干旱区生态环境知识资源中心(Arid): 解钾细菌对西北干旱地区不同硅酸盐矿物的解钾效应研究

Arid

	解钾细菌对西北干旱地区不同硅酸盐矿物的解钾效应研究
其他题名	Mechanism of Potassium Release from Different Silicate Minerals by Releasing K Bacteria in Northwest Arid Land, China
	尚海丽; 毕银丽; 彭苏萍; 解文武
来源期刊	矿物学报
ISSN	1000-4734
出版年	2015
卷号	35 期号:3 页码:337-343
中文摘要	为了开发西北干旱地区土壤潜在肥力并提高土壤水分利用效率,笔者以解钾细菌为供试菌种,西北干旱地区代表性土壤矿物钾长石和伊利石为供试基质,采用实验室培养的方式,研究不同水分和接菌浓度条件下解钾细菌对土壤矿物的解钾效应,并通过傅里叶变换红外光谱、透射电镜和能谱分析技术探究解钾细菌对矿物形貌和结构成分的影响。结果表明,解钾细菌对钾长石和伊利石均有显著的解钾效应,该作用受水分、接菌浓度因素影响显著。钾长石最佳接菌量15%、最佳含水量70%;伊利石最佳接菌量20%、最佳含水量70%。钾长石受解钾细菌作用发生溶蚀,K含量降低,Si/Al降低,说明解钾细菌不但可以释放钾长石中的钾元素,还可溶出Si元素并用以自身的生长需求。伊利石受解钾细菌作用层间电荷降低,铝氧八面体中2价阳离子释放,层间电荷降低,造成层间K~+离子和吸附水的释放。伊利石傅里叶变换红外光谱曲线显示K元素的释放与层间水分子的释放有关。因此,进一步研究解钾细菌作用下的土壤粘土矿物Si、Fe等元素的迁移,以及层间K元素与层间水分子的相互作用具有重要的生态意义。
英文摘要	To explore potential fertility of soil and utilized coefficient of soil water, it is researched that potassium release from soil minerals by releasing K bacteria with different inoculation amounts and water contents in static culture. Releasing K bacteria is inoculated in illite and feldspar substrates, which are the main soil minerals in northwest arid land. The changes of mineral morphology, structure and composition are tested by Fourier Transform Infrared Spectroscopy (FTIR), Transmission Electron Microscopy (TEM) and Energy Disperse Spectroscopy (EDS). Results show that silicate bacteria C_6X has significant effect on potassium release from feldspar and illite, which is effected by water and inoculation amount. The appropriate inoculation conditions are 15% of inoculation amount, 70% of moisture content for feldspar and 20% inoculation amount, 70% of moisture content for illite. Feldspar is dissolved by releasing K bacteria, potassium content, and Si/Al are both low. It is showed that the releasing K bacteria can not only release potassium from feldspar, but also dissolve Si which is used for their own growth. Interlayer charge of illite is reduced by releasing K bacteria; divalent cations are released from alumina octahedral; interlayer charge is lower, which cause the release of K~+ ions and adsorbed water. FTIR of illite shows that the release of K is associated with the release of interlayer water. Therefore, the further study on Si and Fe element migration from soil clay minerals by releasing K bacteria, and interaction between interlayer K element and water molecules has important ecological significance.
中文关键词	解钾细菌 ; 伊利石 ; 钾长石 ; 解钾效应
英文关键词	Releasing K Bacteria Illite Feldspar Potassium Release
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Geology
WOS研究方向	Geology
CSCD记录号	CSCD:5486031
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232958
作者单位	尚海丽, 中国矿业大学(北京), 煤炭资源与安全开采国家重点实验室, 北京 100083, 中国.; 毕银丽, 中国矿业大学(北京), 煤炭资源与安全开采国家重点实验室, 北京 100083, 中国.; 彭苏萍, 中国矿业大学(北京), 煤炭资源与安全开采国家重点实验室, 北京 100083, 中国.; 解文武, 中国矿业大学(北京), 煤炭资源与安全开采国家重点实验室, 北京 100083, 中国.
推荐引用方式 GB/T 7714	尚海丽,毕银丽,彭苏萍,等. 解钾细菌对西北干旱地区不同硅酸盐矿物的解钾效应研究[J],2015,35(3):337-343.
APA	尚海丽,毕银丽,彭苏萍,&解文武.(2015).解钾细菌对西北干旱地区不同硅酸盐矿物的解钾效应研究.矿物学报,35(3),337-343.
MLA	尚海丽,et al."解钾细菌对西北干旱地区不同硅酸盐矿物的解钾效应研究".矿物学报 35.3(2015):337-343.