广西栽培的油桐,主要有三年桐(Aleurites fordii Hemsl.)和千年桐(A.montanaWils.)两种。三年桐雌雄同株,不适高温和強酸性土,在柳州以南地区种植,早衰且易罹枯萎病害(Fusarium sp.),往往正值结果旺年,全林遭病燬灭;千年桐雌雄异株,适高温和強酸性土,具高度的抗枯萎病能力。以经济价值而言,三年桐早实,单位产量和子仁含量较高,油质亦较好,但其寿命较短;千年桐结果寿命长,单株产量高,但结果期较晚,并常有一半左右终生不结果的雄株,油质油量亦稍逊。能否结合两种油桐的各自优良性状,一 Guangxi cultivated tung tree, there are three years Tong (Aleurites fordii Hemsl.) And Millennium Tong (A. montanaWils.) Two. Three years Tung female monoecious, unpleasant high temperature and strong acid soil, planted south of Liuzhou, premature aging and easy to fusarium wilt disease (Fusarium sp.), Often positive results in the peak, the whole forest disease by destruction; Different strains, suitable for high temperature and strong acid soil, with a high resistance to Fusarium wilt. In terms of economic value, Tongzao was the best in three years, with high yield per plant and kernel, with good oil quality, but its life span was short. The result was longer and its yield per plant was higher, but the result was later, and Often about half of the male fruitless life, oil quality is also less oil. Can we combine the good traits of two kinds of tung tree, one