26.84% -51.58%. In the runoff energy transfer process, 3 kind of tillage measure energy transfer all is smaller than the comparison, the energy reduce rate of contour tillage is the biggest. The benefit to soil conservation and the energy reduce rate of contour tillage becomes the logarithm relates. The rain intensity and slope increases, the function weakens.