土壤钾素运移的影响因素研究进展

Research Advances on Influence Factors of Soil Potassium Movement

钾是植物必需的营养元素,土壤中钾素是作物所需钾素的主要来源。土壤中钾素通过质流、扩散和根系截获的方式到达根表被植物吸收。这些运移方式受一定因素的影响。本文简要综述了土壤钾素运移的影响因素,包括物理因素、化学因素和生物因素,归纳了土壤水分、质地、体积质量、温度、pH值、陪伴离子、钾离子的浓度和植物特性等因素对土壤钾素运移的影响,并展望了未来土壤钾素运移的重点研究方向。

Potassium （K） is an essential mineral element for plant. K in soil is the main source for plant growth, and it is taken up by plant through mass flow, diffusion and root interception. The different K tratlsference mode are affected by many factors. In this paper we reviewed the factors which affect the movement of K in soil, including physical, chemical and biological factors, summarized the effects of soil moisture, texture, bulk densities, temperature, pH, accompany ions, K concentration and plant characteristics on the movement of K in soil. Finally, we prospected the focus research on the movement of K in soil.