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春甘蓝在低积温的条件下会先期抽苔。春甘蓝冬性弱的品种,易感受低温而过早通过春化,产生“先期抽苔”现象;冬性强的品种,则相对不易“先期抽苔”。如果春甘蓝在秧苗期受低积温影响已通过春化之后,随之天气变暖,积温增加,会促使生殖生长,抽苔速度加快。
Spring cabbage in the low-temperature conditions will be the first bolting. Spring cabbage winter weak varieties, susceptible to low temperatures and premature vernalization, resulting in “pre-bolting” phenomenon; winter strong varieties, it is relatively easy “early bolting.” If the spring cabbage in the seedling stage by the impact of low temperature has been through the vernalization, followed by the warming of the weather, increased temperature, will promote reproductive growth, bolting speed.