赤霉素在芹菜采收前2～3周,喷施浓度为20～50毫克/升的赤霉素溶液1～2次,每次每667m2喷药液40～50升。可增强抗寒力,叶色变淡,生长加快,茎叶肥大,使可食用部分的叶柄变长,纤维素减少,产量增加20%左右,提前收获。芹菜喷施赤霉素时浓度不能过高,以免使植株过于细长,喷施赤霉素后的1～2天内,要增施肥料,适时采收,防止植株老化。 Gibberellin 2 to 3 weeks before the harvest of celery, spraying a concentration of 20 to 50 mg / l of gibberellin solution 1 or 2 times, each spray liquid per 667m2 40 ~ 50 liters. Can enhance the cold resistance, leaf color fades, growth accelerated, stems and leaves hypertrophy, edible parts of the petiole longer, cellulose reduction, the output increased by about 20%, early harvest. Celery gibberellin concentration can not be too high, so as not to make the plant too slender, spray gibberellin within 1 to 2 days, to increase fertilizer, timely harvest, to prevent plant aging.