千年桐比三年洞生长旺盛,单株产量高,结果期长,不害枯萎病。其缺点是,直播造林常有一半以上植株为不结果的雄树;而在结果雌株中,也良莠不一,产量悬殊,单产很低,一般仅30斤上下;油质也较三年桐稍逊。广西林科所和崇左县油桐试验站,从1965年开始,开展了千年桐高产优良无性 Millennium Tong than three years of strong growth in the hole, high yield per plant, the results of a long period of no wilt disease. The disadvantage is that more than half of live plants are usually male trees with no result. In the female plants, there are also mixed and poor yields with low yield, usually only 30 kg; the oil quality is also lower than that of three years Tong less inferior. Guangxi Linke and Chongzuo Tung Tung Experimental Station, from 1965 onwards, carried out a thousand years Tong high yield asexual