| abstract |
(57) [Problem] To provide a soil base material that can be used as an organic fertilizer or the like having an excellent plant cultivation effect, and can be produced at low cost by effectively utilizing waste. SOLUTION: A soil base material is manufactured by adding microorganisms to a raw material mixture containing bark compost, sludge, black soil, livestock manure, charcoal and shell incineration ash as essential components, and fermenting and maturing the raw material mixture. |