1958—1959年,山西省林业科学研究所造林育苗组采用了无性杂交的方法,选择萌芽力强的加拿大杨(或箭干杨)枝条为砧木,毛白杨枝条为接穗进行了嫁接,现将共繁殖方法及生长情况介绍如下:一,繁殖方法:1.劈接法(又叫枝接法):在早春树液流动前,选择一年生姆指粗、生长健壮、无病虫害的加拿大杨 From 1958 to 1959, the afforestation and nursery team of Shanxi Forestry Research Institute adopted the method of no-sex hybridization. Select the buds of Populus euphratica (or Jiangan Yang) branches as the rootstock and the branch of Populus tomentosa as the scion, Propagation methods and growth are described below: First, the breeding methods: 1. Split-law (also known as stick method): before the flow of sap flow in early spring, choose a year thick thumb, robust growth, no pests and diseases of Canada Yang