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高中一年级化学教材的分组实验中，有一个用草木及提取钾盐的实验。我们精简了实验步骤，取得了好的实验效果。1．材料的选择农村中各种作物的秸杆所烧的灰，含钾盐的成分是不尽相同的，我们经过多年的实验比较，发现选用向日葵的杆子t烧成的发含钾盐成分最高，实验效果最佳。2
In the grouping experiment of the first grade chemistry textbook for senior high school, there was an experiment using vegetation and potassium salt extraction. We have streamlined the experimental steps and achieved good experimental results. 1. The choice of materials The ash burned by the straws of various crops in the countryside is different from the ones containing potassium salts. After many years of experiments and comparisons, we found that the rods containing sunflower seeds have the highest potassium content in the firing The best experimental results. 2