A, where the black bean origin 1, China has planted black beans all over the world, varieties and resources is the world's first, China has more than 22,000 copies of soybean varieties of resources.

2, its Chinese black beans have 2980 copies, mostly distributed in the Yellow River basin, accounting for 13.2%, is the main producing areas of small black beans.

3, at present, shaanxi, north of shanxi loess plateau area is still planting black small beans.

4, some areas of farmers collectively referred to soybean as black beans, soybean called white black beans, black beans called black black beans, indicating that the local planting of black beans extensive and long.

Two, black bean cultivation area 1, the northern soybean area: including Xinjiang, Gansu, Qingmei, Ningxia, Inner Mongolia, and northern Shaanxi, Shanxi, northern Hebei and northeastern provinces.

2, Huaihai soybean area (1) including Hebei south of the Great Wall and north of the Qinling and Huaihe rivers, east of the coast, west to the vast area of Minshan.

(2) There are Shandong, Henan, central and southern Hebei, southwestern Shanxi, Shaanxi Guanzhong Plain, southern Gansu, as well as the northern part of Jiangsu and Anhui.

3, the southern soybean area: including the Qinling and Huaihe River south of the region, the middle and lower reaches of the Yangtze River in Jiangsu, Anhui, Jiangxi, Hubei, Hunan, the southeast of Zhejiang, Fujian, as well as Guangdong, Guangxi and other places.

4, southwest soybean area: including Yunnan, Guizhou, Sichuan and Guangxi part of the region, these areas of the terrain are higher, the altitude of more than 1000.

5, South China soybean area: including Guangdong, Guangxi, Yunnan, Fujian and other southern areas and Taiwan, Hainan and other provinces.