菜豆良种─—双丰１号、２号、３号天津市农科院蔬菜研究所育成的早熟、丰产、质优、抗病、耐热性强的新品种，适宜春、秋两季种植。其植株蔓生，株高３米左右，主蔓节数２０节左右，叶和荚均淡绿色，单株结荚３０—５０个，荚长１８～２２厘米，荚粗１厘米，单荚重１５～... Good seed beans ─ ─ Shuangfeng No. 1, No. 2, No. 3 Tianjin Academy of Agricultural Sciences Vegetable Research Institute of bred early maturity, high yield, high quality, disease resistance, heat resistance and strong new varieties, suitable for spring and autumn planting. Its plant vine, plant height of 3 meters, the main vine festival number 20, leaves and pods are light green, pod 30-50 pods, pods 18 to 22 cm, 1 cm thick pods, single pod weight 15 ~ ...