| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plant growth promotor simply manufactured using a low cost raw material and used stably for a long period by solving problems that the effect of a conventional plant growth promotor has the lack of stability and reproducibility and in the manufacture, a specific technology is required. Ž<P>SOLUTION: The plant growth promotor is obtained by boiling and concentrating spring water containing germanium to increase the concentration of germanium to 0.5 mg/L or more. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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