| 摘要 |
PROBLEM TO BE SOLVED: To obtain an inexpensive granular fertilizer composition having an excellent function to prevent floating on a water surface and an ability to prevent consolidation for a long period of time. SOLUTION: The granular fertilizer composition is produced by subjecting the surface of the granular fertilizer to coating treatment with mineral product powder and at least one kind selected from a phosphoric acid liquid, sulfuric acid liquid and nitric acid liquid. The coverage of the mineral product powder to the granular fertilizer is 0.1 to 3 wt.% and the coverage of at least one kind selected from the phosphoric acid liquid, the sulfuric acid liquid and the nitric acid liquid is 0.05 to 1 wt.% phosphoric acid liquid as H3 PO4 , sulfuric acid liquid as H2 SO4 and nitric acid liquid as HNO3 .
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