| 摘要 |
<p>In a site of, for example, composting organic wastes, the germination index of a fertilizer can be accurately estimated and the qualities of the fertilizer such as the extent of maturation are quickly, conveniently and highly accurately evaluated. At least two factors selected from the physicochemical indexes and enzymatic activities of an extract of a fertilizer to be evaluated are obtained. Then, these factors are assigned to definite numerical formula to estimate the germination index of the fertilizer. The definite numerical formula as described above is a multiple regression formula obtained by a multiple-regression analysis on the germination indexes and the above-described factors of fertilizers similar to the fertilizer to be evaluated. The physicochemical index(es) as described above mean at least one factor selected from the group consisting of pH, ammonium ion concentration, nitrate ion concentration, electrical conductivity, temperature and redox potential. The enzymatic activities as described above are enzymatic activities indicating microbial activities.</p> |
