凉薯又名豆薯、地瓜,属豆科,以其根呈薯块状而得名。原产亚洲热带地区,我国南部及西南各省多有栽培。为一年生草本蔓性植物,薯块多汁而甜脆,可作水果生食,或作蔬菜炒食,亦可作饲料。老熟块根富含淀粉达10—22％左右。种子、茎叶含有鱼藤酮,对人畜有毒,可用以毒鼠或杀虫。 Yam potato, also known as sweet potato, sweet potato, is a legume, potato root tuberous named. Originating in tropical Asia, many provinces in southern and southwestern provinces have cultivated. For the annual herb creeping plants, succulent succulent and sweet crisp, can be used as raw fruit or vegetables for food, but also for feed. Ripe roots rich in starch up to about 10-22%. Seeds, stems and leaves contain rotenone, toxic to humans and animals, can be used to poison rats or insecticides.