Tangerines are sweet and rich in vitamin C and are loved by many people.

The vitamin A in oranges can also enhance human vision in dark environments and treat night blindness. Oranges should not be eaten in excess. If you eat too much, you will suffer from caroteneemia, and the skin will be dark yellow, like jaundice. If your palms turn yellow due to eating too many oranges, as long as you stop eating for a while, your skin tone will gradually return to normal.

Oranges are slightly shade-tolerant, prefer a warm and humid climate, but are not cold-resistant. When the temperature is lower than -8°C, frost damage occurs. It is suitable for deep and fertile neutral to slightly acidic sandy loam. High temperature is also not conducive to the growth and development of citrus. When the temperature and soil temperature are higher than 37 ℃, the fruit and root system stop growing. The effect of temperature on fruit quality is also obvious: within a certain temperature range, usually with the increase of temperature, the sugar content and soluble solids increase, the acid content decreases, and the quality becomes better. Citrus is a tree species with strong shade tolerance, but good sunshine is still needed for high quality and high yield. Generally, areas with 1200 to 2200 hours of sunshine per year can grow normally. For example, compared with the citrus producing areas in Chongqing with less sunshine, South China, which has good sunshine and abundant calories, has high sugar content, low acid content and high sugar-acid ratio.

Oranges are very rich in nutrients, not only common vitamins, protein, dietary fiber and other nutrients, but also riboflavin, niacin, ascorbic acid and other substances have good lipid-lowering, anti-atherosclerosis and other effects . Orange juice also contains a substance called "nomilin", which can effectively prevent gastric cancer.

Tangerine is flat, enters the lung, stomach, and spleen meridians, and has the effects of resolving phlegm and regulating qi, and relieving chest tightness; the volatile oil it contains can lower blood pressure, lower cholesterol in blood vessels, and prevent atherosclerosis; it contains enzymes and rich dietary fiber. , can make people feel full and inhibit the intake of fat, and play a role in weight loss; moreover, oranges are also rich in vitamin C, which can eliminate free radicals, prevent and improve the damage of free radicals to the human body, and can play a role in Whitening, moisturizing and improving complexion.