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題名 | 黏土礦物對土壤細菌生長影響之研究=Influence of Clay Minerals on the Growth of Soil Bacteria |
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作者姓名(中文) | 林季融; 陳鴻基; 曾志明; | 書刊名 | 台灣農學會報 |
卷期 | 12:2 2011.04[民100.04] |
頁次 | 頁164-185 |
分類號 | 434.22 |
關鍵詞 | 黏土礦物; 土壤細菌; 磷酸酯; Clay minerals; Soil bacteria; Phosphatase; |
語文 | 中文(Chinese) |
中文摘要 | 根圈中有很多重要過程都會受土壤細菌所影響,黏土礦物種類與含量對微生物的生長與繁殖影響很大,本研究之目的在探討不同土壤黏土礦物種類對細菌生長的影響。經由試驗結果指出三種黏土礦物對土壤溶磷細菌生長上的影響以多鐵蒙特石的影響最大,鈉蒙特石居次,而以高嶺石的影響最小。土壤黏粒在土壤溶磷細菌菌落數上的影響大小順序是大里系>秀水系>吳厝系,對磷酸酯酶活性的影響也有相同的情形,顯示三種黏土礦物與土壤黏粒對土壤溶磷細菌生長上的影響與磷酸酯酶活性有正相關關係。此外,土壤溶磷細菌在三種土壤中孵育後的菌落數以以大里系的菌落數最多,其次是秀水系,而以吳厝系的菌落數最少。由土壤溶磷細菌菌落數與磷酸酯酶活性間的相關性也指出,土壤溶磷細菌的生長對磷酸酯酶活性有很明顯的影響,此對根圈有機磷化合物的分解及作物養分吸收上的研究是非常重要。 |
英文摘要 | Soil bacteria influence many important processes in the soil rhizosphere; whereas, the growth of microorganism is apparently affected by various types and contents of clay minerals. It is thus important to study the growth of soil bacteria in different clay minerals and soils. Our results indicated ferruginous smectite has the largest effect on the growth of phosphorus-solubilizing bacteria (R. tropici CC-BL6) and vice versa for kaolinite. The colony-forming unit (CFU) of phosphorus-solubilizing bacteria is in the order Tali>Shiushui>Wutso. Since the same order was also observed for phosphatase, it is believed the bacteria growth must be related to the phosphatase activity. Further, the CFU of phosphorus-solubilizing bacteria is in the order Tali>Shiushui>Wutso following incubation of phosphorus-solubilizing bacteria in three soils. We conclude the growth of phosphorus-solubilizing bacteria can affect the activity of phosphatase, which is important in the research of the decomposition of organic phosphorus compounds and nutrient uptake of crops in the soil rhizosphere. |
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