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(57) Abstract: In a method of purifying a heavy metal-containing soil by planting a plant having the ability to absorb heavy metals in the heavy metal-containing soil by sowing, G represents the number of plants per 1 m 2 . The desired number of seeds, S is the number of seeds per gram of 100% pure seed, P is the purity (%) of the seed product to be sown, and R is the germination rate of the seed to be sown in the soil to be purified. (%), Equation 1: G / (S × (P / 100) × (R / 100)) A method for purifying a soil containing heavy metals, which comprises sowing seeds in an amount determined by (P / 100) × (R / 100)). [Effect] Heavy metals-containing soil can be efficiently purified. |