一、前言普钙法生产磷钾复合肥是一个新事物,生产试验的单位还不多,对其钾含量的测定,特别是有效钾的测定尚末见有试验研究报导,现用的方法还是参用其它钾肥的测定方法,是不甚恰切的。有鉴于此,我们对磷钾复合肥中的有效钾的测定条件进行了一些试验,以期得出一个较为可行的测定方法,提供给生产部门参考。 I. Preface The production of P and K fertilizer by P-Ca is a new thing and there are not many units in production test. The determination of potassium content, especially the determination of available potassium, is still unavoidably reported in experimental studies. The current method is still Reference to other methods of determination of potassium is not exactly right. In view of this, we conducted a number of tests on the determination of available potassium in phosphorus-potassium compound fertilizers in order to arrive at a more viable determination method, which is provided to the production department for reference.