Celery topdressing has tricks
Appropriate application of nitrogen fertilizer celery requires a large amount of nitrogen fertilizer throughout the growth period. Topdressing should be based on ammonium bicarbonate, so that it can be applied in small amounts for several times, generally requiring 2 to 3 times of topdressing. However, it should be noted that celery should not be applied with urea. Because celery is applied with urea, the growth is slowed down, the cellulose is increased, the plants are easy to age, the quality is lowered, and the bitterness is consumed when eating. Therefore, celery should not be applied during the whole growth period. Urea.
After chasing organic fertilizer, the organic fertilizer that has been tanning and fully decomposed can improve the quality of celery. Note that no decomposed organic fertilizer can not be applied as a top dressing, so as not to cause burning roots. After the application of organic fertilizer, the stems of the plants are soft and strong, the fibers are reduced, and the quality and yield are greatly improved.
Supplementation of micro-fertilizer calcium deficiency can cause celery to "burn heart", and boron deficiency can cause physiological diseases such as celery hollow and petiole cracking. Foliar application of 0.5% calcium chloride or calcium nitrate solution can prevent celery from "burning heart"; to prevent celery hollow and petiole cracking, 0.5-0.75 kg of borax per acre, or 0.3% to 0.5% borax Solution foliar application.
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