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通过观测天然降雨时不同带宽玉米苜蓿间作下黄土坡耕地降雨产流产沙特征,研究了降雨条件一定时不同耕作模式对黄土坡耕地产流产沙量的影响和坡度变化对坡耕地产流产沙的影响。结果表明：在5°、10°、15°坡试验径流小区上①玉米单作年均产流总量分别比裸地降低了29.2%、15.8%和12.2%;苜蓿单作年均产流总量分别比裸地降低了78.5%、73.5%和75.0%;玉米苜蓿间作下年均产流总量分别比裸地降低了71.8%、59.7%和59.1%。②玉米单作年均产沙总量分别比裸地降低了39.0%、29.9%和22.0%;苜“,”Through observing characteristics of runoff and sediment yield after rainfall on loess slope land under different strip width intercropping maize with alfalfa,the influence of different tillage modes and slope change on runoff and sediment yield under the