1. Harvesting and post-harvest treatment The cauliflower used for storage should be harvested before the flower branches in the bulb are loose, and the late-maturing varieties with light white color, compact tissue and moderate size have the best storage resistance. The harvesting time should be chosen in the morning when the weather is clear and the soil is dry. Usually leave 2 at harvest? Three rounds of outer leaves protect the inner flower ball. Broccoli black spot is the main disease in storage, which first discolors the flower buds and then turns brown. In order to control the disease, you can use 2? Use chlorpheniramine 1250 for 7 days? Spraying flowers with 2000-fold solution or treating with 100 mg/kg calcium hypochlorite before storage is beneficial to reduce mold during storage. (4) phenomenon occurs.
Second, when packing cauliflower, put the stem down in the basket, and the top product is lower than the edge of the basket. It is forbidden to use bamboo baskets or wicker baskets for shipment. Conditional can be directly packed into polystyrene foam box, immediately after packaging and warehousing. Extend the shelf life, 0.0 15? Packaging with 0.030 mm thick polyethylene film and punching two small holes in the bag when necessary can play a good role in spontaneous modified atmosphere. It's best to store it in sealed polyethylene bags.
Three, storage, transportation and storage temperature requirements of 0? 1, humidity 90%? 95%, so it's best to store it in a mechanical refrigerator. It is required to transport by refrigerated truck, and the temperature should not be higher than 4.5, otherwise the buds will turn yellow quickly. If there is no refrigerated storage and transportation, ice cubes can be added to the packing box in time to cool down after harvesting, and the amount of ice added accounts for 1/3 of the total volume of the box. 2/5, and shipped to the destination as soon as possible.
Cauliflower can generally be preserved for about 4 months by the following methods, and the decay rate is less than 15%. 1. False seed and false storage: choose late-maturing varieties when planting. Before winter, use sheds, water storage ditches, sun beds, etc. to put immature flower heads into the heels, press them with leaves, properly cover them against the cold, keep the air fresh in time, and properly water them. It's best to let cauliflower get a little light. According to experiments, by the Spring Festival, the diameter of the egg-sized flower ball can be increased to 7- 10 cm.
2. Storage in the cellar: bind the mature flower balls with 2-3 leaves, leaving 3-4 cm at the root, put them in baskets or vegetable racks, and store them together in the cellar, keep a certain temperature and humidity, check them regularly, and take out cauliflower with open or discolored buds in time. 3. Modified atmosphere storage: spray 3000 10-6 carbendazim or thiophanate-methyl on the stored cauliflower, dry it slightly, put it in a cold storage, seal it with a film, and control the oxygen concentration at 2%-4% and the carbon dioxide content at 6%-8%. Potassium permanganate is put in the film, which has good green keeping effect and the flower ball is white. When the film is closed for storage, the condensed water must be prevented from falling on the flower ball to reduce the mildew of the flower ball.
4. Plastic wrap storage: spray the flower ball with ba40 10-6-6, dry the water, then pack the flower ball with a polyethylene film bag with a thickness of 0.003 cm, and store it in an environment with a temperature of 1 to 0.5 degrees Celsius and a relative humidity of 85%-95%. The commodity rate can reach 85%.