豫豆2号系河南省农科院经作所通过有性杂交、系谱法选育而成。由于其含有农家品种血缘,所以豫豆2号具有较强的稳产性和适应性。1981—1986年通过省、国家区域试验和生产示范,是河南省大豆育种工作开展以来育成的推广面积最大的品种。该品种1985年通过河南省农作物品种审定委员会审定,命名为豫豆2号,1989年又通过国家农作物审定委员会审定命名为国审豫豆2号。该品种一般亩产150公斤左右,最高亩 Yudou No. 2 Henan Academy of Agricultural Sciences by the Institute of sex through hybridization, genealogy method bred. As it contains the blood of farmers, so Yudou No.2 has a strong stability and adaptability. From 1981 to 1986 through provincial and national regional experiments and production demonstration, is the largest popularized area breed breeding since Henan Province. This variety was approved by Henan Province Crop Variety Approval Committee in 1985 and named as Yudou No.2. In 1989, it was approved by National Crop Validation Committee and named as National Audit Yudou No.2. The general average yield of 150 kg of the species, the highest mu