土壤硅酸盐细菌的研究进展

Research and progress on soil silicate bacteria

目的不同土壤均含有丰富的磷、钾元素,但它们多以稳定的铝硅酸盐和磷灰石状态存在,不能直接为作物吸收和利用。硅酸盐细菌能通过代谢产生有机酸、多糖而释放出可溶态的磷、钾、硅等元素,而且具有一定的固氮能力,有利于植物的吸收和利用。因此土壤硅酸盐细菌的研究,不仅可为挖掘土壤潜在肥力、维持农业可持续发展提供理论基础,也具有重要的实践指导意义。本研究从硅酸盐细菌在土壤中的分布、研究方法、应用等方面对国内外土壤硅酸盐细菌的研究概况进行综述。

Objective Phosphorus and potassium are rich in different soils,and they are always present as stable aluminum silicate apatite state.Phosphorus and potassium can not be directly absorbed and used by crops.Soluble phosphorus,potassium,silicon and other elements can be released from soil through organic acids,polysaccharides which are produced by silicate bacteria and facilitate absorption in crops.Therefore,the study of silicate bacteria not only provides a theoretical basis for exploring the potential of soil fertility,but also provides a good bacterial fertilizer candidate for sustainable development of agriculture.Distribution,research methods and applications of soil silicate bacteria at home and abroad were summarized in this article.