均质土壤及层状土壤的指流对比实验  

Comparative Experiment of Finger Flow of Homogeneous Soil and Layered Soil

作　　者：拦继元[1] 李怀恩[2] 史文娟[2] 张建丰[2] 王智[3] 

机构地区：[1]青海师范大学化学系,西宁810008 [2]西安理工大学水利水电学院,西安710048 [3]加利福尼亚州立大学Fresno分校地学与环境科学系

出　　处：《节水灌溉》2009年第11期53-55,70,共4页Water Saving Irrigation

基　　金：陕西省重点实验室访问学者专项计划项目(05JF11);教育部高等学校优秀青年教师教学科研奖励计划项目(2001-282)

摘　　要：为了彻底认识指流的发生原因及变化规律,以我国西北地区分布较为广泛的3种土壤(西峰土、榆林土、新疆沙土)为实验对象,对均质土壤和层状土壤进行室内充分供水条件下的指流实验,发现层状土壤均有指流产生,而均质土壤则没有指流发生,并对其原因进行了简要分析。To fully explore the reason of finger flow and its change law, taking three kinds of soil, which is wildly distributed in northwest of China, as experiment material, the finger flow experiment of layered soil and homogeneous soil under the condition of sufficient water supply indoor is conducted in this paper. The results show that all layered soil have finger flow phenomenon but homogeneous soil have not finger flow. The reason is simply analyzed in the end.

关 键 词：指流 层状土壤 均质土壤 

分 类 号：S157.1[农业科学—土壤学]