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中国农学通报

中国农学通报 ›› 2006, Vol. 22 ›› Issue (6): 237-237.

所属专题： 水稻

• 目次 • 上一篇    下一篇

吸附等温线方程参数对不同pH水稻土供硅能力的评价

许 讫,,韩春兰,刘 阳,刘鸣达,贺忠科,王雅文,田文霞   

  • 出版日期:2006-06-05 发布日期:2006-06-05

Evaluation of Silicon Supplying Capacity in Paddy Soil in different pH by Parameter of Adsorption Isotherm Equation

Xu Qi,, Han Chunlan, Liu Yang, Liu Mingda, He Zhongke, Wang Yawen, Tian Wenxia   

  • Online:2006-06-05 Published:2006-06-05

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摘要： 选取低浓度系列平衡液进行等温吸附试验，并结合硅肥肥效试验的结果，研究了不同pH水稻土对硅的吸附解吸特征及其与水稻土供硅能力之间的关系。结果表明：在低浓度梯度条件下，直线方程 可以很好地描述土壤对硅的吸附过程。水稻相对产量、植株相对含硅量与 之间存在着极显著的线性正相关关系，所以， 可以作为评价不同pH水稻土供硅能力的指标。

关键词: 石竹茶, 石竹茶, 栽培技术

Abstract: The adsorption and desorption experiment with low concentration silicon and pot experiments were conducted on seven paddy soil in different pH, and the relation between silicon supplying capacity and the parameters of adsorption isotherm were studied. The results showed that, In low silicon concentration conditions, the linear equation, which was found to be more suitable in describing silicon adsorption characteristics of soil. There are very significant linear positive correlations between value and rice relative yield or relative silicon content in plant. Therefore, value can be an index for assessing silicon -supplying capacity in paddy soil in different pH.