测定了土壤施用除草剂百草枯，西马津和三种销酸铵施肥量对‘元帅’苹果叶中Ｃａ及山梨糖醇含量的综合影响。结果表明，施用西马津加百草枯除草剂与三种施Ｎ量的组合，果树叶中 Ｃ ａ含量均比单独施用百草枯的明显降低，叶的大小及木质部和皮层中山梨糖醇含量有显著的相关性，二年生枝的山梨糖醇含量与叶Ｃａ含量也有密切关系。 The combined effects of soil application of herbicide paraquat, cimazine and three ammonium nitric acid fertilizers on Ca and sorbitol content in ’Marshal’ apple leaves were determined. The results showed that the combination of ximazine plus paraquat herbicide and three application rates of N in fruit leaf C a content were significantly lower than the single application of paraquat, leaf size and xylem and cortex sorbitol content Significantly, the sorbitol content of biennial branches is also closely related to leaf Ca content.