Prevent celery heart rot in spring
Celery heart rot is a common physiological disease in celery production in spring. The tender tissue of celery grows black and dies. Subsequently, the celery root system and some stems and leaves also died one after another. The prevention and control methods are as follows: first, rational fertilization. Apply sufficient base fertilizer and increase phosphorus and potassium fertilizer and boron fertilizer to cultivate strong plants to improve disease resistance. Do not use too much nitrogen and potash fertilizer to avoid blocking boron absorption. Second, do not make the border surface too dry. Rational irrigation, not flooding. At low temperature, heat preservation and irrigation should be carried out properly. Third, timely removal of disabled bodies, reasonable close planting, increase ventilation and transmittance. Fourth, an appropriate amount of boron fertilizer should be applied. Fifth, chemical prevention and control. Diseased plants were immediately removed and controlled with chemicals to prevent spread.
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Water and Fertilizer Management of celery in greenhouse
First, when the buds top the soil at the seedling stage, gently water once, and the seedlings can come out in 1 or 2 days. Keep the soil moist in the future, based on the principle of frequent watering and less watering. When the seedling height is 10 cm, it can be fertilized with water for 1 and 2 times. Second, planting and squatting seedlings should be watered frequently and gently to keep the soil moist from planting to slow seedling.
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How to keep the seed of conventional celery
In recent years, some excellent conventional varieties of celery have been cultivated in many places, which also account for a large proportion in planting. In view of the fact that celery is a cross-pollinated crop, conventional improved varieties should especially do a good job in seed retention and degradation prevention, establish a good seed field or seed base, and select good seed plants. Strictly quarantined around the remaining fields at least 4.
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