| In order to discuss the applicability of one dimensional algebraic model on amelioration of sandy saline alkali soil, taking the PAM and the Handilong amelioration agents as the material, set up three amounts as PAM (0.01%, 0.04% and 0.08%) and Handilong (75 g·m-2, 150 g·m-2 and 375 g·m-2), one dimensional infiltration experiment was conducted in laboratory. The results showed that: Added the chemical amelioration agent will be played the function as reduced the infiltration in sandy saline alkali soil. The soil water moving parameters of the one dimensional algebraic model can be derived from the experimental measured data. The soil saturated hydraulic conductivity Ks was shown the trend at first reduce and later increase with increasing the amount of amelioration agent, compared with the control treatment, the average reduce ratio were 36.9% and 35.71% respectively for the PAM and Handilong. However, the model integrated form factor α showed an increasing-decreasing trend with increasing the amount of amelioration agent. The suction coefficient β was not obvious change with the type and increasing amount of amelioration agent. In the model applicability test, the maximal relative error were -4.66%, -9.81% respectively for the PAM and Handilong treatment, and the relative error of other treatment was total less than 5%. So it indicated that this model can be effectively described the infiltration process of sandy saline alkali soil by added amelioration agents condition, also this model’s applicability was rather good in adding PAM process. |