洋葱为百合科葱属2年生草本植物,别名洋蒜、圆葱。约在20世纪初传入中国,现各地均有栽培。因洋葱只能用种子繁殖,故获得高质量的种子便成为进行高产栽培的先决条件。洋葱种子的活力因品种不同会有所差异,但均具有种子的典型特性。收集种子的方法是将洋葱头先存放4个月,再栽入土 Onion is a liliaceae biennial 2-year-old herb, alias Yang garlic, onion. About the beginning of the 20th century into China, are now cultivated everywhere. Since onions can only be used for seed multiplication, obtaining high quality seeds is a prerequisite for high-yielding cultivation. Onion seed vitality varies by species, but all have the typical characteristics of seeds. The method of collecting seeds is to store the onion first for 4 months before planting it in the soil