硅酸盐细菌对矿粉和土壤的解钾作用研究  

ROLE OF SILICATE BACTERIA IN RELEASING POTASSIUM FROM MINERALS AND SOILS

作　　者：罗微[1,2] 谢德体[1,2] 黄昭贤 彭胜德[1,2] 杨雪梅 

机构地区：[1]西南农业大学资源环境学院 [2]四川省自然资源研究所

出　　处：《西南农业大学学报（自然科学版）》1998年第1期5-8,共4页Journal of Southwest Agricultural University

基　　金：四川省科委重点课题

摘　　要：以含钾矿粉和土壤为材料，用硅酸盐细菌进行解钾试验。结果表明，硅酸盐细菌对不同类型矿粉的解钾能力不同：炭渣＞石骨子＞绿豆岩＞正长石。解钾量与矿粉粒径密切相关，随矿粉粉径的减小而增加：ｙ＝９．６７５ｘ－０．７２１，ｒ＝－０．９９２＊＊。硅酸盐细菌接到土壤后长期培养，可增加土壤中的速效钾，但其增加量不稳定。土壤的营养条件对硅酸盐细菌的解钾效果有一定影响。Soil potassium can be released by silicate bacteria from silicate minerals. The results showed silicate bacteria has different potassium soluting ability for different kinds of minerals and according to the soluting ability the order for four minerals is: coal powder>purple argillaceous rock>chlorite>orthoclase.Silicate bacteria release more potassium from mineral with the less diameter of mineral powder: y =9.675 x -0.721 (y - the quantity of releasing potassium, x - the diameter of mineral powder), r =-0.992 ** . Inoculating a soil with silicate bacteria led to increase in readily available K, but whose quantity is not stable. This reason is not clear and should be studied further. Another experiment showed the nutrient of soil had some effects on silicate bacteria in releasing potassium.

关 键 词：硅酸盐 细菌 矿物 土壤 钾 土壤肥力 

分 类 号：S152.1[农业科学—土壤学] S158.3[农业科学—农业基础科学]