一、生物、生态学特性及分布沙棘(Hippophae rhamnoides L.)又名醋柳、酸刺、黑刺,属胡颓子科沙棘属;是具有共生固氮能力的野生落叶灌木或乔木。植株高3～10米,具粗壮棘刺,幼枝密被褐锈色鳞片。叶互生或近对生,线形或线状披针形,长2～6厘米,宽0.4～1.2厘米,两端钝尖,背面密被淡白色鳞片。叶柄短。雌雄异株,花较叶先开放,花期3～4 First, the biological and ecological characteristics and distribution Hippophae (Hippophae rhamnoides L.), also known as vinegar Liu, acid thorns, black thorn, is an Elaeagnus Acacia; is a symbiotic nitrogen fixation of wild deciduous shrubs or trees. Plant height of 3 to 10 meters, with thick thorns, young branches dense brown rust scales. Leaves alternate or near right, linear or linear-lanceolate, 2 to 6 cm long, 0.4 to 1.2 cm wide, blunt tip at both ends, the back of the dense pale white scales. Petiole short. Dioecious, flower leaves open first, flowering 3 ~ 4