半夏系天南星科植物半夏Pi—nellia ternata(thunb)Breit的块茎,始载于“神农本草经”,为中医临床常用中药。半夏的块茎含天门冬氨酸、谷氨酸、精氨酸、β—氨基丁酸等成份。具有燥湿化痰、降逆止呕之功能。半夏是当前市场上紧消药材。也是河南省地道品种之一。但是,由于农村土地承包,年年深耕细作,目前野生资源趋于枯竭产量大幅度下降,供需差距愈来愈大,现在医药部门大都以水半夏代用。为了把半夏这一紧缺药材的生产迅速恢复发展上去,尽快缓和或满足医疗和出口之需,半夏人工栽培已成为当务之急。一、半夏的植物学特性半夏为天南星 Pinellia Department of Araceae Pinellia Ternata Pi-nellia ternata (thunb) Breit tubers, originally contained in “Shen Nong’s Materia Medica”, is commonly used in traditional Chinese medicine. Pinellia tuber contains aspartic acid, glutamic acid, arginine, β-amino butyric acid and other ingredients. With dampness phlegm, Jiangni vomiting function. Pinellia is currently on the market tightening drugs. Is one of the authentic varieties in Henan Province. However, due to contracting of rural land and deep plowing every year, the output of wild resources tends to decline drastically, and the gap between supply and demand is getting bigger and bigger. At present, most of the pharmaceutical departments are using the water for half-summer. In order to quickly restore the production of this shortage medicine, and ease or meet the medical and export needs, pinellia artificial cultivation has become a top priority. First, the botanical characteristics of Pinellia Pinellia for the Araceae