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该品种系中国农科院蔬菜花卉所用国际马铃薯中心引入的LT-2作母本,DTO-33作父本,1984年杂交,1985年从实生苗群体中选出优良单株85T-14-3。经1987～1989年3月北京区试,平均比对照东农303增产28.7％以上。一般在北京春季亩产2000公斤以上;秋季1000公斤左右。1990年由北京市农作物品种审定委员会审定通过为推广品种并定名为“中薯2号”。
The variety is the LT-2 female parent introduced by the International Potato Center of Chinese Academy of Agricultural Sciences, DTO-33 as male parent, crossed in 1984, and the elite single plant 85T-14-3 . After 1987 ~ 1989 March Beijing area test, on average, more than the control Dongnong 303 yield more than 28.7%. Generally, more than 2,000 kg of mu are produced in Beijing in spring and about 1,000 kg in autumn. In 1990 by the Beijing Municipal Crop Variety Approval Committee approved the promotion of varieties and named “China potato 2.”