摘要
本文利用离子选择性电极实现了对设施栽培中营养液的氮、钾、钙等离子浓度以及电导率和pH值的在线检测 ,并根据特定作物在特定生长期、生长环境相对稳定的条件下 ,各种营养元素浓度与电导率、pH值之间存在相对稳定的关系 ,以及各营养成分之间的变化关系实现了磷 。
In this paper, application of ion selective electrode implement the on line measurement of some ingredients in the nutritive medium in Greenhouse Culture, such as the concentrations of ions of Nitrogen, Kalium, and Calcium, EC and pH, and implement the soft sense of the concentrations of ions of Phosphorus, Sulfur and Magnesium according to the relative stable relation of concentrations of every ingredient and the value of EC, pH in a period when growth circumstance is relatively stable for special crop in special growing period, as well as the relation among variation of every ingredient.
