1, appearance. The skin of black potatoes is black purple, black and shiny, and glossy, the flesh is dark purple, the color is very tempting, cut and look very much like purple potatoes; while the appearance of ordinary potatoes is yellow, but also yellow potatoes that we often see in the market.

2, nutritional value. Black potatoes are rich in trace elements and anthocyanins, nutritional value is very high, compared with ordinary potatoes, black potatoes, black potatoes only 60% of the calories, vitamin C and iron and other trace elements content is also higher than ordinary potatoes.

3. Price. Black potatoes are a healthy dish with high nutritional value, and the market price is much higher than ordinary potatoes.

4, growth habit and yield. Black potato growth potential is very strong, excellent quality, single plant yield up to 7 or so. But the growth habit and yield of ordinary potatoes and black potatoes compared with no obvious advantage, affected by a variety of factors, such as climate, soil and planting techniques.