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测定植株中全钾含量,通常采用比较繁琐的提取方法.欲单独研究、了解植物体中钾素变化动态时,能否简化测定方法,用水溶性钾代替全钾测定提取方法,然后用火焰光度法测定钾量,为此,设计了七种测定方法进行比较.一、材料与方法本试验所用材料为风干小麦叶片、茎秆、穗壳及大豆种子,供试样品共20个,每个样品经风干后,通过0.5毫米筛孔筛子,称样前均在65—70℃烘箱烘6—8小时,重复两次,然后按七种处理方法进行.1.温灰化法(即常用标准法):称样品0.5克,按《土壤理化分析》一书第360页进
Determination of total potassium content in plants, usually using more complicated extraction methods.For a separate study to understand the dynamic changes of potassium in plants, can simplify the determination method, with water-soluble potassium instead of potassium determination and extraction methods, and then flame photometry The potassium content was determined.Therefore, seven kinds of determination methods were designed for comparison.Materials and Methods The materials used in this experiment were 20 leaves, stems, spike shells and soybean seeds, a total of 20 samples for testing, After air-dried, through 0.5 mm sieve sieve, said the sample before the oven at 65-70 ℃ oven bake 6-8 hours, repeated twice, and then by seven treatment methods .1 temperature ashing method (ie common standard method) : Weigh the sample 0.5 grams, according to “soil physics and chemistry analysis” a book 360th page into