檢視药用大黄的原始碼

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[[File:U=3665653093,424236551&fm=26&gp=0.jpg|缩略图|居中|[https://gimg2.baidu.com/image_search/src=http%3A%2F%2Finews.gtimg.com%2Fnewsapp_bt%2F0%2F11673192588%2F641.jpg&refer=http%3A%2F%2Finews.gtimg.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=jpeg?sec=1617846457&t=5ea98ac3038e24500a56552fab814da9 原图链接][https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E8%8D%AF%E7%94%A8%E5%A4%A7%E9%BB%84&step_word=&hs=0&pn=5&spn=0&di=6710&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=3665653093%2C424236551&os=1201560481%2C2034801848&simid=0%2C0&adpicid=0&lpn=0&ln=1091&fr=&fmq=1615254431842_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%2Finews.gtimg.com%2Fnewsapp_bt%2F0%2F11673192588%2F641.jpg%26refer%3Dhttp%3A%2F%2Finews.gtimg.com%26app%3D2002%26size%3Df9999%2C10000%26q%3Da80%26n%3D0%26g%3D0n%26fmt%3Djpeg%3Fsec%3D1617846457%26t%3D5ea98ac3038e24500a56552fab814da9&fromurl=ippr_z2C%24qAzdH3FAzdH3Fxo_z%26e3Bqq_z%26e3Bv54AzdH3Fv4ft1AzdH3Fdadaa9naAaAOFOaa&gsm=5&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 来自 百度 的图片]]]
 
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[[药用大黄]]（拉丁学名：Rheum officinale Baill.），为蓼科大黄属多年生高大草本植物。高可达2米，根及根状茎内部黄色，粗壮，基生叶大型，叶片近圆形，[[稀极宽卵圆形]]，叶腋具花序分枝；大型圆锥花序，分枝开展，花成簇互生，绿色到黄白色；花梗细长，果实长圆状椭圆形，5-6月开花，8-9月结果。 

产于中国陕西、四川、湖北、贵州、云南、河南等地。生于海拔1200-4000米山沟或林下。多有栽培。根状茎及根供药用。该种被《中国药典》收录名为大黄的草药来源。根及根状茎：苦，寒。泻热通便，凉血解毒，逐瘀通经。用于实热便秘，积滞腹痛，泻痢不爽，湿热黄疸，血热吐衄，目赤，咽喉痛，瘀血经闭，跌打损伤。