豫薯四号是洛阳农科所以高干率型较抗黑斑病甘薯品种济南红为母本，以高产、抗黑斑病材料宁薯一号为父本，１９８０年杂交选育而成。１９９０年４月河南省农作物品种审定委员会审定命名，是河南省命名的第一个食用型甘薯品种，获省科技三等奖。形态特征特性顶叶、叶均为绿... Yushu No.4 Luoyang Agricultural Department is higher than the rate of drought-resistant varieties of black spot sweet potato varieties Jinan red as the female parent, with high yield, anti-black spot disease, Ningxia No.1 as the male parent, 1980 hybrid breeding. In April 1990, Henan Province Crop Variety Approval Committee was named after the first edible sweet potato variety named in Henan Province and won the third prize of provincial science and technology. Morphological characteristics of the parietal lobe, leaves are green ...