火炬树(Rhus typhina L.)大约是五十代末期从北美洲引入我国。此树种根的萌蘖力极强,水平根发达。不太耐寒(张家口市极端最低气温—26.2℃,年均气温7.5℃,火炬树冬季受冻出现干梢),但耐旱、耐盐碱能力较强,是水土保持和固沙造林的先锋树种。木材可做椽、柱和薪炭柴。果序鲜红,形似火炬,挺立技顶,秋叶变红,景色艳丽,是绿化、美化环境的好树种。 现将火炬树的繁殖技术简介如下。 Rhus typhina L. introduced into our country from North America about the late 50s. The root of this species of sprouting strong, horizontal root developed. Not too cold (Zhangjiakou City extreme minimum temperature of -26.2 ℃, average annual temperature of 7.5 ℃, the winter tree frost appears dry tip), but drought tolerance, strong saline-alkali soil and sand fixation is the pioneer tree species. Wood can be rafters, columns and firewood. Fresh red fruit, shaped like a torch, stand up technology, autumn leaves turn red, beautiful scenery, is green, beautify the environment of good trees. The current torch tree breeding techniques are as follows.