| 摘要 |
A method and apparatus is given for uniformly coating particulate fertilizer material with small amounts of finely divided micro and/or secondary nutrients by forming the particulate base fertilizer material in a falling curtain, spraying the base material with a binder solution, finally mixing in an agitated bed the base material with the finely divided nutrients, thus giving a product of micro and/or secondary nutrients uniformly distributed over the surfaces of the particulate base fertilizer.
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