研究了湖北省郧县石渣土三种不同土石比土壤水分运动特性。结果表明 :土壤蒸发、持水、导水能力均与土石比大小有关。三种土壤的持水能力 ,以石砾含量较少质地偏粘的土壤最强 ,以石砾含量较多质地偏壤的土壤最低。而土壤水分蒸发能力与砾石含量呈反相关 ,土壤水分扩散率则与砾石含量呈正相关 The soil moisture movement characteristics of three different soil-rock ratios of Yunxian gravelly soil in Hubei Province were studied. The results show that soil evaporation, water holding and water conductivity are all related to the ratio of soil to rock. The water holding capacity of the three soils was the strongest in the soil with less gravel content and the lowest in the soil with more gravel content. Soil moisture evaporation capacity is inversely related to gravel content, while soil moisture diffusivity is positively correlated with gravel content