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铁岭市３°～１５°坡耕地面积为１４９８４ｋｍ２，存在着不同程度的水土流失。为探讨坡耕地水土流失规律、制定治理措施，应用模拟降雨装置，采用复因子试验设计进行研究。试验因子为：降雨侵蚀力Ｒ、坡度θ、雨前土壤含水量Ｗ、作物覆盖水平Ｃ。测试结果表明，４因子对径流的影响依次为Ｒ＞Ｗ＞θ＞Ｃ＞Ｒθ＞ＣＷ＞ＲＷ，对土壤冲刷量的影响依次为：Ｒ＞θ＞Ｃ＞Ｗ＞Ｒθ＞ＲＷ。根据测试结果，可针对可控因子，科学地制定治理措施，同时为水土保持规划及决策，提供了科学依据。
Tieling City, 3 ° ~ 15 ° sloping farmland area of 1498 4km2, there are varying degrees of soil erosion. In order to discuss the law of soil and water loss in sloping fields, the measures of harnessing and controlling were put forward. Simulated rainfall units were used and the complex factor experiment design was adopted. The test factors are: rainfall erosive force R, slope θ, soil moisture W before rainfall, and crop cover level C. The test results showed that the influence of four factors on runoff was R> W> θ> C> Rθ> CW> RW, and the influence on soil erosion was R> θ> C> W> Rθ> RW. According to the test results, we can scientifically formulate control measures for controllable factors and provide a scientific basis for soil and water conservation planning and decision-making.