Abstract: The nutrition of the’Snow flake’pear in Zhao County,Hebei Province,China was studied through the use of the leaf analysis,deficiency symptom investigation and foliar fertilizing.Results show that the’Snow flake’pear has sufficient Ca.Mg,but is deficient in K,B.Fe,Zn.Their balance indexes are 149.7,109.5,52.5,28.5,47.6,54.8 respectively.The use of foliar fertilizer improved the nutrition of’Snow flake’pear.The foliar fertilizer,including calcium,rare earth elements separately raised the activity of the nitrate reductase and superoxidase in the leaf and enhanced the level of saccharide in the fruit.So we suggest that more potassium and micronu trients(B,Zn,Fe)should be applied to this plant in this rig ion around Zhao County and further experiments on the use of approprate foliar fertilizers should be made.This study is a reference in the nutrient diagnosis in the pear.

Key words: Snow flake'pear Nutrient diagnosis, Leaf analysis