How should celery grown in a greenhouse be watered and fertilized?
How should celery grown in a greenhouse be watered and fertilized? Nitrogen deficiency in celery not only stunts plant growth and produces small leaves, but also makes the petioles prone to becoming hollow. Phosphorus deficiency in the early stage and potassium deficiency in the later stage have a relatively large impact on celery yield and quality. Celery is very sensitive to boron fertilizer, and boron deficiency causes stem splitting. Greenhouse celery should be...
How should celery grown in a greenhouse be watered and fertilized?
Nitrogen deficiency in celery not only stunts plant growth and produces small leaves, but also makes the petioles prone to becoming hollow. Phosphorus deficiency in the early stage and potassium deficiency in the later stage have a relatively large impact on celery yield and quality. Celery is very sensitive to boron fertilizer, and boron deficiency causes stem splitting. Greenhouse celery should be watered and fertilized scientifically to improve celery yield and quality.
During the seedling stage, water frequently in small amounts. When the celery sprouts break through the soil surface, water lightly once, and the seedlings can emerge completely in 1-2 days. After that, keep the soil moist and water frequently in small amounts. If the amount of water is too large, the seedlings are prone to leggy growth or rot. When the seedlings are nearly 10 cm tall, apply a topdressing 1-2 times along with watering.
After transplanting and seedling recovery, carry out soil compaction to control growth. From transplanting to seedling recovery, water frequently and lightly to keep the soil moist. After seedling recovery, the plants begin to grow, so the water amount should be controlled and intertillage should be carried out to encourage the roots to grow downward and accelerate heart leaf differentiation. If moisture is excessive, the outer leaves are prone to leggy growth, the heart does not develop well, and diseases are likely to occur.
Increase the amount of fertilizer during the vegetative growth period. After the soil compaction period ends, the plants begin to grow rapidly, so quick-acting nitrogen fertilizer should be applied immediately as a topdressing, and then potassium fertilizer should be applied in 1-2 split applications. Generally, water once every 3-4 days, and the irrigation amount can be smaller to avoid excessively low soil temperature, which is unfavorable for petiole thickening. About half a month before harvest, the whole plant can be sprayed with 30-50 mg/kg gibberellin 1-2 times.
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