【摘要】 根据室内水平土柱吸渗法和易混合置换试验,对石河子垦区灌耕灰漠土饱和-非饱和土壤水动力弥散进行试验,通过理论分析和计算,得到了非饱和土壤水分扩散率和水动力弥散系数及饱和条件下的溶质弥散度,结果表明,规律性较好,且有较好的重现性,说明方法是可行的,测定数据有较好的应用参考价值。更多还原

【Abstract】 Horizontal infiltration experiment and miscible displacement experiment were carried out to determine hydrodynamic dispersion coefficients in saturated-unsaturated soils in Shihezi irrigated areas.Through theoretical analysis and calculation,the soil water diffusivity and hydrodynamic dispersion coefficient under unsaturated soil and dispersivity under saturated soil were obtained.The results showed the regularity and repeatability of data were good.The experimental methods are feasible and the results have good application and reference values.更多还原