| 摘要 |
PROBLEM TO BE SOLVED: To obtain a permanent magnet for plant activation having plants growth promoting activity, quality retaining properties of cut flowers and improving the quality of fruits and rooting rate of engrafting, in which the N poles and S poles are arranged alternately, having a magnetizing pattern consisting of plural poles and prescribed poles width. SOLUTION: This magnet has a magnetizing pattern having N poles and S poles are alternately arranged and composed of at least 3 poles and the width p of the poles is in the range of 1-20mm. This permanent magnet 1 for plant activation is obtained, for example, by kneading 100 pts.wt. of natural rubber, 40 pts.wt. of barium-ferrite particle powder and 2 pts.wt. of stearic acid as assistant processing agent, formed and magnetized to manifest the density of leakage flux to 50 gauss by a magnetizer. |
