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白刺(Nitraria sibirca Palls),旱生耐盐,是一种优良的水土保持灌木树种,在甘肃定西主要分布于黄土盐碱沟沟底、沟坡、陡崖和碱滩。甘肃中部黄土丘陵沟壑区,沟壑面积一般占总土地面积的11％～18％,其中不少为盐碱沟,而在这些地方能生长的树种很少,一般除了白刺就是柽柳。因此,对于黄土沟壑的植物防治,特别是盐碱沟的防治,白刺是一个难得的树种。为此,我站1988～1991年对其生长适宜性及生态、经济效益进行了研究。
Nitraria sibirca Palls is a good species of soil and water conservation shrubs. In Dingxi of Gansu, it is mainly distributed in the base of ditch saline soil, ditch slope, steep cliff and alkali beach. Gully areas in the Loess Plateau in central Gansu, gully area generally accounts for 11% to 18% of the total land area, many of which are saline caverns, and in these places can grow very few species, in general, except for the white thorn is Tamarisk. Therefore, for the loess gully plant control, especially the prevention and treatment of saline caverns, Nitraria is a rare species. For this reason, I studied the growth suitability, ecological and economic benefits from 1988 to 1991.