The researchers conducted an experiment on eating purple sweet potato in 36 families. Most of the old people with hypertension insisted on eating purple sweet potato, and their blood pressure was controlled, and 17 people's blood pressure dropped to the normal range. There are several people who have bad stomachs. On the third day of eating, they feel relaxed and have no feeling of fullness. There are two little boys, both of whom are very fat. They are called chubby. After eating purple sweet potatoes for several months, their posture has obviously changed. The chubby is not fat, but also taller. This is mainly because the trace elements of purple sweet potatoes promote the growth of children's bones. Se-purple sweet potato stems and leaves are purple-green except for the meat purple of underground potato pieces, and its nutritional value and medicinal value are very high. The health care function of tender stem and leaves cooking is higher than that of black fungus and its taste is better than that of water spinach. It is a new specialty in the market, and it sells well in the vegetable market. Potatoes grow underground, vegetables grow on the ground, and new stems and leaves are picked. It takes a long time to pick, and only stems and leaves can be harvested, which can reach 3-5 thousand yuan per mu. Root tuber and stem and leaf are rich in nutrition, the whole body is a treasure, and they have special health care functions. In recent years, they are very popular in the international and domestic markets. The prospect of developing and planting purple sweet potatoes is very broad, with an output value of more than 20,000 yuan per mu and obvious economic benefits.
This is a promising planting project.