对“植物的元素缺乏症”实验中营养液问题的探讨

Discussion on nutrient solution in experiment of"Plant element deficiency"

通过对浓度、“溶度积法则”和pH值等的计算,针对“植物的元素缺乏症”实验中学生的一些疑惑进行探讨,对营养液数据进行分析和推理,并对营养液中结晶化合物用量、铁元素、化学平衡及沉淀等问题进行研究,提出解决方案和改进建议.

Through the calculations of concentration,"solubility product rule"and pH in nutrient solutions,some doubts of students in the experiment of"Plant element deficiency"are discussed,the data of nutrient solution are analyzed and reasoned,the amount of crystalline compounds,iron element,chemical balance and the precipitation problem in nutrient solution are studied,and the solutions and modification suggestions are put forward.