Slow-release fertilizer composition using black carbon prepared from agricultural by-products and method for manufacturing the same

摘要

The present invention relates to a method for producing a slow-acting fertilizer composition having the effect of reducing the amount of fertilization and the number of fertilizations during crop cultivation by using black carbon prepared under specific conditions and increasing the yield of cultivated crops, more specifically (a) preparing agricultural by-product black carbon, (b) 0.4-10 parts by weight of agricultural by-product black carbon prepared in step (a), 95-105 parts by weight of urea, 35-55 parts by weight of potassium sulfate, dolomite 6 Forming a mixture by mixing ~12 parts by weight in a weight ratio, (c) preparing granules in the form of granules from the mixture mixed in step (b), (d) the granules prepared in step (c) A slow-release fertilizer composition is prepared through drying and screening to prepare a slow-release fertilizer composition using black carbon.