酸刺(Hippophae rhamnoides L.)又名沙刺、醋柳,属胡颓子科沙棘属,落叶灌木或乔木,具粗壮棘刺,群众叫狼牙刺。适应性强,用途多,耐干旱瘠薄,抗盐碱风沙、不畏严寒酷暑,是一种优良固沙树种。酸刺木材坚硬,材质优于许多杨柳。叶是优良饲料,上等绿肥,嫩叶可作黑色染料。花是好蜜源,并可提炼香精。果实富含维生素。果肉种子均含油脂,叫醋柳油(或沙棘 Acid thorns (Hippophae rhamnoides L.), also known as sand thorns, vinegar willow, is an Elaeagnus Seabuckthorn, deciduous shrubs or trees, with thick thorns, the crowd called Spike. Strong adaptability, versatility, drought-resistant infertility, anti-saline wind and sand, fear of cold and heat, is an excellent sand-fixing species. Acacia wood hard, material is better than many willow. Leaves are excellent feed, fine green manure, leaves can be used for black dye. Flower is a good source of honey, and refining essence. Fruit is rich in vitamins. Fruit seeds contain fat, called vinegar Liu oil (or sea buckthorn