黑农40号是以绥81—242为母本,铁78057为父本,杂交选育而成,1996年审定推广的优质高产大豆品种。 该品种生育期125天,所需积温2680℃左右,植株高大,粒大整齐,百粒重22克,外观品质优良,1995年生产试验,平均公顷产量2811.5公斤,比目前大面积推广的黑农37号大豆品种增产8.4％～16.1％,增 Heinong 40 is Sui 81-242 as the female parent, iron 78057 as the male parent, cross-breeding from 1996 approved the promotion of high-quality and high-yielding soybean varieties. The variety of growth period of 125 days, the required accumulated temperature of about 2680 ℃, tall plants, neat granulation, 100 grams weight 22 grams, the appearance of good quality, production test in 1995, an average yield of 2811.5 kg hectare, larger than the current promotion of black peasants 37 soybean varieties increased 8.4% to 16.1% increase