The invention discloses a sand control method using modified sand soil for
tree planting. The modified sand soil as a basis of the growth of trees is paved on sand which is to be controlled. The modified sandy soil is formed by stirring and mixing of a solution having a
caking property and adhesivity and sandy soil, wherein the solution is formed by dissolving water-soluble
solid organic matters in water. After the water is evaporated, the water-soluble
solid organic matters can conglutinate grains of the sand soil, and when the water-soluble
solid organic matters meet the water, the solid organic matters can again dissolve in the water to form the solution having the
caking property and adhesivity, and the grains of the sand soil are conglutinated. Through use of the modified sandy soil, interaction relationship among the grains of the sand soil can be fundamentally changed, and a grain-pore structure having bonding force (cohesive force) is formed. Trees can be directly planted in the modified sandy soil. In the course of use of the modified sandy soil, matters are hard to lose due to the characteristics of the
caking property and adhesivity, so that the modified sand soil has soil-like stability and water and
nutrient storing properties, can be directly used as a basis of
tree planting, can provide solid conditions for
plant growth, and is an ideal measure for sand control.