“福三长丰”是烟台市福山区三里店村姜忠诚于1980年从双季豆大田中筛选出的一个自然变异株。该品种生育期100天左右,属中熟品种,无限生长型,具有荚长、质嫩、纤维少、分枝性强、高产、抗病等特点,适于春秋两季栽培。春播一般亩产2500kg左右,秋播亩产1600kg左右,产量高而稳定。第四片真叶叶腋着生第一花序,每序花6～8朵小花,结荚3条,单株平均结荚48条。荚长20cm左右、荚宽 “Fu III Changfeng ” is a natural variant selected from double cropping beans field in 1980 by Jiang Zhongcheng, Sanlidian Village, Fushan District, Yantai City. The variety of growth period of about 100 days, is a medium-maturing varieties, unlimited growth type, with a long Pod, tender, less fiber, branching, high yield, disease resistance and other characteristics suitable for spring and autumn cultivation. Spring sowing generally about 2500kg per mu, autumn sowing 1600kg or so, high yield and stability. The fourth true leaves axillary first inflorescence, each flower 6 to 8 flowers, pods 3, an average of individual pods 48. Pod length 20cm or so, pods wide