At present, the main grapefruit producing countries are the United States, Israel, Argentina, and South Africa. Among them, the grapefruit production in the United States accounts for 70-80% of the world's total production, and sales volume ranks second among citrus, second only to sweet oranges. Grapefruit in the United States was originally produced and sold only in the southern United States. After the Civil War, it began to enter the northern market. Due to the unique flavor and good taste of grapefruit, it quickly aroused people's interest and sales increased sharply, thus promoting the rapid development of grapefruit. In the 1960s, the United States spent millions of dollars to promote its eating methods to countries all over the world, turning it into a breakfast fruit for consumers in Europe, Japan and other countries. As a result, grapefruit was sold well in Europe, Japan and other places, and occupied a leading position in the international market. important position. Since its introduction in my country, grape sleeves have only been cultivated sporadically in Sichuan, Guangdong, Fujian, Zhejiang and other provinces. However, due to the small cultivation area and people's ignorance of how to eat it, it is rarely marketed in the country. The fruit is slightly smaller, with flat oil cells on the fruit surface, round fruit, thin peel, light yellow or greenish yellow, and some mature fruits have a light red halo. The flesh is light yellow or pink, the fruit weighs about 0.45-0.9kg, and has 10-14 valves.