| 摘要 |
PROBLEM TO BE SOLVED: To provide a process for producing a liquid organic fertilizer which makes it possible to obtain soil which can be preserved for a long period of time and does not require the restoration of fertility. SOLUTION: Alcohol lees 7 are recovered as the basic raw materials for the liquid organic fertilizer. The alcohol lees 7 are concentrated to 3.5 times the original concentration, by which a lees concentrate 8 is obtained. While the alcohol lees 7 contain a large amount of carbon organic materials and a trace amount of many other elements, the per cent of their nitrogen compound, phosphorus compound and potassium compound is too low in order for the direct use thereof as the liquid fertilizer and, therefore, the lees concentrate are mixed at a ratio of 4:1 with the additive raw materials 9 including nitrogen, phosphorus and potassium. The additive raw materials 9 contain lysine. The lysine stabilizes the liquid organic fertilizer. As a result, the liquid organic fertilizer has the resisting force to temperature and pressure. Consequently, the contents of the liquid organic fertilizer do not induce a chemical change and allow the long-term preservation when the liquid organic fertilizer is packaged or transported.
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