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运用川中丘陵区四种土壤母质类型5个观测点历年的数据,定义了可蚀模数和产流模数,通过关联和曲线回归分析,阐明旱作制抗水蚀的能力为聚土免耕>横坡种植>顺坡种植;坡旱地的侵蚀量 Q 和径流深 Z 与降雨量 R 的最佳回归关系:Q=a+b1nR 和 Z=A十BR定量描述了坡地旱作制下的水土流失特征。通过比较曲线方程确定了聚土免耕、横坡种植和顺坡种植的 P 值分别为0.29,0.49和1。结果得出,坡地旱作制下的土壤侵蚀方程应修正为:Q=K(t).C(t).P.S.L·ln(R-c请下载后查看，本文暂不支持在线获取查看简介。(a/b)。
Based on the data of five observation sites of four kinds of soil parent material types in the hilly region of Sichuan Basin in the past years, the erodable modulus and runoff modulus were defined. Through the correlation and curve regression analysis, the ability of drought- Slope slope planting> slope slope planting; and the best regression relationship between erosion Q and runoff depth Z and precipitation R of slope dry land: Q = a + b1nR and Z = A + BR quantitatively describe the soil and water loss under sloping dryland feature. By comparing the curve equations, the P values of no-tillage, slope planting and slope planting were 0.29, 0.49 and 1 respectively. As a result, the equation of soil erosion under sloping cropping system should be revised as: Q = K (t) .C (t) .PSL-ln (Rc / b).