The prevention and suggestion is brought up, it is important for a good drain system for preventing soil secondary salinization, it can lowerer the underground water lever and ejecter the soil salt in order to adapt to douche and drain.

• 为了防止土壤次生盐渍化，良好的排水系统是非常重要的，它可以降低地下水位和排出土壤盐分，做到灌排配套。