当今随着粮食产量和效益的成倍提高 ,作物对氮、磷、钾等营养元素的需求越来越多。近年来 ,氮、磷肥的大量施用已基本满足了农作物的需要 ,而钾肥的供需矛盾日益突出 ,不少地区出现了缺钾症状 ,施小钾肥的效果日趋显著 ,施用钾肥应列为作物增产增收的首要措施。一、钾肥的增产 Nowadays, with the doubled of grain yield and benefit, there is an increasing demand of crops for nutrients such as nitrogen, phosphorus and potassium. In recent years, a large number of applications of nitrogen and phosphate fertilizer have basically met the needs of crops, but the contradiction between supply and demand of potash fertilizer has become increasingly prominent. In many areas, the symptoms of potassium deficiency have emerged. The effects of applying potassium fertilizer have become increasingly significant. Potash fertilizer application should be classified as crop yield increase The first measure. First, the increase of potash fertilizer