| 摘要 |
PROBLEM TO BE SOLVED: To obtain a mixed fertilizer effectively utilizing the scrap or the like of a cement based inorganic plate such as external wall materials and containing elements necessary for plant growth by constituting so as to mix the pulverized material of the specific cement based inorganic plate with an organic fertilizer by stirring. SOLUTION: This mixed fertilizer is constituted so as to mix the pulverized material of the cement based inorganic plate containing a soluble silicate (e.g., calcium silicate and magnesium silicate), which has preferably <=210μparticle diameter, with the organic fertilizer by stirring in the mixed ratio of the pulverized material of the cement based inorganic plate to the organic fertilizer, 8:2 to 2:8. That is, the cement based inorganic plate contains SiO2 , CaO, MgO, Fe2 O3 and the like, which are active ingredients of cement, and the soluble silicate is formed by the components and contained. |
