头道湖治沙站1961年春季直播造林的沙拐枣,十几年来长势较好,固沙效果也较显著。现总结如下。一、沙拐枣的分布及其特性沙拐枣(Calligonum mongolicum Turcz)系灌木,主要分布在我国西北的内蒙、新、甘、青等省区。从1959年开始,我们从内蒙引进少量试种。我区只在中卫固沙林场等地有少量生长。沙拐枣适应性较强,高1～3米,一年生小枝纤细,灰绿色,2～3年生呈灰色,有细棱,不剥落;叶鳞状、膜质、互生,托叶鞘状,节部膨大,瘦果外有刺毛。根系发达,水平 Shaodao Lake sand control station broadcast live in the spring of 1961 Shacha jujube, more than a decade to grow better, the effect of sand fixation is also more significant. Now summarized as follows. First, the distribution of Calligonum Calligonum Calligonum mongolicum Turcz shrubs, mainly distributed in northwestern Inner Mongolia, China, Gan, Qing and other provinces and autonomous regions. Since 1959, we have introduced a small amount of test plants from Inner Mongolia. My area only in Zhongwei Sands and other places have a small amount of growth. Sand jujube adaptability, high 1 to 3 meters, an annual branchlets slender, gray-green, 2- to 3-year-old gray, with fine edges, does not peel; leaf scales, membranous, alternate, stipules sheath-like, Inflated, acne outside hairy. Roots developed, level