Abstract:Soil culture experiment was employed to explore the effects of phosphorus or lime applications on biomass and mineral compositions in two lespedeza species different in Al sensitivity. The results showed that +P treatment could increase the biomass of Al-tolerant species, but not for that of Al-sensitive species. +Ca treatment could augment the root biomass of Al-sensitive species, but not for that of Al-tolerant species. Biomass were enhanced by +P+Ca treatment in both species. Al content in shoots of Al-tolerant species was much lower than that of Al-sensitive species, and no difference in Al content of roots was found. P content in shoots of Al-tolerant species was higher than that in Al-sensitive species only with +P treatment. Contents of Ca, K, Mn and Mg in Al-tolerant species were higher than those in Al-sensitive species, Fe content was contrary. The results suggested that the main limit factor for Al-tolerant species was P deficiency in acid soil. However, Al toxicity was the primary limit factor for Al-sensitive species. Al-tolerant species had some mechanisms to prevent Al transport from roots to shoots, and such tolerant mechanisms could be related with the higher content of P in plants. In addition, Al-tolerant species had the stronger ability to uptake Ca, K, Mg, Mn than Al-sensitive species.