云南省脱毒马铃薯示范推广成效显著马铃薯是云南的重要粮食作物，也是大宗蔬菜，全省常年种植面积超过３００万亩，仅次于水稻、玉米、小麦，居第４位，在高寒冷凉山区则是主要粮食作物。云南的马铃薯主产区主要分布在贫困山区，发展马铃薯生产，直接关系到贫困山区人民的... Yunnan Province demonstrating the effectiveness of virus-free potato demonstration significant Potato is an important Yunnan food crops, but also a large number of vegetables, the province’s perennial planted area of ​​more than 300 mu, second only to rice, corn, wheat, ranking No. 4, in cold and cold mountains It is the main food crops. Yunnan’s main potato producing areas are mainly located in poor mountainous areas, the development of potato production, directly related to the poor mountain people’s ...