Key technologies before and after Apple storage
The main reasons why apples cannot be sold for a bumper harvest are the relative surplus of the apple industry, the difference between market demand and production, the downturn in the world market, and the concentrated listing of late-ripening apple varieties. Proper storage is conducive to adjusting the supply and demand of the fruit market!
How to store and store should first be picked in a timely manner, and the picking time should be prolonged appropriately. Wear gloves when picking, and use a flannel substrate for carrying baskets, and handle gently. Secondly, it is necessary to cool the fruit before storage, so that the fruit can fully adapt to storage.
Before entering the warehouse, it is necessary to fumigate the warehouse, clean up the residue in the air conditioning warehouse, and do a good job of sterilization. Such as sulfur, formaldehyde, bleaching powder, ozone, etc. The sulfur + sawdust combustion method is commonly used, and the dosage is 3-58/m3 of the storage volume. After burning, the open flame is extinguished to generate smoke. The sterilization effect is good, but it has a certain corrosion effect on the metal in the storage. Jiaxing (i.e. medical lyso water) has broad-spectrum sterilization and high efficiency, but it is inconvenient to use, improperly used, and harmful to the human body. The Product Preservation Engineering Technology Research Center has developed a new type of professional disinfectant smoke agent for warehouses. The application method is: after the warehouse is cleaned, the disinfectant (including combustion-supporting materials) can be burned to smoke. The dosage is 3-5 Seal the warehouse for more than 4 hours after ignition. But before entering the warehouse, the warehouse door must be opened for ventilation before entering the warehouse. The sanitary condition of the warehouse and the need for disinfection are all determined by the sanitation and veterinary personnel. In order to carry out poisoning work, the cold storage factory director or cold storage design engineer should deploy a special work team and provide tools, work clothes, glasses, gauze bandages, masks or gas masks.
Appropriate gas composition for air conditioning storage technology: oxygen 2%-4%, carbon dioxide 3%-5%, and the rest are nitrogen and trace inert gases.
Packaging: Small packaging can choose polyethylene or non-toxic polyvinyl chloride film with a thickness of 0.06-0.08 mm, and cover the outside or inside of the fruit basket (box). After the fruit is loaded, tighten or seal it. The plastic film tent is made of polyvinyl chloride film with a thickness of 0.1-0.25 mm.
After the apples are in the account, the air is first drawn so that the four walls of the account are tightly attached to the fruit basket, and then nitrogen is filled to restore the account.
Post-hidden management: The concentration of oxygen and carbon dioxide in the tent should be measured frequently. The carbon dioxide is too high, so try to eliminate it. The silicon window air-conditioning tent (bag) stores 1 ton of apples. Under the condition of 5-10℃, the oxygen is kept at 2%-4% and the carbon dioxide is 3%-5%. The area of ​​the silicon window should be 0.3-0.6 square meters.
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