More particularly, the present invention relates to a salt-barrier composition for preventing the infiltration of saline, and more particularly, to a method for inhibiting the inflow of sodium ions into sea water, To a salt-barrier composition for preventing penetration of saline using a porous hygroscopic material and an water-absorbing polymer, and a method of salt-freeze planting using the same. The salt barrier composition according to the present invention comprises 10 to 50 wt% of bottom ash, 5 to 40 wt% of waste activated carbon, 1 to 20 wt% of desulfurized gypsum, 1 to 20 wt% of crushed stone powder, 1 to 20 wt% of zeolite, 0.1 to 10% by weight of sodium sulfate, 0.1 to 10% by weight of yellow clay, 0.1 to 20% by weight of methyl cellulose, 0.1 to 20% by weight of starch, 0.01 to 10% by weight of water reducing agent, 0.01 to 10% by weight of water reducing agent, and 0.1 to 20% by weight of water. The salting-off method of the present invention is characterized in that the salting surface is formed by excavating the salted soil in a depth of several thousand meters, a small river stream or the direction of the gutter thereof, and the number of thousands of small- Forming a tibia facing their branch line; Forming a salt barrier layer on the excavation surface to form a salt barrier layer; Forming a geotextile layer on top of the salt barrier layer to cover the geotextile; Installing a porous pipe in an upper part of the geotextile layer along an excavation surface and installing a porous pipe in the tibia so as to be connected to the porous pipe; Forming an aggregate filter layer by laying an aggregate on the upper portion of the porous pipe to serve as a filter; Forming a geotextile layer on the aggregate filter layer, laying a salt barrier composition on the aggregate filter layer, laying the land soil in an amount considering the size of the tree to be planted, forming a planting layer in a predetermined amount, Filling the remaining excavation surfaces except for the plant material layer, and planting trees in the plant material layer.
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