| 摘要 |
PROBLEM TO BE SOLVED: To obtain charcoal-containing granules without causing clogging occlusion, excellent in shape-maintaining property and water absorbing property on watering, capable of reducing the watering work in agricultural work and useful for growing seedlings, cultivating, etc., of a crop by compressing for granulating the charcoal. SOLUTION: The charcoal-containing granules contain the charcoal and further preferably a plant-based fibrous material such as a coconut husk, and are obtained by subjecting the above materials under a compression force or the compressing force with a shearing force for forming compressed granules. They have 3-6 mm maximum granule length and 0-20 wt.% water content. Further, it is preferable to use the charcoal: plant-based fibrous material = (99/1)-(50/50) ratio, and to add a slowly available fertilizer of which solubility is chemically adjusted or of which eluting rate is physically adjusted, to the charcoal-containing granules. Also it is preferable to perform the growth of seedlings and cultivation of a crop by using the cultivating medium containing the charcoal-containing granules. |
