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文冠果(Xanthoceras Sorbifolia Bunge)是我国特有的油料树种,具有耐寒、耐旱、适应性强、结实早、出油率高等特点。但因长期自然杂交实生繁殖,后代分离变异大,造成类型复杂,良莠不齐;既有少量丰产优株;也有低产或不结实的“骡子树”。据调查,后者有时可占总数的12～16％,从而大大影响单位面积的产量。为了逐步实现文冠果栽培的良种化,必须采用无性繁殖方法,而嫁接技术则是当前
Xanthoceras Sorbifolia Bunge is a peculiar oilseed species in our country, which has the characteristics of cold tolerance, drought tolerance, strong adaptability, early fruiting and high oil yield. However, because of long-term natural hybridization, the separation of offspring varies greatly due to the long-term natural hybridization. As a result, the type is complex and varies greatly; both the small amount of high yielding superior strains and the “mule trees” of low yielding or low quality are also found. According to the survey, the latter can sometimes make up 12-16% of the total, which greatly affects the yield per unit area. In order to achieve the gradual progress of the cultivation of the Xanthoceras sorbifolia, it is necessary to adopt asexual reproduction method, while the grafting technique is the current