摘要
本文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改良荒漠土壤对持水性能的影响。研究结果表明,施用粉煤灰和城市污泥改良后的土壤饱和含水率比对照荒漠土壤提高了79.46%,持水时间提高14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。
To study the water “holding capacities of desert soil and the soil improved 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 improved soil was much higher than that of the desert soil （about 1.95 times） and the water-holding time of the improved soil was prolonged for 7 days more than that of the desert soil. This result is of significance theoretically in desert soil improvement for forestplanting.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2005年第6期168-172,共5页
Journal of Arid Land Resources and Environment
基金
中国教育部博士点基金项目(20030491010)
关键词
粉煤灰
城市污泥
持水性能
荒漠土壤
coal ash
sewage sludge
water-holding capacity
desert soil
