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四棱豆（ｐｓｏｐｈｏｃａｒｐｕｓｔｅｔｒａｇｏｎｏｌｏｂｕｓ）是豆科植物，广泛种植于亚洲南部和东南部，非洲和太平洋西部地区，它的块根、叶、花及荚果均可食用，富含蛋白质、脂肪、矿物质和维生素等．在斯里兰卡则把四棱豆作为一项食物工程进行研究和开发利用，本文对四棱豆的起源、生态学特性、植物学特性、产量、化学成分等进行报道，并指出其开发利用价值和适合在广东、海南和广西种植．
Pseudoterraceria psophocarpustetragonolobus is a leguminous plant widely grown in southern and southeastern Asia, the western region of Africa and the Pacific whose roots, leaves, flowers and pods are edible and rich in protein, fat, minerals and vitamins . In Sichuan, the research and development and utilization of arborvitae are carried out as a food engineering. This paper reports the origin, ecological characteristics, botanical characteristics, yield and chemical composition of arborvitae, and points out its value of exploitation and utilization Plant in Guangdong, Hainan and Guangxi.