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吉丰早大豆属北方春大豆,早熟品种.从出苗至成熟110天,需活动积温2350℃,比合丰25号(CK)早8天左右.无限结荚习性.株高95～100厘米.品种植株高大、繁茂.主茎发达粗壮.节间短、节多,有4～5个分枝,结荚浓密,均匀.4粒荚居多,株型收敛。圆叶,紫花,灰毛,荚褐色。籽粒椭圆形,种皮黄色,光亮.脐为黄色,百粒重24克.品质好,蛋白质含量46.8%、脂肪含量19%.该豆茎秆有韧性,高抗倒伏.抗大豆花叶病毒病、褐斑病和霜霉病.抗大豆食心虫病。完全粒率高,虫食率低.丰产性好.1993～1995年三年所内外试验结果.平均亩产305公斤,比对照品种增产25%,1995～
Ji-Feng early soybeans are northern spring soybeans, precocious varieties.From emergence to maturity 110 days, the need to active accumulated temperature 2350 ℃, Hefeng No. 25 (CK) about 8 days or so.Experimental pod habit.Humidity 95 ~ 100 cm. Varieties of tall, lush. Developed stout main stem. Internodes short, more sections, 4 to 5 branches, pod dense, uniform. 4 pods mostly plant type convergence. Round leaves, purple, gray hair, pods brown. Egg oval, seed coat yellow, bright. Umbilical yellow, 100 grams weight 24 grams. Good quality, protein content of 46.8%, the fat content of 19% of the bean stalk toughness, high lodging resistance against soybean mosaic virus disease Brown Spot and Downy Mildew. High rate of complete grain rate, low rate of insect feeding, high yield and good results of the three years from 1993 to 1995. The average output per mu is 305 kg, an increase of 25% compared with the control varieties,