1. taproot: the product is the expanded taproot of seeds, such as radish, carrot and mustard.

2. Tuberous roots: The products are fat lateral roots or roots with vegetative buds, such as sweet potatoes.

2. Stems: refers to vegetables with large stems as products, which can be divided into:

1. Fat stems: the products are aboveground stems, including lettuce, water bamboo, stem mustard, Brussels sprouts, etc.

2. Tender stems: The products are sprouted buds, including asparagus, bamboo shoots and Toona sinensis.

3. Tuber: This product is underground fat tuber, including potato.

4. Rhizomes: the products are underground fat rhizomes, such as ginger and lotus root.

5. Bulbs: Underground bulbs are used as products, including arrows and taro.

6. Bulbs: The products are hypertrophy bulbs, including onions and garlic.

Extended data:

Nutritional value of vegetables;

1, the main nutrients of vegetables are minerals, vitamins, fiber and so on. The higher the content of these substances, the higher the nutritional value of vegetables. In addition, the content of water and dietary fiber in vegetables is also an important nutritional quality index. Generally, vegetables with high water content and less dietary fiber have better freshness and higher edible value.

2. But from the point of health care, dietary fiber is also an essential nutrient. The nutritional content of vegetables should not be underestimated. According to FAO's statistics in 1990, 90% of vitamin C and 60% of vitamin A necessary for human body come from vegetables, which shows the great contribution of vegetables to human health.

3. In addition, there are many phytochemicals in vegetables that are recognized as beneficial to human health, such as carotenoids, dipropylene compounds, methyl sulfur compounds and so on. Many vegetables also contain unique trace elements, which have special health care effects on human body, such as lycopene in tomatoes and prostaglandin in onions.

It is estimated that more than 2 billion people in the world are polluted by the environment, which leads to many diseases. How to solve the problem of producing a large number of oxygen free radicals due to environmental pollution has attracted increasing attention. One of the effective ways to solve this problem is to add antioxidants to food to remove excessive destructive active oxygen and active nitrogen.

5. It is found that many vitamins, mineral trace elements and related phytochemicals and enzymes in vegetables are effective antioxidants, so vegetables are not only healthy foods with low sugar, low salt and low fat, but also can effectively reduce the damage of environmental pollution to human body, and at the same time, vegetables can prevent various diseases.

Baidu encyclopedia-vegetables