Quality Analysis of Commercial Phosphate-solubilizing Bio-fertilizer Products

高品質的微生物肥料才能在田間提高植物營養元素的吸收及促進植物生長，而政府的品質管控有助於微生物肥料產品在田間獲得更好和更一致的結果，而且還可以從市場上去除品質差的產品，進而提高農民的信心。本文將介紹農業試驗所於 2017 年與 2018 年購買市面上販售的溶磷菌肥料產品，進行溶磷菌有效活菌數、雜菌率、溶磷環、溶磷活性及菌種鑑定，其檢測方法參考農糧署公告的微生物肥料檢驗項目之檢驗方法。由 2017 年檢測結果可知，農業試驗所由市面上購得的 14 個溶磷菌肥料產品只有 5 個皆符合農糧署微生物肥料規定，合格率為36%。由 2018 年檢測結果可知，16 個市售溶磷菌肥料產品只有8個皆符合農糧署微生物肥料規定，合格率為 50%。上述檢測結果為國內微生物肥料產品上市以來第一次全面性的微生物肥料產品之品質分析，該分析資料可提供農糧署在微生物肥料產品品質管控以及未來微生物肥料法規修改之參考。 Only bio-fertilizers with good quality can assure its promotion in plant nutrients absorption and growth in the field, and the supervision of product quality from government side could play another key role not only in helping bio-fertilizers provide a better and consistent results in the field, but also in eliminating products with bad quality. Both efforts could enhance the farmers’ confidence in these microbial products. In this report, all of the analysis results of commercial phosphate-solubilizing bio-fertilizers, purchased from markets from 2017 to 2018 were documented. The scope of product analysis included total plate count of viable microbes, contamination rate, phosphate-solubilizing zone, phosphate-solubilizing activity, target species identification. All of methodologies followed the publications by Agriculture and Food Agency (AFA). In 2017, only 5 among 14 commercial products (36%) met the requirements by AFA . In 2018, only 8 among 16 commercial products (50%) met the requirements by AFA. This is the first product quality report about commercial phosphate-solubilizing bio-fertilizers. This result will be submitted to AFA and referred to revise the management law of bio-fertilizers in the future