内蒙古自治区乌兰察布市四子王旗地处阴山北麓,气候冷凉,昼夜温差大,马铃薯常年种植面积在85万亩左右,占乌兰察布市马铃薯种植面积的21%。近年来为追求经济效益,化肥使用量逐年增加,不仅增加了成本还带来了制约当地农业可持续发展的各种问题,因此,亟需改进施肥方式,提高肥料利用率。2015年,根据四子王旗的农业生产实际, Inner Mongolia Autonomous Region Wulanchabu Siziwangqi is located in the northern foot of Yinshan, cool climate, large temperature difference between day and night, the perennial planting area of ​​about 850,000 mu, accounting for 21% of the potato planting area of ​​Wulanchabu. In recent years, for the pursuit of economic benefits, the use of chemical fertilizers has been increasing year by year, which not only increases the costs but also brings about various problems that restrict the sustainable development of local agriculture. Therefore, it is imperative to improve the fertilization mode and improve the fertilizer utilization rate. In 2015, according to the actual production of agriculture in Siziwang Banner,