1, potato
Potato tuber contains a lot of starch, which can provide abundant calories for human body, and is rich in protein, amino acids, vitamins and minerals, especially its vitamin content is the most complete among all food crops. In Europe and America, especially in North America, potatoes have long been the second staple food.
2. Mushrooms
Mushrooms are saprophytic fungi, which can only absorb carbon, nitrogen and minerals from ready-made nutrient substrates for growth and development. The carbon source it needs is monosaccharide and polysaccharide, and these nutrients mainly come from the decomposition of fiber, hemicellulose and lignin in sawdust.
3. onions (surname)
Onions are native to West Asia and are widely planted at home and abroad. It is one of the main vegetables in China. Onion producing areas in China mainly include Fujian, Shandong, Gansu, Inner Mongolia and Xinjiang.
4. Lotus root
Lotus root is a plump underground stem of lotus, which can be used as food. Lotus root is mainly planted in marshland, which is rich in China and Hubei, and belongs to one of the Eight Immortals.
5.celery
Celery belongs to Umbelliferae, which has a long planting history and a large planting area in China. It is one of the vegetables that people in China often eat. It is rich in protein, carbohydrates, carotene, B vitamins, calcium, phosphorus, iron and sodium.