这部分碱化土壤一般表层碱化度较高，而巨碱化、盐化特点同时存在。
The soil surface are commonly found with a high degree of alkalization.
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说明即使淡水也是土壤盐碱化的来源。
This fact indicated that even fresh water was also salt sources in the soil.
土壤盐碱化问题是一个世界性问题。
Soil salinization is a world problem.
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