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大棚早春拍薹仅能迫使芹菜提前收获,造成大棚芹菜与露地早春芹菜市场供应出现空缺,而且还降低了品质和效益。如果用100ppm的邻氯苯氧丙酸在芹菜植株花芽分化以前(当芹菜株达4叶期以上且在10°以下约经15天的条件下即开始花芽分化)喷洒植株1—2次,
Green shoot bolls early in spring can only force celery harvest in advance, resulting in greenhouse celery and open field Celery supply market in early spring vacancies, but also reduce the quality and effectiveness. If plants are sprayed 1-2 times with 100 ppm of o-chlorophenoxypropionic acid before flower bud differentiation of the celery plants (when the celery plants start to flower more than 4-leaf stage and begin to flower buds under about 10 ° for about 15 days)