| 摘要 |
PROBLEM TO BE SOLVED: To obtain a growth promoter for hydroponics, with which a plant is greatly grown by hydroponics. SOLUTION: This plant growth promoter comprises a compound material consisting of white marble or its mixture, a resin to be hardly charged with static electricity and a minus ion releasing mineral substance. Consequently, the plant growth promoter exhibits effect of greatly growing plants in hydroponics by activation of plant cells and enhancement of absorption ability of water and nutrients and can extend the terms of flower cultivation and extension of blooming seasons of flowers and can reduce a cost even in distribution stages and admiration stages. |
