1, pine needle preservation method: the collection of fresh pine needles without dew. Citrus first dries the moisture on the epidermis. Sort by size. Place the same-sized citrus gojis in the carton and wooden box with the tops facing up and place a layer of citrus on a layer of pine needles until the boxes are full. Sealed with pine needles above. After that, it will be emptied every other month. 2. Baking soda infusion: Keep the citrus in the baking soda for 1 minute, remove it and drain it, put it in a plastic belt and tie it tightly to make the orange juice more sweet and bright. Fresh fruit flavor can also be maintained after March. 3, cylinder preservation: the cylinder wash, dry with a cloth, move to the storage room for use. After the citrus fruit is picked, it is pre-stored for 2 to 3 days, and then the disease-free and fruit-free wounds are selected and discharged into the cylinder. There are pine needles that can be covered with pine needles. After the fruit is in the cylinder, it is not necessary to cap the first 10 days. If the temperature in the cylinder is stable, cover and move it to a cool place. 4. Cellar: The cellar has a long history. The cellar of sweet orange is a storage method commonly used in Hubei, Sichuan and other places. The cost is low, and cellaring is convenient. There are also many cellars in the north. Suitable farmhouses are scattered and stored one by one. The general humidity in the cellar is 95%-98%, and the temperature is 12C-18C. The cellar mouth is generally higher than the ground, preventing rain, and the old cellar should be trimmed before cellaring. Put clean topsoil. , After placing the fruit, but also with 40% of dimethoate 600 times cellar cellar. 5, hole hidden: the use of natural cave storage, should pay attention to the choice of anhydrous, cool, low temperature, high humidity cave. Caves should be disinfected before use. 6, farmhouse indoor storage: the use of earth houses, housing, bungalows, etc., select a cool, humid place, take a variety of sand, tank, heap, basket and other storage methods, at any time to grasp the storage conditions, can also be achieved Better results. Facilities storage preservation 1, ventilation storage preservation: also known as natural ventilation library. Can be stored in large quantities. 2, mechanical cold storage storage: In the warehouse with good thermal insulation, moisture resistance, the device cooling and blowing equipment to control, generally storage Wenzhou tangerine time up to 120 days (mid-November - early March), The total loss rate was 7.5% lower than room temperature storage. Cold storage should pay attention to: temperature, humidity, ventilation and three major factors.