论文部分内容阅读
采用一次回归正交组合设计 ,利用野外人工模拟侵蚀降雨试验对辽西黄土丘陵区坡耕地土壤侵蚀进行了研究 ,探明了影响该区坡耕地土壤侵蚀的主要因子依次是降雨侵蚀力 (R)、雨前土壤含水量 (W)、作物盖度 (C)和地面坡度 (S)及其作用机理 ,根据试验结果建立了土壤侵蚀预测数学模型 ,为坡耕地土壤侵蚀的计算、预测及防治提供了可靠的技术手段和理论依据
A regression orthogonal design was used to study the soil erosion of sloping farmland in the loess hilly region of western Liaoning by artificial simulated rainfall experiment. The main factors influencing the soil erosion in sloping farmland were rainfall erosivity (R) Soil moisture (W), crop coverage (C), slope (S) and its mechanism of action before rainfall were established. Based on the experimental results, a mathematical model of soil erosion prediction was established, which provided the basis for calculation, prediction and control of soil erosion on sloping farmland Reliable technical means and theoretical basis