The orange-yellow pinyin is chéng huáng, which means orange is ripe.

Introduction of Orange:

It is a mature fruit of Citrus in Rutaceae. Its original plant, orange tree, is an evergreen tree with oval and toothed leaves. The fruit of orange is round or oblong, slightly flat from top to bottom; The color of the peel is orange, and there are many lenticels on the surface, which makes the skin feel rough. Mature fruit peel is red and yellow, which can be used as medicine; Wood can be used as utensils, and the fruit generally ripens in winter, which is one of the four famous fruits in the world.

In China, young fruits and fallen fruits can be dried for medicinal purposes. Storage and transportation resistance. There is a big difference in maturity, which can prolong the supply period of fresh fruit and processing raw materials. Orange varieties can be divided into early, middle and late ripening according to fruit maturity.

In view of the high degree of commercialization of oranges, many varieties with their own characteristics were born under the market demand, such as late-maturing summer oranges (Mi Nai Xia Orange, olinda) to fill the gap in the market, and geographical protection varieties such as seedless orange Gannan navel orange which are beneficial to fresh eating. Many kinds of oranges are named after their places of origin (such as Xinhui Orange in China), and some kinds of oranges have even registered their trademarks (such as American Xiangji).

There have been some varieties of oranges in the long-term cultivation process of human beings, and some varieties have been preserved because they are beneficial to human beings. This species is often crossed with other citrus plants to produce better varieties. Sometimes the cultivated varieties of citrus plants also contain orange characters, but they actually do not belong to this species.

according to the maturity, use and market demand of citrus fruits, the harvest period is determined. It is not suitable to pick fruits in rainy days and when the dew on the fruit surface is not dry. Fruit pickers should wear gloves, cut the fruit together with the fruit handle with a round-headed fruit scissors, then cut the fruit pedicle flat, and handle it gently. Pick fruits from outside to inside and from top to bottom. The inner wall of all fruit containers should be smooth, and the harvested fruits should be transported to the packaging yard or storage warehouse in time. Avoid sun and rain.

The navel orange fruit used for storage after harvest is usually colored at 85% of the fruit surface, and it is best to pick when the fruit is not soft. Picking too early, the color and smell are poor; Harvesting too late is sweeter, but it is not resistant to storage. It is not suitable to topdressing chemical fertilizer and irrigate a lot in the first half of harvest; It should not be harvested within three or four days after heavy rain;