采用分层调查的方法研究了 14年生银杏嫁接植株树冠上枝、花、种子的分布格局及其相互关系 .结果表明 ,长枝、短枝、短果枝和花主要分布在树冠中部 ,且分布比较均匀 .树冠上从上到下 ,长枝平均年龄逐渐增大 ,分枝角度逐渐升高 .种子主要集中分布在距地面 180～ 3 2 0cm的体积冠层中 ,这一冠层中的种子数占植株种子总数的 5 1.3 % .不同冠层中枝、花、种子数量之间密切相关 The stratification method was used to study the distribution patterns and the relationships among the branches, flowers and seeds of the 14-year-old ginkgo grafted canopy.The results showed that the long branches, short branches, short branches and flowers were mainly distributed in the middle of the canopy and distributed evenly The crown age increased gradually and the branching angle increased gradually from top to bottom.The seeds were mainly concentrated in the volume of 180 ~ 320 cm from the ground, the number of seeds in this canopy accounted for 5 1.3% of the total number of plant seeds in different canopy branches, flowers, the number of seeds is closely related