Do not use urea in greenhouse celery cultivation. Avoid using urea when planting celery in greenhouse. Because celery grows slowly after urea application, cellulose increases, plants are aging, quality is reduced, and bitterness is consumed. So how to supplement the nitrogen fertilizer needed in the cultivation process of celery in the greenhouse? Zhengdao Fertilizer Network Xiaobian said that you can choose ammonium bicarbonate, fertilization should pay attention to a small number of times, generally need to topdress 2-3 times.
In addition, greenhouse cultivation of celery can be applied to the amount of organic fertilizer, farm organic fertilizer or commercial organic fertilizer, and the application of organic fertilizer can improve the quality of celery. The celery plants are tender and strong, the fiber is reduced, and the quality and yield are greatly improved. However, the farmer's organic fertilizer that is not decomposed can not be applied as a top dressing, so as not to cause burning roots.
In the growth process of celery in greenhouse, many diseases are prone to occur, and it is beneficial to supplement the trace element fertilizer in moderation. It can prevent physiological diseases of celery. For example, common calcium deficiency caused by celery leads to heartburn. Boron deficiency can cause celery hollow and petiole cracking and other physiological diseases can be effectively prevented by fertilization. In order to prevent celery hollow and petiole cracking, it can be applied per acre. Borax 0.5-0.75 kg, or foliar spray with 0.3%-0.5% borax solution.
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