1, rational use of nitrogen fertilizer In the whole growth period, celery needs a large amount of nitrogen fertilizer, and the top dressing is mainly ammonium BICARBONATE, so it can be done in small amounts several times. However, it should be noted that celery should not be topdressed with Urea, otherwise it will lead to slower growth, more fiber, plants tend to age, reduce the quality, with a bitter taste when consumed. 2, topdressing organic fertilizer After top-dressing, full maturity organic fertilizer can improve the quality of celery. Note: No compost organic fertilizer can be applied as top dressing. So as not to cause burning root rot. After applying the organic fertilizer, the stems of the plants were tender and thick, the fiber was reduced, and the quality and yield were greatly improved. 3, use of ecological fertilizer The timely use of vegetables, strong stems, stem thick stems, leaves hypertrophy, fresh leaves, plants lush, strong natural taste. At the same time, it can increase the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poisons. Manganese Acetate,Manganese Acetate Tetrahydrate,Manganese Diacetate,Manganese Ethanoate Wuxi Yangshan Biochemical Co.,Ltd. , https://www.yangshanchem.com