Slow-release phosphorus fertilizer containing humic acid-metal-phosphate compound and preparation method thereof
The invention provides a slow-release phosphorus fertilizer containing the humic acid-metal-phosphate compound and a preparation method thereof and relates to the production technology of the fertilizers. The preparation method of the slow-release phosphorus fertilizer comprises the following steps:...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a slow-release phosphorus fertilizer containing the humic acid-metal-phosphate compound and a preparation method thereof and relates to the production technology of the fertilizers. The preparation method of the slow-release phosphorus fertilizer comprises the following steps: step one, mixing a humic acid fertilizer and a phosphorus fertilizer according to a mass ratio of (60-90) to (5-25), and adding a metal solution accounting for 2-5% of the total mass of humic acid and the phosphorus fertilizer; and step two, fully and uniformly mixing the humic acid fertilizer, the phosphorus fertilizer and the metal solution prepared in the step one, and regularly replenishing water. A proper amount of metal solution is added during mixed application of the humic acid and the phosphorus fertilizer; the prepared humic acid slow-release phosphorus fertilizer is capable of improving physical and chemical properties, improving fertilizer efficiency and simultaneously achieving the purposes of slowly |
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