*The "Groundwater Benefit Zone", Proposals, Contributions and New Scientific Issues DOI: http://dx.doi.org/10.5772/intechopen.100299*

and effective method for studying the utilization of plant water resources in a complex system [48, 49], which provides a reference for revealing the mechanism of soil water and solute transport in the GSPAC system. In addition, the latest measurement techniques of sap flow and root system scanner (root length and root distribution) also provide ways for soil-rootwater interaction mechanism research.

4.How to combine model simulation with field control measures test, and thus propose the technical parameters of regional water-salt control? How to use soil physics model to predict the influence of groundwater salt process change on future food production and ecological environment, formulate and evaluate the adjustment strategy of the sustainable development of saline agriculture. In particular, in recent years, climate change, water shortage, and extreme climate are frequent, there is urgently needed to develop the theory and model of crop habitat process regulation and control [50], study the process of nonsaturation zone salt migration, driving mechanism and its scale-dependent effect, utilize slight saline water/saline water, farmland drainage and other non-traditional water resources in saline field irrigation safely and evaluate its ecological effects.
