神池县地处晋西北高寒冷凉区,平均海拔1 500 m以上,无霜期短,气温低,昼夜温差大,年降水量450-500 mm,种植马铃薯的条件得天独厚。马铃薯生产上的主要病害有晚疫病、早疫病、环腐病、病毒病、黑胫病、疮痂病等,2012和2013年,马铃薯晚疫病在神池县连续两年大流行,发病田块占到了马铃薯播种田块的100%,田间发病株率普遍达到了90%以上,因病害造成的产量损失在20%左右。2014年,神池县马铃薯晚疫病也为偏 Shenchi County is located in the cold-frigid area of ​​northwestern Shanxi Province, with an average elevation of more than 1 500 m, short frost-free period, low temperature, large temperature difference between day and night, and annual precipitation of 450-500 mm. The conditions for planting potatoes are unique. The main diseases in potato production are late blight, early blight, ring rot, viral disease, black shank and scab. In 2012 and 2013, late blight of potato was caused by two consecutive years of flooding in Shenchi County, Potato planting plots of 100%, field incidence rate generally reached 90%, due to disease caused by the loss of about 20%. 2014, Shenchi potato late blight is also partial