Write an explanatory article about litchi, 450 words, not Baidu.

Speaking of litchi, everyone is familiar with it. Today I will introduce litchi to you. Litchi is a famous fruit in Lingnan, which belongs to subtropical precious fruit and one of the four famous fruits in Lingnan. It originated in southern China and has been cultivated for more than 2000 years. Among them, the fruit king litchi, especially the variety commonly known as "glutinous rice paste", has a small core and sweet meat. It is entirely conceivable that Su Dongpo's "300 lychees a day, and he will not hesitate to grow up to be a Lingnan person" shows the true feelings of satisfaction. Litchi is an evergreen tree with a height of 30m in the field and a DBH of1m. Bark grayish brown, undivided. Even-numbered pinnate compound leaves alternate, with 2-4 pairs of leaflets, oblong-lanceolate, and 6- 12 cm long. Flowers are small and apetalous, forming a terminal panicle. The fruit is spherical or ovoid, red when it is ripe, with obvious protruding nodules on the peel, brownish red seeds, flowering in March-April and fruit ripening in May-August. I like light, warm and humid climate and deep acidic soil rich in humus, and I am afraid of frost. At present, there are more than 100 litchi varieties in China and more than 60 in Guangzhou, which are widely distributed in Conghua, Zengcheng and several suburbs in Guangzhou. Litchi is famous for its unique fruit shape, pleasing color, creamy pulp, sweet and crisp, sweet and good color and taste. Excellent varieties include glutinous rice paste, cinnamon, princess smile and hanging green. The number of Huai branches is the largest, accounting for about 70% to 80% of the total output. The quality of litchi is best with cinnamon and glutinous rice paste. Guiwei is attractive for its crisp and sweet meat, while glutinous rice paste is famous for its small core, thick meat and rich juice. Always use "Bicun glutinous rice cake",

"Guiwei" and "Zengcheng Gualv" are also called "Three Unique Litchi". Among the three outstanding artists, Zengcheng Guaqing is the most precious and has been listed as a tribute by the imperial court. "Zengcheng hangs green", the red shell is green, four points are slightly green, and six points are dividends. Every litchi is surrounded by a green line. The pulp is white and crystal clear, sweet and refreshing, and has a unique flavor. The hanging green tree, which lives in the hanging green garden in Licheng Town, Zengcheng, is the ancestor of hanging green litchi varieties. The tree is more than 400 years old and more than 5 meters high. Several generations of Gualv descendants have been successfully cultivated, and more than 65,438+000 plants have been planted in several towns and villages in Zengcheng. Litchi is not only delicious, but also its smell can kill insects. However, although litchi is delicious, it can kill insects, but if you eat too much, you will get angry and get sick. So I advise you to eat less, and don't eat too many litchi branches for a moment's pleasure, in exchange for getting sick.