Description
Grapefruit (scientific name: Citrus maxima (Burm) Merr.) is a plant of the Rutaceae family and the citrus genus. arbor. The tender branches, leaf backs, pedicels, calyx and ovary are all pilose. The tender leaves are usually dark purple-red, and the tender branches are flat and ribbed. The leaves are thick, dark green in color, broad oval or elliptical, and the Lianji leaves are 9-16 cm long and 4-8 cm wide. Racemes, sometimes with single axillary flowers; flower buds are light purple-red, milky white; calyx is irregularly 5-3 lobed; petals are 1.5-2 cm long; stamens are 25-35, and sometimes part of the stamens is sterile. The fruit is round, oblate, pear-shaped or broad-cone-shaped, with thick or thin skin, spongy, large oil cells, convex, solid but soft core, sacs 10-15 or as many as 19 petals; many seeds There are more than 200 grains, there are also seedless, irregular shapes, usually approximately rectangular, single embryo. Flowering period from April to May, fruit period from September to December.
It is native to Southeast Asia and has been cultivated in China for more than 3000 years. It is planted in Zhejiang, Jiangxi, Guangdong, Guangxi, Taiwan, Fujian, Hunan, Hubei, Sichuan, Guizhou, Yunnan and other provinces. Pomelo likes a warm, humid climate and is intolerant of drought. The optimum temperature during the growth period is 23-29℃, and it can tolerate the low temperature of -7℃.
The skin, flowers, and leaves of pomelo can also be extracted with high-quality aromatic oil, and high-quality pectin can be extracted from the peel, and the pulp can be processed into juice, wine, citric acid, jam and canned food. After the comprehensive utilization of fruits, the economic benefits are expected to increase by 4 times, and the comprehensive utilization of pomelo still has great potential for exploitation. The pulp contains higher vitamin C. It has the effects of digestion, antidrinking and poisoning.
