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芹菜不宜施尿素芹菜整个生长期间需大量氮肥，但追施氮时不宜施尿素。因追施尿素，易使芹菜植株老化、纤维增多、生长缓慢，并带苦味，使品质降低。追施氮肥以碳酸氢铵和氨水为好，追施后可使植株柔嫩，纤维减少，气味减淡，品质得到提高。而且有助于防治地下害虫。［辛斐...
Celery should not be applied urea Celery need a lot of nitrogen throughout the growth period, but the topdressing nitrogen should not be applied urea. Due to the topdressing urea, celery plants easy to make aging, fiber increased, slow growth, and with bitter, so that lower quality. Topdressing nitrogen fertilizer to ammonium bicarbonate and ammonia as well, topdressing allows plants to tender, reduce fiber, odor, quality has been improved. But also help to control underground pests. [Xin Fei ...