利用日日春及小胡瓜作為溶磷菌肥效評估可行性研究

Abstract

國內目前微生物肥料尚無肥料效果及活性指標規範。以盆栽日日春為指標作物之肥效試驗，結果顯示二種市售溶磷菌皆無促進植物磷肥吸收之淨效益。無論有無滅菌之菌劑，皆會降低土壤之pH 值，並同時稍降低土壤磷濃度。日日春是否能真實反應微生物之肥效仍待觀察。小胡瓜之肥效田間試驗，結果顯示商品A 溶磷菌無促進植物磷肥吸收之淨效益，其中滅菌處理，甚至對植株有顯著負面影響，推測或許與其成分中含尿素較高，經加熱產生縮二脲酸對植株造成的毒害。商品Ｂ處理之小胡瓜產量與全量化肥處理之相當，經滅菌處理則與對照相當，顯示此商品確有肥效。 In Taiwan, it is not necessary to submit an experiment report of fertilizer effect whenever application for registration of microbial fertilizer is needed. Furthermore, there is no regulation for the quantitative test of viable indicators. The result of periwinkle pot test showed that the treatments of these two commercial PSM (phosphate-solubilizing microbial) present non positive effects to the plant growth and phosphate uptake. Whatever sterilized or not, two goods could reduce the pH and Bray I phosphate concentration of the test soil. was completed. The result of the cucumber field trials showed that PSA treatment present non positive effects to the plant growth and yields. In addition to, PSA fertilizer present minus effects significantly, caused by the toxicity from biuret, generated from heating, speculatively. On the other hand, PSB present positive effect to the plant growth and yield, showed that PSB is a effective product.