1, sour plum, also called green plum, plum, is a kind of fruit. It belongs to Dipterocarpaceae, and the adult Prunus mume is about 4~5m high and the DBH is about1.2 m.. The bark is bluish gray. Young branches and leaves are densely stellate hairy. Thymus with small white flowers. Fruit subglobose, with 2 long and 3 short spines enlarged by sepals.
2. The fruit of ebony is nearly spherical, 2-3 cm in diameter, yellow or greenish white, pilose and sour; Sticking pulp and core; The nucleus is oval, the top is round and has a small protruding tip, the base gradually narrows into a wedge shape, the sides are slightly flat, the abdominal edges are slightly blunt, there are obvious longitudinal grooves on the ventral surface and the dorsal edges, and the surface has honeycomb holes. The flowering period is winter and spring, and the fruit period is May-June (in North China, the fruit period is extended to July-August).
Extended data
growing environment
The growth cycle of sour plum leaves in autumn, flowers and fruits in winter, and leaves and fruits in spring and summer. Prunus mume blooms in the twelfth lunar month. The flowers are white and bear fruit after the flowers wither. At the beginning of the fruit, the color is green, just like the color of leaves. By the end of April, Prunus mume is basically mature. The fruit is about 2-3 cm in diameter, pale yellow in color and a little bitter in taste.
The core is a bit oval, hard with a sharp point and uneven surface. In May, the fruit turns yellow, and the taste is different from the original. The acid is sweet, but you should not eat more, otherwise, your teeth will be sour.
Prunus mume is suitable to be planted in subtropical climate with wet summer and dry winter, and it is a light-loving plant growing in summer wetland zone. The temperature requirements in flowering and young fruit periods are particularly strict, and the number of days above 15℃ in flowering period reaches 30%.
Its growth and fruiting require moderate rainfall. Generally, the annual rainfall is 800-2000 mm, so that Prunus mume can grow and bear fruit well. The soil requirements for the growth of Prunus mume are loam, sandy loam and clay loam with deep soil layer, low groundwater level and good drainage performance.
The fruit shape of Prunus mume is nearly round, the peel color is light yellow-green, and the color is uniform, and the color of the second-grade peel allows a little blush; Domestic similar products are generally oval in shape, with light turquoise skin and ripe fruit yellow.
The sunny side is flushed, reddish brown to deep red, and the flesh is yellowish. The average weight of a single fruit is 28 grams, and the flesh is thick and small, and the edible rate is >: 89%, the pulp is crisp, the aroma is mellow, the flavor is unique, the acid is sweet, and the domestic similar products are slightly bitter or astringent. Plum contains 7.0% soluble solids and total acid content >: 4.3%, rich in trace elements, amino acids and vitamin C.
References:
Baidu Baidu-sour plum