沙打旺(Astragalus adsurgens Pall.)为豆科黄芪属多年生草本植物。自1975年引入内蒙古栽培以来,在各地都表现了适应性强、产草量高、抗寒耐旱、耐瘠抗盐碱、抗风沙等优点。除了作饲草外,还有改良盐碱土,防风固沙,保持水土,沤制绿肥等用途,很值得在我区推广种植。但是,由于我区无霜期短、积温低,引种后不结子,或种子产量很低,是生产上迫切要求解决的问题。为此,我们从1978年起,开展了提高沙打旺结实率的研究。经过 Astragalus adsurgens Pall. Is a legume Astragalus perennial herb. Since it was introduced into Inner Mongolia in 1975, it has shown the advantages of strong adaptability, high yield of grass, cold and drought tolerance, resistance to salt, alkalinity and sandstorm. In addition to forage grass, but also to improve the saline-alkali soil, wind and sand, soil and water conservation, cropland green manures and other purposes, it is worth promoting the planting in our area. However, due to the short frost-free period, low accumulated temperature, no knot after introduction, or low seed yield, it is an urgent problem to be solved in production. To this end, we have conducted research on increasing the solidity rate of sandstone since 1978. after