The results show that soil samples are transitional and dispersive soil because of rich montmorillonoid, plenty of sodium-ion and strong alkalescence.

土样中含有较多的蒙脱石和钠离子以及酸碱度较高是土样产生分散性的主要原因；

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Clay is dispersed in a low salinity of the water (or pure water) because of the mutual repulsion forces ion over mutual attraction, lead to soil particles dispersive clay.

分散性粘土是一种在低含盐量的水(或纯净水)中由于离子的相互排斥力超过相互吸引力，导致土体颗粒分散的粘性土。

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The effect of scouring water on dispersive clay is very obvious, but the effect of filling water is small on the soil from Xijiao and Sanping reservoirs.

通过研究土样配制用水和冲蚀用水对针孔试验鉴定分散性粘土结果的影响。

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