Jujube resources in Beijing

Fresh jujube

The jujube planted in the urban area of Beijing is mainly early and middle-ripe fresh varieties, such as Langjiayuan jujube, egg jujube, Zizyphus jujuba, Ma Yabai jujube, Hongcun white jujube, Changxindian white jujube and so on. The maturity period is about the Mid-Autumn Festival on August 15 of the lunar calendar (mid-September of the Gregorian calendar). The old Beijingers are known as "August 15 big jujube". Langjiayuan jujube is the origin and famous product of Beijing, and it is one of the most suitable varieties for fresh food. The fruit juice is sweet, the flesh is crisp, the stone is small, and it is completely red after ripening. In the Qing Dynasty, it is a tribute to the imperial palace with high economic value, strong adaptability and wide range of adaptation. it is a fresh food variety with great promotion value and development prospect.

Dried jujube

Dry jujube varieties are only distributed in a small amount in the urban area of Beijing, and most of them are concentrated in suburban or suburban mountainous and Piedmont areas, such as Miyun jujube, Xiangshan jujube, jujube, tasseled jujube, Xifengshan jujube and so on. Among them, Miyun jujube dried products are famous at home and abroad, its drying rate is as high as 60%, and the dried jujube flesh is thick and elastic, so it is also known as Miyun golden jujube, but it is also known as Miyun golden jujube, but because of its low ability to resist jujube mad disease, it was almost wiped out in the sixties and seventies of the last century, leaving only sporadic planting. Tasseled jujube is the most representative local variety in Beijing, with strong tree potential, high yield, strong adaptability and tolerance to barren.

Ornamental jujube

As Beijing is an ancient capital of previous dynasties, and most of them like to plant jujube trees with ornamental effect, such as gourd jujube (many kinds of gourd type) and dragon claw jujube (many kinds) are planted in the courtyard of the Imperial Palace and Guozijian Street, and a small amount are planted in the residential courtyard. Hulu jujube is deeply loved by growers because of its unique fruit shape, which is suitable for garden greening and beautification, and its fruit can be eaten fresh. Longzao jujube has important ornamental value because of its peculiar tree shape and fruit shape.

Sour jujube

Beijing is rich in sour jujube resources. Wild wild sour jujube trees grow on various hillsides and Piedmont alluvial belts around Beijing. In addition, some fresh sour jujube varieties are planted in cities or suburbs, such as Tiger Eye sour jujube, apple sour jujube, horse tooth sour jujube and so on. A type of sour jujube was found in the investigation and collection of Beijing jujube resources in 2001, which has great potential for development.

Newly introduced and popularized jujube

Beijing suburban counties such as Pinggu, Shunyi, Changping and other places. In the late 1980s and early 1990s, a large number of pear jujube was introduced, and a large number of winter jujube was planted in the mid-1990s. However, due to the influence of various natural conditions, the yield of pear jujube planted in Beijing is higher, but the quality is worse than that of its place of origin. Winter jujube is planted late in some areas of Beijing, the yield is low, and can not be fully mature.