Cucumber, whose real name is cucumber, is green and tender, so Guangzhou likes to call it cucumber. Only the old melons that have been planted show the true colors of cucumbers. Fresh and tender cucumbers have vigorous life activities and fast nutrient consumption; Thin skin, poor water retention capacity, easy to lose water; There are tumor thorns on the surface of melon skin, which are easy to be infected with germs because of bumping. During storage, the chlorophyll of cucumber gradually decomposes, and the epidermis of cucumber turns from green to yellow. During the storage period, because the seeds can continue to develop and mature, the melon body is deformed, and the phenomenon of "big belly" or "big head" appears. Moreover, the crispy melon meat at one end of the melon handle softened into chaff, which lost its edible value. The above situation is the outstanding problem of cucumber preservation. In addition, cucumber is afraid of cold, and will suffer from cold damage below 10℃. Therefore, cucumber is a kind of melon and vegetable that is not easy to store. Even at low temperature, it can only be kept fresh for ten days at most.

According to practical experience, the number of thorns in cucumber is closely related to preservation, and less thorns is more beneficial to storage and preservation than more thorns. Cucumbers planted in the south have more tumors and fewer thorns, while those planted in the north are mostly "prickly melons" with more tumors and thorns. Scissors are required when collecting, and care should be taken not to hurt the tumor.

Cucumber is cold-resistant and easy to lose water. The storage and transportation temperature should not be lower than 10℃, but it is easy to age when it is higher than 15℃. In order to prevent water loss, the humidity of the environment should be above 95%. High temperature and high humidity are easy to get sick, so disinfection and anti-corrosion measures must keep up. Solving this contradiction is also the key to cucumber preservation. In addition, cucumber is also sensitive to ethylene, so it can't be stored and transported with melons, pears, tomatoes and other fruits and vegetables that easily release ethylene. It is best to put the ethylene absorbent in the package.

In view of the above situation, there are three forms of film packaging for fresh-keeping cucumbers: one is to stack baskets full of melons and cover them with 0.04-0.06 mm film curtains; The second is to put a 0.03 mm through-bottom membrane tube in the basket, and the nozzle is folded; The third is to put1-2kg in a 0.03 mm film bag, fold it and store it in a basket. For the above three methods, before and after packaging, don't forget to use the bactericide Kemeiling containing 50% sec-butylamine, 0. 1 ml per kilogram of cucumber, fumigate for 24 hours before packaging, or pack it with cotton balls dipped in liquid medicine, and be careful not to touch the melon.