以红皮洋葱为试材 ,对呼和浩特地区春季播种育苗、初夏定植、秋季收获栽培方式下 ,洋葱营养生长期的生育规律进行了初步研究 ,结果表明 :幼苗期为 70 d～ 72 d,叶片生长期为 3 0 d～ 40 d,鳞茎胀大期为 3 0 d～ 3 5 d,全营养生长期为 14 7d～ 15 0 d。同时 ,对根系、叶片及鳞茎的生育规律作了初步研究探讨 ,为制订栽培技术措施提供了依据 With red onion as test material, the law of growth and development of onions in vegetative growth stage was studied in spring planting seeding, early summer planting and harvesting in autumn in Hohhot. The results showed that the growth of onion was 70 d ~ 72 d, the growth of leaves The period of 30 days to 40 days, bulging stage was 30 days to 35 days, and the full vegetative stage was 14 7 days to 150 days. At the same time, preliminary study on the fertility rule of roots, leaves and bulbs provided the basis for formulating cultivation techniques and measures