Primary Productivity Response of Astragalus adsurgens and Medicago Sativa to Interspecific Competition in Weibei Arid Highland on the Loess Plateau of China Interspecific Cross-Incompatibility Between Astragalus adsurgens Pall.and A.cicer L. Effect of medium composition on the growth and secretion of cultured root of Astragalus adsurgens Pall Comparison Study on Several Quality Characters of Wild and Cultivated Astragalus adsurgens Pall. Studies on Mechanism of Hydraulic Lift by Astragalus adsurgens Effects of AM fungi on the growth and drought resistance of Astragalus adsurgens Pall. under water stress Selection of Ethionine-resistant Variant in the Forage Legume Astragalus adsu rgens Pall. Germination Test Standardization for Seeds of Artemisia Sphaerocephala Krasch and Astragalus Adsursens Pall