Different varieties of broccoli have different storage-resistant abilities. Only by selecting the storage-resistant species, can they achieve storage and preservation and obtain considerable economic benefits. At present, the varieties that are resistant to storage are mainly medium-late-maturing varieties. Early-maturing varieties should not be stored. According to the length of the growing period of the variety and the local suitable storage period, the sowing period should be generally sown and planted later than the fresh broccoli, so that the harvesting period catches up before the freezing and the harvesting is premature. The temperature is high and it is not easy to store; it is prone to freezing damage. ,Low Yield. In terms of cultivation and management, do not irrigate water, use furrow irrigation methods, and use less or no watering for 7-10 days before harvesting. During the middle and late stages of flowering, the outer leaves cover the flower ball to protect the flower ball from the day. Sun and frost damage. On the basis of nitrogen fertilizer application, increase phosphorus and potassium fertilizers. The suitable curd standard for storage of broccoli is: a flower ball with a diameter of about 15 cm and a weight of 0.5 to 0.8 kg. The flower ball is compact, white, no pest, no virus, no damage, no pollution. When harvesting, if you intend to carry out short-term storage for about 2 months, you can leave 4-6 leaflets to protect the curd, which also helps preserve vitamin C. If the storage period exceeds 2 months, you should store the preserved flower bulbs. Because the leaves are perishable at the end of storage, the curd has a mildewy taste, which affects the flavor of the curd, thus losing its food value. When harvesting, the flower bulbs should be avoided because the damaged bulbs turn yellow and dark during storage, causing brown spots and rot. The suitable storage temperature of broccoli is 0 to 1°C. When the temperature is too high, especially when the temperature is higher than 10°C, it will easily lead to discoloration, convulsions, dehydration, shrinkage, and decay of the flower bulbs, which will result in loss of storage value. If the temperature is lower than 0°C, freezing damage is likely to occur. The flower bulb appeared partially transparent, and brown spots appeared after returning to temperature, which affected the flavor and storage of the flower bulb. Suitable broccoli storage relative humidity of 90% to 95%, the humidity is too low, the flower ball is easy to dehydration, shrinking and weakening, flowering branches loose, loss of commercial value and food value.
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