１前言作物品种区域试验是用种之首，育种之尾，是把育种工作与生产实际联系起来的桥梁和纽带。一个品种的生长力是否长久，不仅取决于试验资料的准确可靠，更重要的牵涉到对品种的科学评价和合理布局等问题。本文以甘肃省第四届马铃薯新品系区域试验结果为依据，应用联合... 1 INTRODUCTION Regional testing of crop varieties is the first of its kind and the tail of breeding. It is a bridge and bond linking the breeding work to the actual production. The long-term growth of a variety depends not only on the accuracy and reliability of the test data, but more importantly involves scientific evaluation of the species and reasonable layout and other issues. In this paper, Gansu Province, the fourth trial of the new potato lines based on regional results, the application of joint ...