In areas which are prone to salinization-alkalization and water-logging, measures shall be taken to control and lower th在容易发生盐碱化和渍害的地区，应当采取措施，控制和降低地下水的水位。
The principle of alkalization treatment for silicon cleaning technology and the practice on 2×300 MW units in Pingliang 摘要介绍碱化处理洗硅工艺的原理及平凉电厂2×300MW机组的洗硅实践。