METHOD OF CULTIVATING CROP WITHOUT USING AGRICULTURAL CHEMICAL, AND SOIL IMPROVEMENT AGENT FOR USE THEREFOR

摘要

PPROBLEM TO BE SOLVED: To provide a clean method of cultivating a crop excellent in its yield, taste, color, size and the like regardless of using no agricultural chemical. PSOLUTION: (1) A liquid soil-improvement agent (a mother liquid) is prepared by mixing a prescribed amount of water containing microbubbles, particularly water containing micronano bubbles and an extremely small amount of a liquid extract from reddish yellow soil. (2) A solution diluted by 50 times, of the mother liquid of the soil-improvement agent is sprayed over a cultivated field of a prescribed area three times at an interval of two to three days to enhance the base substitution capacity of the soil. (3) An intended crop is grown in the cultivated field as improved above, and a solution diluted by 20 to 50 times of the mother liquid, or the mother liquid itself is sprayed over the faces of the leaves and to the stumps of the crop once or twice a month at an interval of ten days. PCOPYRIGHT: (C)2010,JPO&INPIT