硅酸盐细菌解钾能力研究

Study on the Potassium Dissolving Ability of Silicate Bacteria

对分离到的两株硅酸盐细菌的解钾能力进行了测定,其中BM-BD菌株具有较强的解钾能力,接种该菌的摇瓶培养液中,水溶性钾含量为5.6μg/mL,比不接菌对照增加了47.4%,大于解钾模式菌株ACCC10013的解钾能力.对BM-BD菌株进一步试验表明:该菌株在发酵罐培养条件下也能将云母中的矿物钾释放出来,接种培养108h后,培养液中的水溶性钾增加了34%.

The k-releasing capabilities of two strains of silicate bacteria isolated from soil were tested. It was found that the BM-BD strain possessed stronger potassium dissolving ability. The content of dissoluble potassium in the shaking flask cultural liquid inoculated BM-BD strain reached 5.6μg/mL, which was 37% over that of the non-inoculated. Moreover,its ability of decomposing potassium-contained mineral was stronger than that of ACCC10013 strain, a model k-releasing strain. A further test showed that BM-BD strain behaved the same ability of releasing potassium from the mineral mica when cultured in fennentor. 108 hours after inoculation, the useful potassium in the cultural liquid was 34% over the initial value.