Pomelo (scientific name: Citrus maxima (Burm) Merr.) is a Rutaceae, citrus plant. arbor. Twigs, leaf backs, pedicels, calyx and ovary are all pubescent, tender leaves are usually dark purple red, twigs flat and ribbed. The leaves are quite thick, dark green in color, broadly ovate or oval, and even the leaves are 9-16 cm long and 4-8 cm wide. Racemes, sometimes with axillary single flowers; flower buds lavender red, sparsely milky white; calyx irregularly 5-3 lobed; petals 1.5-2 cm long; stamens 25-35, sometimes some stamens are sterile. The fruit is spherical, oblate, pear-shaped or broadly conical, the peel is very thick or thin, spongy, the oil cells are large, raised, the fruit core is solid but soft, the sac 10-15 or up to 19 segments; the seeds are many There are more than 200 grains, some are seedless, irregular in shape, usually approximately rectangular, and single embryo. The flowering period is April-May, and the fruiting period is September-December.
Native to Southeast Asia, it has been cultivated in China for more than 3,000 years. It is cultivated in Zhejiang, Jiangxi, Guangdong, Guangxi, Taiwan, Fujian, Hunan, Hubei, Sichuan, Guizhou, Yunnan and other provinces. Grapefruit likes warm, humid climates and is not resistant to drought. The optimum temperature during the growth period is 23-29°C, and it can tolerate low temperatures of -7°C.
Pomelo fruit skin, flowers and leaves can also extract high-quality aromatic oil, high-quality pectin can be extracted from the peel, and the pulp can be processed into fruit juice, fruit wine, citric acid, jam and canned food. After the comprehensive utilization of the fruit, the economic benefit is expected to increase by 4 times, and the comprehensive utilization of pomelo still has great potential for exploration. The pulp is high in vitamin C. It has the effect of digestion and detoxification.
Grapefruit likes warm, humid climates and is not resistant to drought. The optimum temperature during the growth period is 23-29°C, and it can tolerate a low temperature of -7°C. It is not harmful as long as good fertilizer and water conditions are maintained under high temperature in summer. Pomelo requires a lot of water, but it is not resistant to waterlogging, prefers shade, and especially likes scattered light. Zhejiang Province has a mid-subtropical monsoon climate, especially in the southeast coast, with no extreme heat in summer and no severe cold in winter, with an annual average temperature of 16-17.8°C, an annual precipitation of more than 1,300 mm, an annual average humidity of 80%, and a frost-free period of up to 322 days. Cultivation and growth of pomelo. Pomelo is deep-rooted, requires deep soil layer, and is not strict with soil. It can grow in soil rich in organic matter and pH 5.5-7.5.
