Reasons and prevention of hollow cracking of the celery stem
Disposable Electric Hook,Electric Hook,Disposable Electrocoagulation Instruments,Instruments Electric Hook ZHEJIANG SHENDASIAO MEDICAL INSTRUMENT CO.,LTD. , https://www.sdsmedtools.com
During the growth of celery, especially in the middle and late stages, white spots, hollows, or horizontal and vertical cracking of the petioles often appear on the petiole cross-section. The causes and solutions are now described as follows: The lack of boron in soil is the main cause of cracking of petiole. Solution: Use 0.5 to 1 kg of borax per 667m2 as base fertilizer. Once a slight cracking handle is found, use 0.2% to 0.5% borax aqueous solution for foliar spray, or 0.25% borax aqueous solution to root. Improper sowing time or less nitrogen fertilizer exposed to the autumn sowing late planting, coupled with lack of nitrogen fertilizer, plant growth is poor, harvesting season plants can not reach the harvest standard, and in the case of delayed harvest, vulnerable to low temperature, cold wave Infestation, petiole softening, intensifying the hollow phenomenon. Therefore, localities should determine suitable sowing dates based on local climatic conditions and cultivation facilities, and strengthen fertilizer and water management before and during growth to provide sufficient nitrogen fertilizer. The cold celery plant was not tolerant to cold, and when the temperature was below 0°C or below 0°C, it was prone to freezing. When the plants are severely chilled, the structure of the petiole is destroyed. After the temperature rises, the tissue cannot be recovered and the cell gap increases, resulting in hollow. Therefore, in the cultivation process to prevent freezing, insulation measures should be used to avoid open winter. Variety of degraded celery and common celery are prone to natural hybridization. Therefore, celery must be strictly isolated from other celery varieties when seedlings are preserved. At the same time, in the process of seed production, some hollow plants should be prevented from being used for seeding to avoid increasing the proportion of hollow plants. .