Soybean is an ancient crop originated in China. It was widely cultivated in the middle and lower reaches of the Yellow River more than 3000 years ago. From Heilongjiang coast (53 ° n) in the north to Ya county of Hainan Island (18 ° n) in the south, it is distributed almost all over the country, but it is mainly distributed in Northeast China, Huang Huai Hai area and some southern provinces (regions). Heilongjiang, Inner Mongolia, Jilin, Liaoning, Hebei, Shandong, Henan, Shaanxi, Shanxi, Anhui and Jiangsu (North) are the main soybean producing areas in China The total output accounts for about 30% and 32% of the whole country, which is in an absolute dominant position. Tibet and Xinjiang are only sporadic.
In 2000, the sown area of soybean in China was 9.307 million Hm2, with an average yield of 1656.0kg/hm2 and a total yield of 14.2505 million tons. From Baidu zhidao