粉煤灰和城市污泥配施改良荒漠土壤的持水性影响研究  

An Study on the Water-Holding Capacity of the Soil Improved With Coal Ash and Sewage Sludge

作　　者：霍晓君[1] 李祯[1] 李胜荣[1] 申俊峰[1] 曹鑫罡[2] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室 [2]内蒙古包头市环境科学研究院,内蒙古包头014010

出　　处：《干旱区资源与环境》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)

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.

关 键 词：粉煤灰 城市污泥 持水性能 荒漠土壤 

分 类 号：X7[环境科学与工程—环境工程]