The ke it is and the Acid quality fertilizer or the ke is one grain mixed fertilizer null of the Acid adding village

摘要

PROBLEM TO BE SOLVED: To obtain an one granule mixture fertilizer good in collapsibility in water and soil by mixing the powder of a silicic fertilizer or potassium silicate fertilizer with shell, mixing and kneading the mixture with a water-soluble binder and subsequently granulating the kneaded product into spherical granules having a prescribed granular diameter. ;SOLUTION: Shell comprises one or more kinds of shells selected from among oyster shell, scallop shell, pearl oyster shell, Tapes philippinarum shell, etc., finely ground and subsequently mixed with a silicic fertilizer or a potassium silicate fertilizer. The mixture is further mixed and kneaded with a water-soluble binder and subsequently granulated into spherical granules having a granular diameter of 1-4mm. The silicic fertilizer includes a wollastonite fertilizer, a stag silicic fertilizer and lightweight gas concrete. The water-soluble binder includes sodium lignin sulfonate, the concentrated solution of Steffen waste water, and an alcohol fermentation waste solution. The lignin compound is the best from view points comprising the easiness of granulation and collapsibility in water and soil. For example, the wollastonite fertilizer and the oyster shell are mixed in a weight ratio of 8:2 by the use of a blender.;COPYRIGHT: (C)1997,JPO