文冠果(Xanthoceras sorbifolia Bge.)是我国特有的油料树种。它具有结实早、盛果期长、产量和含油率高、综合利用价值大,以及对干旱、贫瘠、寒冷有较强的适应力等优良特性,是我国北方地区很有发展前途的油料树种。为了提高生产,制订合理的栽培管理措施,了解文冠果花芽分化形成时期很有必要。关于文冠果花芽分化的过程,我们从1974—1975年定时进行取芽处理(8月1日至翌年4月21日);1976年以后进行制片观察和分析。现将观察结果综述如下: Xanthoceras sorbifolia Bge. Is a unique oilseed species in China. It has the characteristics of early fruiting, long fruiting period, high yield and oil content, great utilization value, strong adaptability to drought, infertility and cold. It is a very promising oilseed species in northern China. In order to improve production, develop reasonable cultivation and management measures to understand the formation of flower bud differentiation is necessary. On the process of flower bud differentiation, we took the budding treatment from August 1 to April 21 of the following year from 1974 to 1975. After 1976, we observed and analyzed the production. Now the observations are summarized as follows: