我们有时看到用山定子作砧木的苹果大树下,所长出来的根蘖,它的叶形已经不像原来的山定子了,叶片加大,有时加厚,这是什么原因呢?因为山定子砧木是用种子播种出来的,在一般情况下,又多用2年生的山定子作砧木,它本身是一株杂种幼苗,在阶段性上说是幼龄的,它的遗传性是不稳固的、动摇 Sometimes we see the root of an apple tree with the mountain statues as the rootstock. The root tillers that grow out of it are different from the original mountain statues, and the leaves are thicker and sometimes thickened. What is the reason? Mountain stator rootstock is sown with seeds, under normal circumstances, and more with 2-year-old mountain statues as rootstock, which itself is a hybrid seedlings, in terms of stage is young, and its heredity is not stable Shaken