在无产阶级文化大革命和批林批孔运动的推动下,我国钾肥的施用和研究近年来有了很大的发展。随着氮磷肥用量的增加,复种指数和单位面积产量的提高,目前在某些缺钾地区,施用钾肥已成为夺取高产稳产的重要因素之一。 Under the impetus of the Great Proletarian Cultural Revolution and the campaign of criticizing Lin and Pidong, the application and research of potash fertilizer in our country have greatly developed in recent years. With the increase of the amount of nitrogen and phosphorus fertilizer, the multiple cropping index and the increase of yield per unit area, the application of potassium fertilizer has become one of the important factors in high and stable yield in some potassium deficiency areas.