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.
varietal characteristic
1. With superior quality and tender meat, it is an excellent fresh and healthy sweet potato variety. Can also be used for extracting natural anthocyanins; Beautiful appearance, purple-black skin color and purple flesh color. Potato has a long spindle shape, smooth and bright skin and good commodity. The commodity rate is over 90%, and the drying rate is about 33%.
2. The vines are short and branched, and have strong growth potential on the ground. The leaves of purple sweet potato are green and the stems are purple. The petiole base is about 1cm, with 5-6 branches, and the length is only about 1.2- 1.5m, which is convenient for field production management.
3. The yield of fresh potato is high, and the yield of concentrated potato is about 2500kg per 667 ㎡. If properly managed, the yield of summer potato can reach about 2000 kg per 667 ㎡.
4. precocious. It can be divided into two seasons, and the potato pieces swell early. If the film is covered in early spring, it can be listed from the end of July to the beginning of August.
5. Strong adaptability and good disease resistance. High resistance to root rot of sweet potato, good resistance to stem nematode disease, barren and drought tolerance, and wide suitable planting area.