四棱豆[Psophocarpus tedragonolobus(L. )DC. ],别名翼豆、杨桃豆、四角豆、四稔豆等。原产非洲及东南亚,现在巴布亚新几内亚,缅甸、印度、孟加拉、斯里兰卡等国广泛栽培。我国广东沿海、台湾、云南等地也有百年以上的栽培历史。目前,四棱豆的栽培区域渐次向北方地区扩展。1998年德州市农科所从海南引种,当年试种成功,生长结荚期长达7个月,亩产可达4000kg。四棱豆全身是宝,其嫩荚可切丝做成色拉或炒食,嫩茎叶可做汤料,豆粒可煮、可炒或榨油,块根也可食用。老熟茎叶是优质的饲料和绿肥,其根系密生根瘤,具有很强的固氮 Pseudotrichum [Psophocarpus tedragonolobus (L.) DC.], Alias ​​wing bean, star apple, bean, bean and so on. Native Africa and Southeast Asia, now Papua New Guinea, Myanmar, India, Bangladesh, Sri Lanka and other countries widely cultivated. China’s Guangdong coast, Taiwan, Yunnan and other places also have more than a century of cultivation history. At present, the cultivated area of ​​Pyramidia gradually expands to the north. In 1998, Dezhou Agricultural Science Research Institute was introduced from Hainan. In that year, it was successfully planted and the pod growing period was as long as 7 months with a yield of 4,000 kg per mu. Four-legged beans body is treasure, the tender pods can be made of salad shred or fried, tender stems and leaves can be soup, beans can be boiled, fried or pressed oil, roots can also be eaten. Mature stems and leaves are high-quality feed and green manure, the root system of dense nodules, with a strong nitrogen fixation