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生产上油菜常有年前抽苔开花现象。在正常情况下,油菜一般在12月开始花芽分化。到春季,花芽长大冲开心叶表露出来,是为现蕾。在现蕾的同时,油菜茎基开始延伸上长叫抽苔。如果现蕾抽苔发生在年前,或在春后正常抽苔开花时期以前,都叫提早抽苔开花。油菜提早在年前抽苔开花,往往遭受冻害,造成减产,因此,必须采取措施预防和补救。
The production of rape often years ago, bolting flowering phenomenon. Under normal conditions, rape usually begins flower bud differentiation in December. To the spring, flower buds grow up happy heart revealed, is for the budding. In the budding at the same time, the rape stems began to extend on the long called bolting. If the budding bolting occurred years ago, or in the spring after the normal period of bolting flowering, are called early bolting flowering. Rape early in the years ago bolting flowering, often suffer frost damage, resulting in reduced production, therefore, measures must be taken to prevent and remedy.