| 摘要 |
PURPOSE:To provide a soil conditioner which is excellent in germination- promoting and root-developing facilitating actions on a speed and healthy feeding action on a seedling by mixing pulverized particulate granite porphyry, granite, feldspar and silica stone in a specific weight ratio. CONSTITUTION:The collected granite porphyry, granite, feldspar and silica stone are pulverized into particles. A soil conditioner is produced by mixing 40 to 60wt.% granite porphyry, 10 to 20wt.% granite, 10 to 20wt.% feldspar and 15 to 25wt.% silica stone such that the sum of them accounts for 100wt.%. The soil environment is improved by mixing the soil conditioner with the soil in the fields, which enable the stable supply of agricultural products of healthy and good qualities. |
