【摘要】 通过模拟降雨及降雨后自然条件下的土壤表面水分蒸发,研究了粉煤灰和城市污泥配施对荒漠土壤持水性能的影响。研究结果表明,施用粉煤灰和城市污泥后的土壤饱和含水率是对照荒漠土壤的1.95倍,持水时间提高7天左右。这对于在干旱缺水的荒漠地区进行植树造林,恢复生态环境,提高有限的水资源利用率,防止荒漠化的扩大具有十分重要的理论指导意义。更多还原

【Abstract】 To study the water-holding capacities of desert soil and the soil amended with coal ash and sewage sludge, experiments were designed to simulate rainfall and natural evaporation. The result indicated that the water-saturation coefficient of the amended soil was much higher than that of the desert soil (about 1.95 times) and the water-holding time of the amended soil was 7 days longer than that of the desert soil. This result is of theoretical significance in improving desert soil for forest-planting.更多还原