沙打旺原产我国,为寒地野生植物,在东北、华北、西北及西南地区均有野生分布,垂直分布在700—3150米之间。山东、河南、河北黄河故道一带,常用作绿肥或改造沙荒和盐碱地。我们从1975年开始,先后在陕西延安地区、宁夏固原、同心等地进行荒山撒播和飞机播种试验,获得良好效果。现根据多年来试验研究情况,将沙打旺的优良特性及其作用概述如下: 一、沙打旺的特性 (一)适应性。沙打旺适应性强,具有耐旱、耐寒、耐瘠薄、耐沙荒、盐碱 Sandy Wong native to China, the wild plants in the cold, in the northeast, north, northwest and southwest regions have wild distribution, vertically distributed between 700-3150 meters. Shandong, Henan, Hebei Yellow River old course, commonly used as green manure or rehabilitate desertification and saline land. We started from 1975, successively in Yan’an in Shaanxi Province, Ningxia Guyuan, concentric and other places of barren hill sowing and aircraft sowing test, and achieved good results. According to many years of experimental research, the excellent characteristics of Astragalus and its role are summarized as follows: First, the characteristics of Astragalus a. Adaptability. Struggling adaptability, with drought, cold, barren, drought-resistant, saline-alkali