本试验把生长箱大豆耐低温萌发筛选与田间早春播研究相结合,验证耐低温发芽的可靠性。在实验室,萌发期表现抗冷的大豆,田间出昔期仍表现抗冷或较抗冷。实验表明,大豆出苗的生物学最低温度平均为7.1℃,所需有效积温136℃。地温的高低直接影响大豆早春出苗的多寡,两者呈密切的正相关。黄、青、黑豆中,以黑豆抵抗早春不良气候条件的能力最强。 In this experiment, the combination of low temperature resistant soybean germination screening and field early spring sowing was used to verify the reliability of germination at low temperature. In the laboratory, the germination of the performance of cold-resistant soybean field in the past are still cold or cold resistance. Experiments show that the lowest biological temperature of soybean emergence average 7.1 ℃, the effective accumulated temperature 136 ℃. The level of geothermy directly affects the amount of soybean emergence in early spring, the two are closely related to each other. Among the yellow, green and black beans, black beans are most capable of resisting unfavorable climatic conditions in early spring.