人们常用“雨后春笋”来形容事物发展的迅速与兴旺。江南四月,春笋竞相出土。在生长最旺盛的4—5月,一场春雨,一昼夜就可增高0.1—0.3米,40—50天就可成长为幼竹,高度可达12米左右。竹笋为什么能生长得这么快?原来,竹笋的尖端虽然和一般被子植物一样具有一个双层原套的生长锥,但是它的细胞分裂能力却大大超过了一般生长锥。在生长锥以下,还有一段相当长的顶端分生组织区域,包括从生长锥开始向下直至节的出现为止,其长度有0.8—1.5厘 People often use “springing up” to describe the rapid and booming things. Jiangnan April, springing out of competition. In the most prosperous April-May, a spring rain, day and night can be increased 0.1-0.3 meters, 40-50 days can grow into young bamboo, up to a height of 12 meters. Why bamboo shoots grow so fast? It turned out that although the tip of bamboo shoots and general angiosperms have the same double-layer original growth cone, but its ability to divide cells greatly exceeded the general growth cone. Below the growth cone, there is also a rather long apex apical meristem area, including from the growth cone down until the appearance of the node, the length of which is 0.8-1.5 cm