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大葱适应性很强,既抗寒又耐热,在我省从春至秋都可栽种,大、小植株均可露地越冬。大葱的生长周期较长,从营养生长转入生殖生长,要求幼苗具4片叶以上,并满足60～70天的低温(2～5℃)和长日照条件。所以,春播的葱苗当年不抽苔;“白露”以后播种的葱苗第二年栽培也不能抽苔。根据大葱的发育特点,可采取不同的栽培方法,实现周年供应。
Green onions adaptable, both cold and heat, in the province from spring to autumn can be planted, large, small plants can be exposed to wintering. The growth cycle of green onions is longer, from vegetative growth to reproductive growth, requiring seedlings with more than 4 leaves and to meet the 60 to 70 days of low temperature (2 ~ 5 ℃) and long sunshine conditions. Therefore, the spring onion seedlings do not planted moss; “white lotus” seedlings planted the second year of cultivation can not be bolting. According to the development characteristics of green onions, can adopt different cultivation methods to achieve the annual supply.