山药因其营养丰富,自古以来就被视为物美价廉的补虚佳品,既可作主粮,又可入药。仅从历代文人墨客的诗文中就有不少记载,宋代诗人陆游有:“高梧策策传寒意,叠鼓冬冬追睡期。秋夜渐长饥作崇,一杯山药进琼糜。”同时代的大文豪朱熹也有诗赞誉山药:“欲赋玉延无好语,羞论蜂蜜与羊羹。” Because of its nutrient-rich nature, yam has been regarded as an inexpensive, high-quality supplement since ancient times. It can be used as staple food as well as medicine. Only from the ancient literati poetry, there are many records, the Song Dynasty poet Lu You has: “Gao Qi policy to spread chill, stacking winter and winter to recover from sleep. Gradually growing hunger for the autumn night, a cup of yam into Joan. ”Contemporary literary writer Zhu Xi also praised yams for poetry:“ Yu Yu has no good language, and is shy about honey and sheep.”