| 摘要: |
| 通过对高钠盐渍土的形成、特性及分散性机理的分析，认为双比重计试验、孔隙水可溶盐试验和交换性钠百分比试验鉴定标准不适宜于高钠盐渍土，应当对判别标准进行修订。在现阶段，判别高钠盐渍土的分散性应以针孔试验和碎块试验的判别结果为主，而以双比重计试验、孔隙水可溶盐试验和交换性钠百分比试验的试验结果作为参考。 |
| 关键词: 高钠盐渍土 分散性 判别标准 标准修订 |
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| 基金项目:国家“863”节水重大专项“新型高效雨水集蓄与利用技术研究”部分内容(2002AA2Z4051-2) |
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| Discussion on dispersivity of high-sodic saline soil |
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| Abstract: |
| This paper discusses the formation and characters and dispersive mechanism of high-sodic saline soil,and concluds that identifiable standards of double-hydrometer test,pore water salts test and exchangeable sodium percent can not be used to identify dispersive characters of the high-sodic saline soil and should be modified.At present the results of pinhole test and crumb test are prior to deciding the dispersivity of the high-sodic saline soil,but the results of normal double-hydrometer test,pore water salts test and exchangeable sodium percent can be referred to. |
| Key words: high-sodic saline soil dispersivity standard of judgement modification of standard |
