Compared with rice, potatoes have lower calories (rice calories 1 16 kcal/100g, potatoes 76 kcal/100g) and higher nutritional value, and are rich in potassium, which is comparable to bananas. Vitamin c is also rich, comparable to tomatoes; It is rich in vitamin B 1, which China people are easy to lack, and the content of vitamin B2 is also higher than that of rice. There are also some dietary fibers and polyphenols.

Therefore, potatoes are more suitable as staple food than rice.