坝上示范「四深」栽培马铃薯获成功坝上沽源县常年播种马铃薯１０万亩左右，近年来，由于示范推广了以脱毒薯为基础的“四深”栽培法（深耕、深种、深培、深施碳铵），不仅增强了马铃薯抗御灾害的能力，并连续３年获得较好收成，起到了以点带面作用。其具体栽培方法是：一... In the dam demonstration of “four deep” cultivation of potato was successfully marketed in Guyuan County, Bashang about 10 million mu of potatoes in recent years, due to demonstrating the promotion of the “four deep” cultivation method based on detoxification of potato (deep plowing, Deep training, deep-applied ammonium bicarbonate), not only enhanced the potato’s ability to resist disasters, and for three consecutive years to obtain better harvest, played a point with the role. The specific cultivation method is: a ...