山定子是东北地区沿用多年的苹果实生砧木。它与多数苹果品种嫁接亲和力好,嫁接树比较丰产、抗寒,并且土壤适应性较强(除碱性土壤外)。但实生山定子砧木后代变异大,嫁接树单株间长势不一,产量相差悬殊,影响果园管理和经济效益。如果从山定子中选出优良单系(包括矮化类型)进行营养繁殖,采用山定子营养系砧木,即可避免实生砧木的上述弊病。由于山定子压条不易生根,我们试图通 Hill stator is used in Northeast China for many years of apple rootstock. It has good grafting affinity with most apple varieties, grafting trees are more yield-resistant, cold-tolerant and strong adaptability to soil (except alkaline soil). However, the survivors of wild lotus rootstocks varied greatly. The growth of single-rooted grafted tree varied greatly, affecting the management of orchards and economic benefits. If selected from the mountain stator excellent single (including the dwarf type) for vegetative reproduction, the use of Hill Starch nutrition stock rootstock, you can avoid the rootstock of the above defects ills. As the mountain stator bar is not easy to root, we tried to pass