丹江口库区石渣土土壤水分特性研究

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。

Study on the Soil Water Characteristics of the Lithosol in the Danjiangkou Reservoir Basin

The water characteristics of the lithosols with three different soil gravel ratios were studied. The study results show that there are some relationships between soil water vaporization, water retention ability, water conductivity and the ratio of soil / gravel. Among the three kinds of soils, the soil with lower gravel and higher clay had the highest water retention ability, while the soil with higher gravel and loam has the lowest. There was a positive relationship between soil water diffusivity and gravel capacity, but a negative relationship between soil water vaporization and gravel capacity.