二季作区春马铃薯品种比较试验程美廷程清海张清祥杨清美（河北邯郸市农业学校邯郸０５６００１）几年来，北方二季作区马铃薯种植面积发展很快，不仅使马铃薯市场的淡季供给有一大改观，也为种植农户增加了可观的经济效益，但由于二季作区大多是发展新种植区，农户对品种... In the past few years, the planting area of ​​potato in the northern part of the second quarter has developed rapidly, not only to make a big change in the off-season supply of the potato market, but also to make a big change in the off-season supply of the potato market. For the planting of farmers increased considerable economic benefits, but because of the second quarter are mostly for the development of new planting areas, farmers on the species ...