四楞豆,地上长豆,地下结薯,全身窗含蛋白质,有高蛋白植物之称。它是一种粮、油、菜、肥兼用的多年生藤蔓热带作物。株大、枝叶茂、丛生卷须,叶片心脏形,花蓝或淡紫色,豆荚横切椭园形,荚长10—20厘米,为绿、紫或红色,荚有四棱,故得名“四楞豆”。种子象豌豆,大而圆,为褐、灰、黑或杂色。四楞豆的种子含蛋白质34—40％,含脂肪17％左右。嫩豆荚含蛋白质1.9—2.9％和丰富的维生素,是幼嫩多汁富有营养的蔬菜。鲜叶中含蛋白质5.7—15％,花含蛋白质5.6％。以花、叶作汤,将花用油煎调后,味似蘑菇。怒江两岸的傣族以叶做成凉菜, Four-stranded beans, long beans on the ground, underground tubers, the body window containing protein, said the high protein plant. It is a perennial vine tropical crop that uses both grain, oil, vegetables and fertilizer. Stalks, foliage, tufted tendrils, heart-shaped leaves, flower blue or lavender, pod transverse cross-elliptical, pods 10-20 cm long, green, purple or red, pod has four edges, it is named "four Frog beans. Seeds resemble peas, large and round, brown, gray, black or mottled. Four-stalk beans contain 34-40% of the seeds, containing about 17% fat. Soft bean pods contain 1.9-2.9% protein and rich in vitamins, juicy and nutritious vegetables. Fresh leaves contain 5.7-15% protein, flower protein 5.6%. With flowers, leaves for the soup, the flowers fried tune, like mushrooms. Numen on both sides of the river to make cold dish leaves,