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从中国、欧洲,美国、加拿大、苏联的大豆生产历史来看,大豆是通过较早熟品种的育成,逐渐由纬度较低的地区,向纬度较高的地区伸延适应,而扩大栽培领域的。极早熟(相当于000及00成熟期组)大豆品种的育成,已使大豆能在中国东北的最北部地区,在西伯利亚及北欧的瑞典,以及美国最北部与加拿大偏南农区成为新兴的大豆产地。与此同时,短光性强并能适应高温条件的Tropical,Timbira,Jupitef等品种的
From the history of soybean production in China, Europe, the United States, Canada and the Soviet Union, soybeans have gradually broadened the scope of cultivation through gradual adaptation from lower latitudes to higher latitudes through the breeding of earlier varieties. The development of extremely precocious (equivalent to 000 and maturity) soybean varieties has led to the emergence of soybeans as emerging soybeans in the most northern part of northeastern China, in Siberia and northern Europe in Sweden, and in the northern most part of the United States and southern Canadian agricultural areas Origin. At the same time, Tropical, Timbira, Jupitef and other varieties that are short-light and adaptable to high temperatures