Storage speed: timely storage after harvest is an extremely important link in the process of storage and preservation. It is required that the ground storage time after harvesting should not exceed 24 hours, especially not exposed to the sun. Generally, the warehousing time is 5 days, 2-3 days is the best, and the longest time cannot exceed 10 days. The storage time is too long, the temperature difference of pears stored continuously is large, and the cooling process is difficult to control.

Quality of stored pears: The quality of pears is an important condition. Choose good fruits and remove damaged fruits such as diseased fruits, insect fruits and damaged fruits. Sick fruit refers to pear fruit infected by ring rot, scab and other bacteria; Insect fruit refers to pear fruit that is harmful to Tenebrio molitor, fruit eater and ladybug. The damaged fruit refers to the pear whose fruit surface and stalk are damaged during harvesting. In the process of slow cooling, damaged fruits are easy to rot and deteriorate, and lose their edible value.

Cool slowly. This is the key to ensure quality. The cooling speed is too slow, the fruit color is old and yellow, and the cooling speed is too fast, and the field temperature is not easy to be distributed, which is easy to form black heart disease. The total cooling days are controlled in 35 -45 days, and the cooling process of different pears is different. During the cooling period, the temperature fluctuates from 65438 0℃ to-65438 0℃, which is too large and prone to skin crossing. Finally, the temperature fluctuates between 0.5℃ and -0.5℃.

Ventilation: The carbon dioxide content of the gas in the warehouse shall not exceed 65438 0%, and the smaller the acetaldehyde concentration, the better. Ventilation should be carried out in a low temperature and relatively clean environment. Pear stacks should be piled into ventilation stacks, and there should be a certain distance between stacks and between stacks and walls to ensure thorough ventilation so as to avoid economic losses.

Humidification treatment: the relative humidity of the storage room is 90-95%. If not, you can spray water on the ground manually, and the amount of water should be controlled at the level of no water on the ground.

Sampling inspection of commodities: sampling inspection 1 time every half month after the warehouse is closed, and sampling inspection 1 time every month after 65438+February. By sampling, we can know the changes of temperature and humidity in the warehouse, so as to ensure the quality of fruit more effectively. receive