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河南新乡专区博爱、孟县、温县、武陟等地,为旧属怀庆府治,该地长期大面积种植地黄、山药、牛夕、菊花四种药材,且质量卓越故有四大怀药之称。在怀药中又以地黄、山药声誉尤著。谨将山药栽培方法简介如下。怀山药(Dioscorea bataus Decnb)为薯蓣科(Diosco-reacea(?))多年生宿根植物。春季由块根生出不定芽,长成新蔓,蔓长可达10尺左右,呈紫绿色,有缠绕性。叶对生有长柄,叶片为心脏形先端尖锐,近似箭头形,网
Henan Xinxiang Special Area Boai, Mengxian, Wenxian, Wuyi and other places, for the old Huaiqing government, the area long-term large-scale cultivation of yellow, yam, Niu Xi, chrysanthemum four herbs, and the quality is excellent, so there are four arms Medicine is called. In Yaoyao, it has a reputation for rehmannia and yams. Here is a brief introduction of yam cultivation methods. Dioscorea bataus Decnb is a perennial perennial plant of Diosco-reacea (?). In the spring, adventitious buds emerge from roots and grow into new vines. The vines grow up to about 10 feet in length and are purple green and entangled. The leaves are long-stemmed, their leaves are heart-shaped apex sharp, almost arrow-shaped, netting