1、校接。即冬季把三倍体毛白杨枝接在大官杨枝段上,接后窖藏,春季扦插。 (1)接穗削取。把三倍体毛白杨条子剪成15cm左右作接穗,并保留2-3个芽。将接穗用刀从最下边的一个芽开始两侧削成楔形斜面(斜面应平滑),长约2厘米左右,外厚内薄。 (2)砧木的处理。选择稍粗于接穗的大官杨枝段做砧木,其长8cm左右,用劈接刀从砧木断面的中心开口,劈口长2- 1, school. In winter, the triploid Populus tomentosa branches in the high-Yang branch, then hoarding, spring cuttings. (1) scion cutting. Cut the triploid Populus to about 15cm, and keep 2-3 buds. The scion with a knife from the bottom of the bud on both sides began to cut into a wedge-shaped bevel (bevel should be smooth), about 2 cm long, thick outer thin. (2) stock processing. Select a little rough scion of the king Yang branches do stock, about 8cm long, with a split knife from the center of the opening section of the rootstock, split mouth long 2-