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Van Genuchten equation is the soil water characteristic curve equation used commonly, and identifying (estimating) accurately its parameters plays an important role in the study on the movement of soil water. Selecting the desorption and absorption experimental data of silt loam from a northwest region in China as an instance, Monte-Carlo method was firstly applied to analyze sensitivity of the parameters and uncertainty of model so as to get the key parameters and posteriori parameter distribution to guide subsequent parameter identification. Then, the optimization model of the parameters was set up, and a new type of intelligent algorithm-difference search algorithm was employed to identify them. In order to overcome the fault that the base difference search algorithm needed more iterations and to further enhance the optimization performance, a hybrid algorithm, which coupled the difference search algorithm with simplex method, was employed to identification of the parameters. By comparison with other optimization algorithms, the results show that the difference search algorithm has the following characteristics: good optimization performance, the simple principle, easy implement, short program code, and less control parameters required to run the algorithm. In addition, the proposed hybrid algorithm outperforms the basic difference search algorithm on the comprehensive performance of algorithm.

Cultivation of students' IT practice and innovation capacities is an important aspect of higher learning institutes' educational reform. As one of important teaching links IT practice teaching plays a key role in training high-quality IT application talents for the modernization construction. The paper starts from strengthening financial major students' IT application capacities and makes a research in construction and reform of IT practice teaching base in higher learning institutes of finance with an emphasis on expounding the reform in construction of experimental teaching environment, practice teaching contents and methods and exploring the main methods and their effects in new talent cultivation models in higher learning financial institutes.

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