不同砧木锦橙叶片过氧化物酶（ＰＯＸ）活性存在着差异，半矮化砧上锦橙叶片ＰＯＸ活性显著高于乔化砧，叶片ＰＯＸ活性与树高、干粗、节长、树冠体积等生长势指标呈负相关，与叶片质量、光合强度及果实产量呈正相关。因此，可把叶片ＰＯＸ活性作为砧木对嫁接丰产品种性及矮化性早期预测的辅助生化指标。 There were differences in the activities of peroxidase (POX) in different rootstocks. The POX activity in the leaves of the semi-dwarfing angels was significantly higher than that in the Qiaohua anvils. The POX activity, the tree height, stem diameter, node length and crown volume Growth potential index was negatively correlated with leaf mass, photosynthetic intensity and fruit yield was positively correlated. Therefore, leaf POX activity can be used as a rootstock of grafted varieties of high yield dwarfing early prediction of biochemical indicators.