The content of N, P, K, Ca Mg, Fe, Zn elements in the leaves of the grafted trees using S2,S3,S4,S5 or PDR54 as interstocks was determined and compared to that of standard trees.

• 本文对以S2、S3、S4、S5和PDR54为矮化中间砧的梨树嫁接树叶片中的矿质元素含量进行了测定,并与乔砧对照树进行了对比分析。