黑枣为柿树科柿树属落叶乔木,是嫁接柿树的优良砧木。黑枣在我国分布较广,北自河北长城以南,西北至陕西、甘肃南部,南至东南沿海、两广及台湾,西南至西南三省均有分布。黑枣树干挺直,树冠圆整,适应性强,是园林绿化的好树种,可用作行道树或庭荫树。黑枣高可达20m,树皮灰色,呈方块状深裂,幼枝被灰色毛,冬芽先端尖。叶长椭圆形,长椭圆状卵形,叶端渐尖,叶基部楔形或圆形,叶表光滑,叶背灰 Jujube is persimmon tree persimmon deciduous tree, is an excellent rootstock grafted persimmon. Black jujube widely distributed in our country, north from the Great Wall south of Hebei, northwest to Shaanxi, southern Gansu, south to the southeast coast, Guangdong and Guangxi and Taiwan, southwest to three provinces are distributed. Black jujube trunk upright, crown round, adaptable, is a good species of landscaping, can be used as street trees or shade trees. Black jujube up to 20m, bark gray, rectangular block was split, young branches were gray hair, winter bud apex. Leaves oblong, oblong-ovate, apex acuminate, leaf base cuneate or rounded, smooth leaf blade, leaf blade gray