给球生菜是叶用离首的一个变种，目前栽培品种较多，但多为从国外引进。早期多在京、津、沪等大城市及沿海城市郊区栽培，近年来有向内地扩展的趋势。结球生菜不仅清香可口，而且营养价值也较高，每IOOg食用部分含蛋白质1～1．4g，碳水化合物1．8～3．Zg，维生素C4～15mm。茎叶 To the ball lettuce is a variant of the leaves from the beginning, the current cultivars more, but mostly imported from abroad. Early in Beijing, Tianjin, Shanghai and other major cities and coastal cities in the suburbs of cultivation, in recent years there is a trend of inward expansion. The romaine lettuce is not only fragrant and delicious, but also has high nutritional value. Each IOOg portion contains 1 to 1.4g of protein and 1.8 to 3 of carbohydrates. Zg, vitamin C4 ~ 15mm. Stems and leaves