Effects of Rare Earth Elements on Nitrogen, Phosphate and Potassium Assimilation of Suli (P. bretschneideri Rehd)
稀土元素对酥梨叶片氮、磷、钾及其同化能力的影响

Suli (P. bretschneideri Rehd) were sprayed with rare earth elements, Results showed: Rare earth elements could stimulate the absorption of N. P. K by the plant. The net photosynthetic rare of the leaves were significantly increased during the grewing period of the shoot. But the net photosynthetic rate of the leaves were not increased during the flowering period.