| 摘要 |
PROBLEM TO BE SOLVED: To manufacture and provide a soil improving material for agriculture, and a culture medium for agriculture and gardening using the same from a lime sludge which is produced with the mining of lime and dolomite and abandoned, and cut rubbles of Oya stone which also are sparingly utilized, as well as to alleviate the problem of waste treatment. SOLUTION: The soil improving material is manufactured by mixing 30-90% (based on weight) of the lime sludge and 10-70% of the cut rubbles of Oya stone and granulating. The granulation is preferably conducted by a rolling method, using a fermented waste liquid containing organic substances as a binder. The culture medium incorporates 10-40%; of the lime sludge, 10-50% of the cut rubbles of Oya stone, and 20-60% of a red soil or a black soil. The culture medium is preferably sterilized with heat. The granulation followed by baking gives strength and good appearance. COPYRIGHT: (C)2004,JPO |
