Abstract: The ＂Chang Le＂ nitrate rare earthis selected in this research, cultivated forages, natural grassland, forage shrubs and semi-shrubs are applied by rare earth using different application methods and concentration of rare earth. The results showed that the application of rare earth to pasture has significantly increased yield ; seed soaking or foliar spray can he used for sowed forages when applying the rare earth ,while only foliar spray can be used for natural grassland. The appropriate foliar spray application time is from the early growth stage to beginning of flowering; compared to foliar spray, soaking is better,with the advantages of economy ,simple ,easy to promote ,etc. ;and with the effectiveness of improving the seed germination rate and seedling stage growth.Different types of forages have different sensitivities to rare earth.