Efects of Ni pollution on the absorption and accumulation of mineral nutritious elements in wheat seedling

The effects of Ni stress on the absorption and accumulation of Cu，Zn，Fe，Mn，Ca and Mg in the stems and leaves of wheat seedling were studied．The results show that with the increase of Ni content in the soil．the growth of wheat seedling is restrained ，and the biomass is reduced ．As a result，the accuYnulation and the contents of Cu，Fe，Ca and M g in wheat seedling decrease；however．the accuYnulation and the contents of Zn and Mn increase．The identity of the accumulation rate and its regularity of these six mineral elements show that the poisonousness of Ni is correhted withthe imbalan ce of metabolism of mineral nutritious elements．