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Study of the Tangshan Nanpu saltworks severe saline land , using different sets Tin site preparation , laying the isolation dark layer and laying drainage measures to rehabilitate the test ground to Summary table field of water and salt , by and continuous the observation station Tin moisture and salt content , dynamic variation , thus fitting result for the coastal muddy saline-alkali land preparation and drainage measures . The study found that the Taiwan - field soil salinity and water content are negatively related , and the correlation is significant . Changes in the salinity of the year decreases and then increases , while the water content showed the opposite trend , to reach extreme value in July and August . Taiwan Tin site preparation , the laying of the isolation layer , with drains discharge salt the salt barrier effect significant soil conductivity decreased by about soil preparation before 10.76ms/cm to 4-7ms/cm between the salt content reduced significantly over Year three fields built five years the is also stable 5ms/cm , by the heavy salinized soil into salinization of soil . Isolated dark layer is a good drainage resistive salt medium , can effectively rule out deep soil moisture muddy saline-alkali soil , and prevent soil salinity upstream inhibition of salt accumulation . After the comparison , two north-south \Salt drainage effect of the isolation layer of the different materials was no significant difference .
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