景泰灌区土壤次生盐渍化浅析

Analysis of Secondary Salinization of Soil in Jingtai lrrigation Area

本文研究了景泰灌不同含盐量土壤次生盐渍化的形成和灌水前后土壤盐分的变化,总结出灌区土壤返盐和脱盐过程与灌水周期、作物种类、耕作管理等条件的关系,初步提出封闭型氯化物—硫酸盐盐土的水利防治措施。

The formation of secondary salinization in soil with different salt content and the variation of salt con- tent just before and after irrigation were studied in Jing- tai irrigation area.The processes of salt accumulation and desalination in the surface soil were brought to light.Some water conservation measurements were preliminarily put forward to prevent and control the sulphate-chloride salty soil.