Harvest timely. The ripe fruit of Li Guo is the gradual decline of green color, showing the inherent color of the variety (most of the varieties of Li Guo have fruit powder on the surface, and the meat is slightly softer). In the red variety, the fruit coloring area is nearly half of the whole fruit, which is the hard mature period, 90% is the semi-soft mature period, and the yellow variety is the hard mature period when the pericarp is green to greenish, and the yellowish green is the peel. Semi-soft ripening period. Li Guo harvest must be timely, usually in the early stage of maturity, picking and harvesting is too early, the flavor is not good, too mature, the fruit has become soft and intolerant of storage. Under normal circumstances, generally fresh food varieties are harvested near the full ripening period; the processed fruits are harvested during the hard ripening period; brittle lilies are harvested during the hard ripening period; and water plums are picked 3-4 days before ripening. Harvesting method. The fruit is pre-cooled to 4-5°C before being sold or stored. In order to prevent mechanical damage, the packaging containers should not be too large, 6-10 kilograms per carton, before the package Li Guo should be precooled as soon as possible, pre-cooling method to use 0.5-1 °C cold water cooling effect is better. storage. 1, cold storage. The storage temperature is 0-1°C and the temperature is about 90%. Plum storage at -1°C for 45-60 days will cause browning caused by low temperatures. Care should be taken to avoid this temperature. Before the plums were put into the warehouse, formaldehyde or sec-butylamine fumigant was used for fumigation to disinfect. 2. The plastic bags are stored at low temperature and controlled atmosphere. A 0.025 mm thick polyethylene film was used for fruit packing. 5 kg per bag, fasten bag after installation and store at 0-1°C. It can be stored for 10 weeks under oxygen concentration of 1%-3% and carbon dioxide concentration of 5%.