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大葱是以变态的营养器官为产品的2年生作物。在其行营养生长的第一年,形成肥大的产品部分——大葱。如果当年不收获上市,第二年便抽台开花并结籽。但是,有时大葱在形成产品器官之前便提前抽台开花,这种现象称“早期抽台”。一旦出现早期抽台,会严重影响大葱的产量和品质,应设法防止。除选择冬性较强的优良品种（如锦州错叶）外,还应采取如下栽培措施:
Onion is a 2-year-old crop that uses a vegetative organ as a metamorphosis. In the first year of their nutritional growth, the formation of hypertrophy product part - green onions. If the year does not harvest the market, the second year will be pumping flowering and seed. However, sometimes green onions are plowed before they form organs of their organs, a phenomenon known as “early pumping.” In case of early stage pumping, it will seriously affect the yield and quality of green onions and should be prevented. In addition to selecting the better winter varieties (such as the wrong leaf Jinzhou), it should also take the following cultivation measures: