WOOD CHIP CHARCOAL, ITS PRODUCTION, FERTILIZER CONTAINING THE SAME, TREATMENT OF WASTE MUSHROOM CULTURE MEDIUM, CARBONIZATION PRODUCT OF THE SAME WASTE MEDIUM AND FERTILIZER CONTAINING THE SAME CARBONIZATION PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide wood chip charcoal having a soil amendment effect and a phosphatic fertilizer effect and the production of the wood chip charcoal and also, to provide the treatment of a waste mushroom culture medium and the carbonization product of the waste mushroom culture medium, that is obtained by the treatment. SOLUTION: Each piece of this wood chip charcoal contains a water-soluble phosphate(s) deposited on the surface or on the insides of pores. This production of the wood chip charcoal comprises adding a powdery water-soluble phosphate(s) or its aq. solution to wood chips and heating the resulting wood chips in an oxygen-deficient state to carbonize the wood chips. This treatment of a waste mushroom culture medium comprises adding a powdery water-soluble phosphate(s) or its aq. solution to the waste mushroom culture medium and heating the resulting waste medium in an oxygen-deficient state to carbonize wood chips in the waste medium.