| 摘要 |
PROBLEM TO BE SOLVED: To provide a mixed organic fertilizer which essentially comprises livestock excretion, has a good balance among fertilizer components, shows little washout after its application because it contains a citric acid-soluble phosphoric acid component, is excellent in mid- and long-term fertilizing effects and handleability and requires no top-dressing. SOLUTION: The phosphoric acid-added mixed organic fertilizer is prepared by adding a phosphoric acid substance, which contains the citric acid-soluble phosphoric acid and has a pH of 4.4-6.0, to the livestock excretion. For example, a powdery phosphoric acid substance, which has a citric acid-soluble phosphoric acid content of≥25%, a water-soluble phosphoric acid content of≤70% and a pH of 4.7-6.0, is added to the livestock excretion. COPYRIGHT: (C)2006,JPO&NCIPI
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