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怀山药为薯蓣科(DiOsCOreaqae)多年生蔓生宿根性草本。茎细长,叶对生或三叶轮生,叶腋间常生球形珠芽(名余零子)。雌雄异株,穗状花序。果实有三稜呈翅状。花期7-8月,果熟期9-10月。地下块根圆柱形,肉质肥厚,生有多数须根。功用:药用其块根,有补脾益肾、健胃化痰作用。产地:产区分布较广,全国大部地区都有栽涪,以河甫新乡地区温县、孟县、武险县、沁阳县、傅爱县等五县产品质量最佳,产量也大,称怀山药丫。浅培方法
Dioscorea yam is a perennial creeping herb of DiOsCOreaqae. Slender stalks, leaves opposite or tri-engined, leaf buds often have spherical buds (name more than zero child). Dioecious, spikes. The fruit has a triangular wing shape. Flowering from July to August, fruit ripening from September to October. Underground roots are cylindrical, with fleshy hypertrophy and many fibrous roots. Function: medicinal roots, Spleen kidney, stomach and phlegm. Origin: The production areas are widely distributed, and most parts of the country are planted. The quality of the products in the five counties of Wenxian, Mengxian, Wuxian, Youyang and Fuai counties in the Hexin Xinxiang area is best, and the output is also large. , called yam medicine. Shallow cultivation method