马铃薯是青海省浅山地区重要的粮菜兼用型作物，素有“洋芋半年粮”之说，以往在夺取高产方面以更新更换品种为提高单产的主要手段。由于该地区农民群众习惯上只重视氮、磷肥施用，却不重视钾肥施用，为此，根据外地许多马铃薯追施钾肥能提高产量的经验，结合我省浅山地区实际 Potato is an important staple crop used in shallow mountains in Qinghai Province. It is said to be “half a year’s worth of potato”. In the past, the main means of increasing yield was to replace and update varieties in order to seize high yield. Because the peasants in this area habitually attach importance to the use of nitrogen and phosphate fertilizer, but do not attach importance to the use of potash fertilizer. Therefore, according to the experience of many potatoes topdressing potash fertilizer in the field to increase production,