落叶橙采用嫁接建立无性系种子园,能提早开花结实,并提高种子质量和产量,近年来,我们在建立落叶松种子园时,曾采用过髓心形成层贴接、双形成层贴接以及套接等方法。虽然嫁接成活率都比较高,但由于嫁接所要求的穗条比较长(10厘米左右),接穗供不应求,因而影响着建园速度。为了提高优树穗条的利用率,我们于1979年在雁北地区薛家庄林场,进行了芽接试验。当年成活率达83%,抽梢率85%,新梢长10.8厘米,收到了较好的效果。 Deciduous orange grafted by cloning seed orchard, early flowering and fructification, and improve seed quality and yield, in recent years, we have established the larch seed orchard, had used the formation of the core-ply affixed, dual-layer-forming layer and Socket and other methods. Although the grafting survival rate is relatively high, but because of the required grafting longer (about 10 cm), scion in short supply, thus affecting the speed of the park. In order to improve the utilization rate of excellent tree spikes, we conducted a budding test in 1979 in Xuejiazhuang Forest Farm, Yanbei District. In the same year, the survival rate was 83%, the rate of shoot-tip 85%, the length of shoot 10.8 cm, and received good results.