Yam can strengthen the spleen and stomach. Yam contains a large amount of amylase or oxidase, which contributes to the recovery of the function of the spleen and stomach system, can tonify the spleen and stomach, and has a therapeutic effect on diseases of the spleen and stomach system.
Yam can benefit the lungs and relieve cough. Yam contains substances that can nourish yin and moisten lung, which can benefit lung qi and nourish lung yin, and has a good therapeutic effect on chronic cough due to lung deficiency.
Yam can also lower blood sugar, and yam can effectively lower blood sugar. Compared with staple food and carbohydrate, the sugar content of yam is lower, so diabetics can eat yam to lower their blood sugar.
Modern research shows that yam is rich in nutrients such as protein, vitamins, calcium, iron, phosphorus, magnesium, potassium, sodium and chlorine, and it is a nutritious food suitable for tonic in autumn and winter. Eating yam regularly helps to strengthen the body's resistance, especially for the elderly, children and weak women. For people who are losing weight, you can often eat yam, which is helpful to lose weight. This is because yam mucus is rich in mannan, which can swell 80- 100 times after water absorption. Therefore, eating yam is easy to produce satiety, which indirectly helps to lose weight.
Yam has rich nutritional value and therapeutic efficacy in daily life and clinic, and it can be chosen to treat diseases in clinic.
When choosing soil, we should choose dry soil with good drainage effect, preferably soft sandy soil with gastric acid properties, which is more conducive to the growth of yam. Before planting yam, a gully with a height of one meter and a depth of about 60 cm is needed. When the soil can drain well, it can be weathered after thawing in spring. One month before planting, we should choose seed blocks that are firm, free from branches and diseases, dip the cut seed blocks in lime powder on one side, and then put them in the sun for a few days, which is conducive to sterilization and disinfection and promotes germination. Handle with care when drying, and do a good job of wind, rain and antifreeze.