檢視茎（植物的六大器官之一）的原始碼

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| style="background: #008080" align= center|  '''<big>茎 （植物的六大器官之一）</big> '''

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[[File:U=368857323,851424555&fm=26&gp=0.jpg|缩略图|居中|[https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fwww.lqxinlimenye.com%2Fuploads%2Fallimg%2F170822%2F1-1FR21P204313.jpg&refer=http%3A%2F%2Fwww.lqxinlimenye.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=jpeg?sec=1624241793&t=66c4d80f08d4530349e0d28e366d961c原图链接][https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E8%8C%8E&step_word=&hs=0&pn=9&spn=0&di=1980&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=368857323%2C851424555&os=556494049%2C3485896843&simid=3399934652%2C159037140&adpicid=0&lpn=0&ln=1857&fr=&fmq=1621649787180_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=https%3A%2F%2Fgimg2.baidu.com%2Fimage_search%2Fsrc%3Dhttp%3A%2F%2Fwww.lqxinlimenye.com%2Fuploads%2Fallimg%2F170822%2F1-1FR21P204313.jpg%26refer%3Dhttp%3A%2F%2Fwww.lqxinlimenye.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1624241793%26t%3D66c4d80f08d4530349e0d28e366d961c&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bsqxtgst4jgyj_z%26e3Bv54AzdH3FzitfitAzdH3F8lmmc0_z%26e3Bip4s&gsm=7&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 来自 百度 的图片]]]

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茎是根和叶之间起输导和支持作用的植物体重要的营养器官。[[茎尖]]与根尖类似，具有无限生长的能力;茎尖不断生长，陆续产生叶和侧枝，除少数地下茎外，共同构成了植物体地上部分庞大的枝系。茎的发达程度与植物的生活周期密切相关，多年生木本植物较一年生草本植物具有更为发达的茎。同属营养器官,茎与根具有基本类似的一般结构，但是适应于输导和支持两大主要功能，茎又表现出与根不同的许多特殊结构。