Sweet potato belongs to the genus Ipomoea of Convolvulaceae, and its pulp is purple to deep purple, so it is also called black sweet potato, purple sweet potato or purple sweet potato. Purple sweet potato is a special variety of sweet potato, which has the characteristics of edible, economic and medicinal crops. Besides the components and functions of common sweet potato, it also has many physiological functions and is an important raw material for food, medicine, chemical industry, light industry, textile and other industries.

Purple sweet potato contains 10 mineral elements such as selenium, zinc, iron and phosphorus, 18 amino acids, and 8 vitamins such as vitamins C, B and A, especially anthocyanins, which have great medicinal value.

Variety selection

Choose varieties with high yield, high quality, disease resistance and wide adaptability, such as Ji Shu 18, Xu Zi 1 and Zi Ning No.4, which can be eaten fresh and suitable for large-scale planting. Generally, it is appropriate to choose potato pieces with the size of 150 ~ 250 g. The seed potato should have smooth skin, neat potato pieces, no disease spots, no scars and no freezing injury.

Reference to the above content: Baidu Encyclopedia-Purple Potato