油茶叶片相对电导率与其养分含量的关系

The relationship between the leaf relative electric conductivity and its nutrient content in the leaf of Camellia oleifera

为探求提供一种简捷实用的林木养分测定方法。以油茶为对象,采用常规养分分析和电导率法,分别测定油茶叶片样品的N、P、K养分含量及其相对电导率,建立其相对电导率与养分含量的相关模型,并探索利用根据测定样品的电导率,来快速获得该样品的养分含量。结果表明,油茶叶片样品相对电导率与N、P、K养分含量相关性良好,且均遵循多项式拟合模型,经验证,该预测模型精度达90%以上。

In order to seek a simple, quick and accurate method to determinate the amount of plant nutrient, the contents of N ,P ,K and relative conductivity of Camellia oleifera leaf samples were measured respectively by using the conventional method of nutrient analysis and conductivity method in C. oleifera, And also, the related models between the relative conductivity and nutrient contents were established, so that the nutrient content of the sample was obtained quickly by measuring conductivity. The results indicated that a significant correlation was observed between the relative conductivity and N, P ,K nutrient contents of C. oleifera leaf samples, which all of those followed the polynomial fitting equation. The rate of accuracy of the prediction model was more than 90% .