Test Study on Water and Salt Transport in Soil Transition Layer under Water Storage Irrigation Based on Big Data Technology and its Mechanism

At present, it is necessary to vigorously transform saline-alkali wasteland, dry land and coastal tidal flat to realize the balance of cultivated land occupation and compensation. In this paper, the experiment and mechanism of water and salt transport in soil transition layer under water storage irrigation are studied by combining big data technology. Moreover, based on the basic principle of water and salt balance, the numerical model of water and salt transport in vadose zone of study area under brackish water irrigation is constructed on the basis of existing data. The model is a set of numerical models for simulating water transport, heat transport, solute transport and root water uptake in one-dimensional variable saturated media. The model analysis shows that soil water and salt transport is a complex natural phenomenon under the joint action of a large number of natural factors and human factors. In addition, this paper uses normal test analysis to find out whether the salt content of each soil layer conforms to the normal distribution, and combines with big data technology to perform mechanism analysis and verify the effectiveness of this method.