Green beans are annual curly herbs with short hairs. Pea is a plant in Central and South America, which was introduced to Asia from 17 to 19 century. China is widely cultivated in the south and north, mainly distributed in the east of China, and planted in Hebei, Shanxi, Sichuan, Yunnan, Hubei and Jiangsu. Extended data:
Green beans are perennial herbs, also known as green beans, kidney beans, green beans and so on. Quzhou, Zhejiang Province is commonly known as "Qingming Bean", and "Green Bean" in Sichuan and Central China is a very common vegetable. The root system of kidney beans is well developed, but its regeneration ability is poor. At seedling stage, the growth rate of roots is higher than that of the ground, the depth of main roots can reach 80 cm, and the length of lateral roots can reach 60-80 cm, mainly absorbing roots at the surface layer15-40 cm. The color of young stems varies greatly according to different varieties, mainly green, deep purple and light purple. Most plants are green, and a few are dark purple. The growth characteristics of stems can be divided into two types: infinite growth type and limited growth type.
The following contents are for reference: Baidu Encyclopedia-Green Bean