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1 分蘖与抽苔的关系大葱属低温长日照作物。春化过程是绿体春化 ,即植株在 3片叶以上 ,株高 1 0ｃｍ以上 ,径精超过 0 .4ｃｍ ,需60～ 70ｄ感受 7℃以下的低温 ,可完成春化过程。在长日照条件下 ,通过光周期 ,开始花芽分化 ,主茎生长受到抑制 ,失去顶端优势 ,茎盘形成新的生长
1 the relationship between tillering and bolting Welsh onion is a long-day low-temperature crops. The process of vernalization is the vernalization of the plantation, that is, the plant is above the three leaves with a plant height of more than 10cm and a diameter of more than 0.4cm. It takes 60 to 70 days to feel the temperature below 7 ° C to complete the vernalization process. Under long-day conditions, flower bud differentiation is initiated by the photoperiod, stem growth is inhibited, the top advantage is lost, and stem discs form new growth