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一、洋葱的性状洋葱.单子叶类的二年生草本植物,百合科,葱属.洋葱没有明显的主根和侧根,只有弦线状须根,分布在1尺内外的上层中。洋葱的叶是中空的管状叶,一般有8～10片。叶片制造的养分积蓄在叶鞘基部,形成肥厚的鳞片。鳞茎的大小,取决于叶子数量和叶子的发育程度。叶片的生长状况愈好,鳞片也就长得愈加肥厚。洋葱鳞茎通过阶段发育后,就能发生花苔。一个鳞茎少的有2～3个花苔,多的可达10个以上。花苔的顶端着生伞状花序,花小,白色,每一小花都具有雌雄蕊,异花授粉。开花后结的果实,叫做(?)果,具有三个心室,每室有两粒种子。种子黑色,与葱、韭菜的种子相似,寿命两年。
First, the onion onion onion monocotyledon perennial herbs, Liliaceae, Allium.The onion has no obvious main roots and lateral roots, only the string-shaped fibrous roots, distributed in 1 foot inside and outside the upper. Onion leaves are hollow tubular leaves, usually 8 to 10 pieces. Nutrients made from leaves accumulate in the base of leaf sheaths and form hypertrophy scales. The size of the bulb depends on the number of leaves and the degree of leaf development. The better the growth of the leaves, the more the scales grow thicker. Onion bulb through the stage of development, flowers can occur moss. A bulblet with 2 to 3 flowers moss, up to more than 10 or more. Flowers top of the moss with umbels, flowers small, white, each flower has a stamen, cross-pollination. Fruit after flowering, called (?) Fruit, with three ventricles, with two seeds per chamber. Seeds black, and onion, leek seeds similar to life expectancy two years.