Direct Characterization of Organic Fertilizer Ripeness Based on Fluorescence Spectroscopy
"Organic Fertilizer"(NY/T 525-2021)enhances the maturity criterion and indirectly assesses it through the seed germination index;however,a more direct approach is still warranted for improved operational efficiency.The objec-tive of this study was to investigate a more direct approach for evaluating the maturity of decay in organic fertilizer by emplo-ying fluorescence spectroscopy analysis.Through the examination of soluble organic matter(DOM)extracted from nine dis-tinct types of organic fertilizers,the fluorescence spectroscopy analysis revealed that animal-derived organic fertilizers gen-erally exhibited lower humus content compared to plant-derived ones,yet demonstrated some level of humification.The uti-lization of three-dimensional fluorescence spectroscopy of DOM(3DEEM)combined with FRI and PARAFAC analysis ef-fectively characterized the extent of humification in organic fertilizers.Furthermore,the fluorescence spectroscopy analysis enabled a quantitative assessment of the degree of humification in these fertilizers,thereby establishing a direct basis for e-valuating their quality.
万方数据
维普
