在美国南部高原半干旱地区,应用了38年的作物残余物资料,用风蚀方程评价了六种作物残余物控制风蚀之效果.结果表明:作物及其残余物有减小土壤风蚀的潜力.[当C=70,I=193吨/公顷,L=914米,K=0.7时]卡菲尔高粱、饲料高粱、冬小麦、食用高梁、玉米和棉花相应的年保土量依次为:12,15,39,43,77和83吨/公顷. In the semi - arid area of ​​the southern plateau of the United States, 38 years of crop residue data were used and wind erosion equations were used to evaluate the effectiveness of six crop residues in controlling wind erosion. The results show that crops and their residues have the potential to reduce soil wind erosion [ The annual soil conservation amounts of Kafir sorghum, forage sorghum, winter wheat, edible sorghum, maize and cotton when C = 70, I = 193 t / ha, L = 914 m and K = 0.7 were 12 and 15 , 39, 43, 77 and 83 tonnes / ha.