玉米是我省大春主要旱地粮食作物,种植面积约占全省旱地作物总播面积的50％。近年来随着高产良种的应用,氮磷化肥施用量的增加,玉米产量大幅度提高。如何在现有施肥水平和产量的基础上,确保玉米获得更高的产量呢?据我们近几年的试验研究与示范推广结果证明,施用钾肥,做到平衡施肥是玉米高产的重要措施之一。1990年我们又进行了玉米施钾正规试验,钾肥的增产效果非常显著。现将结果报告于后,供参 Maize is the main dry-land food crop in spring in our province. The planting area accounts for about 50% of the total sowing area of ​​dry land crops in the province. In recent years, with the application of high-yielding seeds, the application of nitrogen and phosphorus fertilizers increased significantly and corn yield increased significantly. How to ensure that corn can get higher yield based on the current fertilization level and yield? According to the results of pilot studies and demonstrations in recent years, it is proved that applying potassium fertilizer and balancing fertilization is one of the important measures for high yield of corn . In 1990 we conducted a formal test of potassium fertilization in maize, and the yield increase of potash fertilizer is very significant. The results will be reported later, for reference