看起来象是随意伸展的树木枝叶之间,也有它的奥秘。日本大阪市钟纺丸研究所的本多久夫发现,为了疏密有致,充分采光,树木的枝叶是按一定的规律伸展的。本多先生和美国菲亚查尔德热带植物园的丁·费歇尔博士一道,选取遍生于东南亚一带的榄仁树(Terminalia catappa)为研究对象。这种树分枝规则,呈平面伸展。他们实测的平均值是:主干与主干上两个分枝长度之比为1:0.94和1:0.87。分枝在主干上的角度,长枝为24.4度,短枝为36.9度。再上一级的分枝,长枝上长短分枝的位置和角度则左右交替(图1)。他们用电子计算机将每一分枝上树叶的宽度画成圆,从上而下一直画到树干周围(图2)。先将树枝长度比例按实测值固定不变计算, Looks like the branches and leaves of trees are free to stretch, but also has its mysteries. Benjomi Kobayashi Institute of Osaka, Japan found that, in order to sparsely populated, full lighting, the branches and leaves of trees are according to a certain law extension. Mr. Bean and Dr. Ding Fischer, Ph.D., from the Fiiachide Tropical Botanical Garden in the United States, selected Terminalia catappa that was born in Southeast Asia as the research object. This tree branch rule, was flat. Their measured average is: the ratio of the length of the two branches on the trunk to the trunk is 1: 0.94 and 1: 0.87. Branches in the trunk point of view, long branches of 24.4 degrees, short branches of 36.9 degrees. On the next level of branch, the position of the branch on the long branches and the angle is about left and right (Figure 1). They used computers to draw the width of the leaves on each branch into a circle, drawing them from top to bottom (Figure 2). First, the proportion of the length of the branches fixed by the measured value of the same,