Abstract

In order to reveal the discipline of water and salt transport in storage condition, Hydrus model is used to analyze numerical simulation of water and salt transport in storage condition, studied soil salinity migration of the arable layer in storage condition, compared the simulation results with the measured. Revealed the cyclic pressure salt mechanism in storage condition, it related to water level and concentration. The results showed that the water level raising, salinity concentration lowering, reduced the salt of soil surface, maked the soil salinity downward pressure salt from top to bottom; and the water level lowering, concentration increasing, salt transport to the soil saturated layer, while the salt of non-saturated layer desalinated gradually. Ensured the plough horizon to the good development.

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