西生菜品种繁多。本研究中心从1982年起引进品种达70多个,经鉴定认为以下品种较适合本地裁培。现按其结球与否分类介绍如下。(一)结球西生菜爽脆(CRISPY):来源于美国。突出表现是叶球大而紧实,外叶少,高产,优质,抗病性强。叶球绿白色,球状,单球重约0.8公斤,净菜率70.4%。叶近圆形,叶缘缺刻浅,叶面微皱,叶片较厚,外叶深绿色。植株开展度46厘米,高17厘米。质爽脆,味清甜,适生食和熟食。耐顶烧病,对霜霉病、菌核病和软腐病抗性也较强。冷凉环境下才能结球,在高温环境下易抽苔。适播期为10—12月份,最适 West lettuce variety. The research center introduced more than 70 varieties since 1982, and the following varieties have been identified as more suitable for local cultivation. Now according to their cue classification as follows. (A) ball lettuce crisp (CRISPY): from the United States. Prominent performance is large and tight leaves, leaves less, high yield, high quality, disease resistance. Leaf green white ball, spherical, single ball weighs about 0.8 kg, net food rate of 70.4%. Nearly circular leaves, lack of leaf margin shallow, folds slightly wrinkled, thick leaves, dark green leaves. Plant development degree of 46 cm, 17 cm high. Crisp texture, taste sweet, suitable food and cooked food. Top-resistant disease, downy mildew, sclerotinia and soft rot resistance is also strong. Cold conditions to the ball, easy to moss in high temperature environment. Suitable sowing period of 10-12 months, the most suitable