The principle of 'every flower in a crop depends entirely on fertilizer' corresponds to the timely and sufficient supply of fertilizers for high yield of celery. To fully utilize the characteristics of its own variety and possess its unique crispy and sweet taste, it is necessary to achieve a scientific and reasonable fertilization structure.
1. The effect of different fertilizers on the growth of celery; Celery, as a leafy vegetable, mainly feeds on the stem, while nitrogen fertilizer can fully develop the plant's stem and leaves, making the leaves shiny and thick, and the stem thick and tender.
If nitrogen fertilizer is insufficient, celery stems are prone to hollowing, yellowing of plant stems and leaves, and sluggish growth, seriously affecting the quality and sales of celery. Adequate potassium fertilizer can make the leaves stretch and thicken, allowing them to fully engage in photosynthesis.
Provide more nutrients for the loose stems, facilitate the expansion and development of stems and leaves, and enhance the glossiness of celery plants; Phosphate fertilizer can promote the elongation of stems and leaves, increasing the height of plants. Therefore, various fertilizers should be used according to different growth periods to ensure healthy growth of plants.
2. The common urea is not suitable for growing celery, as excessive use of urea can slow down the growth rate of celery and delay its market launch. In terms of internal quality, it can reduce the crisp, tender, and sweet taste of celery, while the degree of fibrosis in the petioles will be significantly enhanced and the taste will become bitter.
3. Boron deficiency in celery is also common, manifested as hollow petioles, cracking, browning, and other symptoms. The prevention and control methods are generally to apply sufficient organic fertilizer or add borax to the base fertilizer. When symptoms appear during the growth process, spraying boron containing leaf fertilizer can reduce the adverse effects caused by boron deficiency.
