| 摘要 |
PROBLEM TO BE SOLVED: To provide an amorphous inorganic fertilizer in which efficiency of silicate absorption is increased, an amount of the fertilizer and fertilizing labor are decreased, a stem and a leaf are reinforced, harmful bacteria like a powdery mildew fungi and harmful insects are decreased, while yield is guaranteed. SOLUTION: SiO2 in the fertilizer for the vegetable of >=50% elutes In a 4 mass% citric buffer solution (initial pH 5.5). The fertilizer whose main components are MgO, SiO2 and CaO contains MgO of 1-20 mass% and SiO2 of 30-50 mass%, preferably P2O5 of 1-12 mass%.
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