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生菜,即叶用莴苣,原先主要在春秋两季栽培。近年来,随着设施园艺的发展,栽培季节拉宽,基本上成为周年均衡供应的蔬菜品种。无论是结球生菜、半结球生菜,还是散形生菜,均可推开播种,多作栽培。 一、多作栽培 第一作:冬季温室生产。选早生抗寒散叶生菜品种,如绿皱叶生菜(即绿波生菜)和引进的美国大速生菜及当地生菜等。11月下旬至12月上旬播种育苗,
Lettuce, leaf lettuce, originally mainly cultivated in spring and autumn. In recent years, with the development of facilities and gardening, cultivation season widened, basically become the annual balanced supply of vegetables varieties. Whether it is the ball romaine lettuce, hemisected lettuce, or loose-shaped lettuce, can push open seeding, and more for cultivation. First, more for the first crop cultivation: winter greenhouse production. Early selection of cold-resistant loose leaf lettuce varieties, such as green leafy lettuce (green wave lettuce) and the introduction of the United States and the rapid lettuce and local lettuce. Seedlings are planted in late November to early December,