摘要
通过对青海省农业区三种典型土壤(栗钙土、灰钙土和黑钙土)进行室内充分供水条件下的指流入渗实验,发现这三种典型土壤在层状土壤结构条件下均有指流产生,而在均质土壤结构条件下则都没有指流发生,这与西北其他地区三种典型土壤的指流实验结果非常类似。通过对国内外指流研究的最新进展进行文献分析和整理,对青海省农业区这三种典型土壤的指流发生机理进行了简要的分析。
Through the finger flow infiltration experiment about three typical soils, including chernozem soil, Chestnut soil, sierozem soil, in agricultural district of Qinghai province, under the condition of sufficient water supply, it is found that the finger flow phe- nomenon only occurs under the condition of layered soil, while not occur under the condition of homogeneous soil. This is very simi- lar to the result of finger flow experiment about three typical soils in other northwest areas. Through systematic analysis of the ad- vance of research on finger flow, the occurring mechanism of the finger flow about the three typical soils in agricultural district of Qinghai province is briefly analyzed in this paper.
出处
《节水灌溉》
北大核心
2013年第3期20-23,共4页
Water Saving Irrigation
关键词
指流
层状土壤
均质土壤
充分供水
finger flow
layered soil
homogeneous soil
sufficient water supply
