Simulation Study on Vertical Salt Leaching System in Shule Irrigation District
With large area and wide distribution,saline soil has become one of the important causes for land desertification in Shule River Basin.Using numerical simulation method by building soil water-salt transport model,vertical salt leaching system was studied.The results showed that,72 h after the first leaching and 60 h intervals for other leaching times could dissolve salt in a maximal degree and prevent salinization effectively.The desalinization ratio reached to 91.3% while the leaching water for the first time was controlled within saturated water content and increased for other times subsequently.The desalinization amount of per cubic meter of TYD3 was 0.0025% higher than TYD4.It showed that contribution rate for too much leaching water was small.The salt leaching system of different salt content was established in Shule River Irrigation District.
Shule River Irrigation DistrictSaline soilSalt leaching system
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