The difference of salt tolerance at germination stage of 4 species leguminous grass was preliminary studied via NaCl levels: 0,0.6%,1.2%,1.8%,2.4%.The result showed: the salt tolerance of the four was difference.Medicago stativa and Trifolium pratense were best.Trifolium repews was the second and Melilotus Adans was the last;The correlation between the length of radicle and salt concentration was negative intimate;The germination process was retarded by the high salt concentration sharply;Seed vigor was also determined via 2,3,5Triphenyl Tetrazolium Chloridsde(TTC) test.The results of TZ test and germinating trial were coincidence.
