Does the questioner want to ask "what is the starch content of Tengfei sweet potato"? 20%-28%. According to the query Tengfei starch information, Tengfei sweet potato starch content is 20%-28%, Tengfei sweet potato mu yield 6000 pounds, Tengfei varieties of high yield, high starch content. The taste is soft, melt in the mouth, sugar content is as high as 20 percent, suitable for growth in the southern coastal cities, rainfall abundant light and mild, very suitable for the growth of Ning Zi 4, it is the growth cycle in 4 months.