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结球莴苣是一年生蔬菜,食用部分为球叶,其内含有醣、甘露醇、蛋白质、莴苣素和各种矿物盐。莴苣素有一定的医疗效果。我所于1990年引进试种成功。1990～1992年进行了栽培试验,亩产可达2500公斤;抗逆性强,春季栽培不易抽薹,6月中下旬采收,为我市春夏之交的蔬菜淡季增添了新的花色品种。现将1990～1992年栽培技术试验总结如下:
Ball lettuce is an annual vegetable, edible part of the cotyledons, which contains sugar, mannitol, protein, lettuce and a variety of mineral salts. Lettuce has a certain medical effect. I was introduced in 1990, the successful trial. Cultivation experiments were carried out from 1990 to 1992, with a yield of 2500 kg per mu; strong resistance, easy to bolting in spring and harvesting in late June, adding new flower color varieties to the vegetable off-season at the turn of spring and summer of our city. Now 1990 ~ 1992 cultivation techniques are summarized as follows: