杜松为针叶常绿树种,树形优美,树冠塔形或圆柱形,是我国北方一些地区优良的城市绿化及观赏树种之一。因杜松播种、扦插繁育困难,所以限制了它的大面积发展。但采用杜松嫁接繁殖成活率却高达96％,而且苗木生长快。其嫁接繁殖技术如下: 一、砧木和接穗的选择 Juniper is an evergreen coniferous tree species with beautiful tree shape and tower crown or cylinder shape. It is one of the finest urban greening and ornamental tree species in some parts of northern China. Due to sown juniper, cutting propagation difficult, so it limits the large-scale development. However, the survival rate of juniper grafting but as high as 96%, and seedlings grow fast. Its grafting and breeding techniques are as follows: First, the choice of rootstock and scion