灌溉及地下排水试区含盐粘壤土的脱盐作用

• 作 者: T.G.Sommerfeldt C.Chang 单光宗
• 出 处: 土壤学进展
• 发表日期: 1989年03期
• 关键词: 地下排水 脱盐作用 粘壤土 管道排水 排水渠 试验小区 排水工程 土壤脱盐 土壤改良 脱盐

非管道地下排水和管道地下排水是Alberta南部常用的一种土壤改良排水工程。作者研究了两种排水条件下,灌溉对含盐粘壤土脱盐的影响。深度为0.7m的管道地下排水及非管道地下排水区,在6年内,约50%的试验小区60cm表土层的平均电导率(EC),已从大于8dsm~(-1)降低到小于4dsm~(-1),小区0-60cm和0-180cm深度的土层范围内平均EC值,随时间延长而呈对数递减。本文重点讨论了采用上述两种排水时,土壤脱盐的速率及相关系数。

Non-Pipeline Drainage and Pipeline Drainage is a commonly used soil remediation drainage project in southern Alberta. The authors studied the effect of irrigation on desalination of salt-loamy clay under two drainage conditions. The depth of 0.7m pipeline underground drainage and non-pipe underground drainage area, within 6 years, about 50% of the test area 60cm surface soil average conductivity (EC), from more than 8dsm ~ (-1) to less than 4dsm ~ (-1), 0-60 cm in depth and 0-180 cm in soil depth. This article focuses on the rates and correlation coefficients of desalination of soils using these two types of drainage.