CULTURAL BED SOIL MIXED RARE EARTH ELEMENTS-CHELATING COMPLEX AND THE METHOD FOR PREPARING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide rare earth compound-added agricultural bed soil of functional and environmentally-friendly type, and to provide a method for producing the same.

SOLUTION: This agricultural bed soil is obtained by mixing a rare earth chelate compound with ordinary bed soil in a sole or mixed form, wherein the rare earth chelate compound is obtained by forming chelate bonding of one or more organic acid salts selected from various kinds of organic acid salts to one or more substances selected from rare earth elements. The rare earth chelate-added agricultural bed soil accelerates growth of a crop, decreases a nitrate-nitrogen content in the crop, decreases an amount of a residual agrochemical therein, further decreases accumulation of the rare earth element in the soil by increasing an absorption and translocation ratio of the rare earth element into a plant body, and furthermore accelerates growth of a plant.

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