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刺楸是五加科刺楸属(Araliaceae kalopanax)的一种落叶乔木。我省多在秦巴山区林中散生,当地有些社员也在宅旁栽植。由于刺楸生长快,材质好,纹理美观,适做家具,林中成材的多被群众砍伐,现濒于绝迹。根据几年的试验,该树种播种和扦插育苗均很困难,仅凭林下有限的根蘖苗繁殖,极大地限制了这个树种的恢复和发展。为了探求刺楸有效的繁殖方法,我们于1981年12月在我校实习农场苗圃对引种栽培的3年生和6年生刺楸大苗,进行了根型和根系发育的初步研究。
Catalpa bungei is a deciduous tree of the genus Araliaceae kalopanax. In our province, there are many scattered trees in the forest of Qin and Ba mountains. Some local members also planted houses beside them. As Katsura grow fast, good material, beautiful texture, suitable for furniture, more than the forest timber was cut down by the masses, is on the verge of extinction. According to several years of experiments, it is very difficult for the species to seed and cut the seedling, and only the limited root and tillering seedlings under the forest can greatly limit the recovery and development of this species. In order to explore the effective breeding method of Katsurase, we conducted a preliminary study on root and root development of 3-year-old and 6-year-old Castanopsis kawakamii seedlings which were introduced and cultivated in our nursery in our school in December 1981.