芹菜先期抽薹,是指芹菜幼苗在长出2～3片真叶后,在一定阶段的低温影响下,形成花芽,并在高温、长日照下,抽出花薹。先期抽薹,会影响芹菜叶柄生长,使叶柄产量下降,纤维增多,降低食用品质,影响经济效益。 一、芹莱先期抽薹的原因 芹菜先期抽薹现象,普遍发生在越冬春芹菜及春芹菜上。先期抽薹必须以花芽分化为前提,在下列3个条件下,芹菜易发生花芽分化:一是幼苗要有一定大小(一般2～3片真叶)。二是低温(10℃以下)。三是低温持续一定时间(10天左右)。春 Celery bolting, refers to the celery seedlings in the growth of 2 to 3 true leaves, under the influence of a certain stage of low temperature, the formation of flower buds, and under high temperature, long sunshine, flower buds. Early bolting will affect the growth of celery petiole, petiole yield decline, increased fiber, reduce food quality, affecting economic benefits. First, celery pre-bolting reason Celery pre-bolting phenomenon, the prevalence of overwintering spring celery and spring celery. Pre-bolting must be based on the premise of flower bud differentiation, under the following three conditions, celery susceptible to flower bud differentiation: First, seedlings have a certain size (usually 2 to 3 true leaves). Second, low temperature (below 10 ℃). Third, the low temperature lasts for a certain period of time (about 10 days). spring