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The perforated plastic mulch affects soil water movement in the heterogeneous field. Especially when soil water repellency degrees are different, the soil water movement process tends to be more complicated. Soil column evaporation experiments were conducted for Lou soil layered by sand and sand layered by Lou soil at various hydrophobic degrees under the controlled open-hole-ratio conditions. The soil water evaporation and soil moisture profiles at different conditions were measured and analyzed. The results showed that the curves of cumulative evaporation and time for full plastic mulch were obviously low, the corresponding soil moisture profile for ten days of evaporation was closed to the initial moisture profile, and this characteristic was more suitable to Lou soil layered by sand. When the open-hole-ratio increased, the cumulative evaporation of the two types of layered soil increased obviously compared with the full plastic mulch condition, showing the decreasing of mulching effects for conserving water even at small open-hole-ratios. When the water repellency degree increased, the cumulative evaporation decreased slightly, indicating the hydrophobicity of soils slowed down the water movement speed. When soil was seriously hydrophobic, hydrophobicity affected soil water movement more than open-hole-ratios. Logarithmic functions fit well for describing cumulative evaporation and time of various hydrophobic degrees of Lou soil layered by sand, while power functions and logarithmic functions were selected for sand layered by various hydrophobic degrees of Lou soils.