In winter greenhouses, celery often causes hollowing, which results in increased celery cellulose, poor quality, and reduced yield. The commercial quality of celery is reduced, which in turn affects the income of vegetable farmers. High temperature and drought, lack of fertilizers, pests and diseases, excessive burning of roots, lack of boron, cold celery, and late harvesting all contribute to hollow celery. For this reason, the following preventive measures can be taken in production:
Scientific watering In order to avoid the hollow phenomenon of celery, we must first do a good job of water management. In production, vegetable growers are often afraid of watering more often than they would cause soil temperature to fall, which will affect the normal growth of celery, resulting in insufficient celery growth. In fact, as long as the watering is appropriate, it will not affect the normal growth of celery. Watering once every 15 days, the amount of water should not be too large, you can pour water. Especially in the period of strong growth, we must ensure adequate water supply, and watering should be sufficient in about 15 days before harvest.
Temperature control Celery cold-tolerant vegetables, requires cold and humid environmental conditions, greenhouse cultivation celery, daytime temperature of 15 °C -23 °C is appropriate, the maximum does not exceed 25 °C, at night to maintain about 10 °C, in order to reduce respiratory consumption, to avoid Hollow, but not less than 5 °C, otherwise prone to frost damage and early convulsions. Usually create ventilation, in order to reduce air humidity, reduce disease, so that the petiole is full of hypertrophy.
Rational fertilization Based on the application of base fertilizer, the top-dressing fertilizer during the growth period is mainly available nitrogen fertilizer. With the addition of potassium fertilizer, the application amount is 20-25 kg each time and it is chased once every 15 days. The application of 0.3%-0.5% borax solution for foliar spray fertilizer has obvious effects on the prevention of the occurrence of the hollow disease.
Harvesting at a proper timing cannot be too late. If the harvest period is late, the petiole will age, the ability of the leaves to produce nutrients will decrease, the ability to absorb roots will be weakened, and nutrients will be insufficient. This will cause the parenchyma in the petiole to break and cause a hollow phenomenon.
Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues. Proteins perform a vast array of functions within living organisms, including DNA replication, catalyzing metabolic reactions, responding to stimuli, and transporting molecules from one location to another.
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