莴苣又称莴笋,其茎嫩而肥大,质脆味美,营养丰富,既可用来炒菜或凉拌生食,也可盐渍、糖渍,是人们喜爱的蔬菜品种之一。近年来,经实验摸索出一套莴苣夏植高效栽培技术,其主要技术经验如下:一、选种低温催芽夏植莴苣生长期正值高温干热季节,因此须选用耐热,不易抽薹、且抗病、商品性好,适于夏秋栽培的中、晚熟的优质高效良种。播前先将种子用凉水浸泡8～12小时,待种子吸水率为70%～80%时,再用湿纱布包好,置于冰箱冷藏室或悬 Lettuce, also known as lettuce, its stem tender and hypertrophy, crisp and delicious, nutritious, both for cooking or salad raw, but also salted, candied, is one of the favorite vegetable varieties. In recent years, the experiment explored a set of efficient summer cultivation of lettuce cultivation techniques, the main technical experience is as follows: First, the selection of low-temperature germination summer planting lettuce positive hot dry season, it is necessary to use heat-resistant, easy to bolting, and Disease resistance, good commodity, suitable for cultivation in summer and autumn, the late-maturity of high quality and efficient varieties. Seeds before sowing with cold water soak 8 to 12 hours until the seeds of water absorption of 70% to 80%, re-wet gauze wrap, placed in a refrigerator or freezer