METHOD FOR POURING MICROORGANISM INTO SOIL

PROBLEM TO BE SOLVED: To enable efficient restoration of polluted soil, before forcibly pouring microorganisms into soil, by pouring a member for lowering a water permeability factor into soil in the upper or lower part of a pouring object area. SOLUTION: A pouring means consisting of a pouring material tank 1, a pouring pump 2, a flowmeter 3, a pouring pipe 4 having a pouring port 6, a packer 5 for setting the pouring depth, and the like, is used to appropriately pour decomposition microorganisms and a nutrient necessary for propagation/ maintaining activity thereof, an inducer, and oxygen and other chemical substances into a restoration area 9 of polluted soil. That is to say, after a water permeability factor in the upper or lower part of a soil layer is increased, by pouring microorganisms and a nutrient necessary for maintaining the decomposition activity thereof, and the like, restoration of soil is efficiently performed. When an injection material is thus poured into soil whose upper and lower parts have undergone water impermeability treatment, total poured volume, pouring time, pouring pressure, or poured flow rate, or the like, can be adjusted to pour microorganisms, and the like, into a limited area.