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钾素是植物生长所需要的主要营养元素之一。土壤中直接被作物吸收利用的速效钾,其含量高低反映了土壤中钾素的供应水平。因此,土壤速效钾的测定,时指导合理施肥、改变土壤中钾素的供应水平是不可缺少的。本文就石灰性土壤中速效钾测定方法中的以下几点进行了研究探讨: 1.我室原采用彼坚布尔斯基《农业化学分析》中所推荐的“古席诺夫一普罗达索夫法”
Potassium is one of the main nutrients required for plant growth. The available potassium in soil directly absorbed by crops reflects the level of supply of potassium in the soil. Therefore, the determination of soil available potassium, when the guidance of rational fertilization, change the supply of potassium in the soil is indispensable. In this paper, the determination of available potassium in calcareous soils was studied in the following points: 1. In our laboratory, “Gynimov-Prodastov” as recommended in “Agro-chemical Analysis” law"