Pear, snow pear, long pear, etc. are extremely sensitive to carbon dioxide and hypoxia and are not suitable for controlled atmosphere storage. The following mainly introduces different preservation measures for pears and other fruits. 1. The pear's dry consumption (water loss) and the temperature of the warehouse pear fruits have more moisture, and the water loss during storage is serious. Therefore, no matter what storage location is used, attention should be paid to increasing the humidity. Water can be sprayed on the ground or sprayed in the warehouse at any time. 2. Accumulation of carbon dioxide and ventilation of pears, snow pears, long pears, etc., when the library's carbon dioxide is higher than 2%, it will cause fruit and flesh browning. Therefore, strengthening the warehouse ventilation, reducing carbon dioxide accumulation, and reducing the accumulation of harmful gases such as ethylene, is the key to the storage of pear fruit technology. Therefore, in the early and late storage period, ventilation should be performed every day for 1 to 2 hours, and every 2 to 3 days in the middle period for a time of 1 to 2 hours. Dry lime can also be put into a bag with better air permeability and placed directly into the reservoir. The amount of lime is 0.55% to 1% of the fruit weight, or it can be placed under a fan or a cold air blower to circulate the gas through the reservoir. absorb carbon dioxide. This method can reduce the dry consumption caused by ventilation. 3. Pear is slowly cooled and storage pear is extremely sensitive to low temperature, and direct put into the zero degree Celsius library after harvest often causes a lot of black heart. The method of slow cooling should be adopted. After harvesting, it should be stored in the library of 10?12 degrees Celsius for 7?10 days. After that, it should be lowered by 1 degree Celsius every 3 days. The principle of slow early and late period should be mastered, and it should be reduced to zero degrees Celsius by 35~45 days. In addition, in order to reduce the occurrence of black heart disease, early harvest may be appropriate, harvested 5-8 days earlier than normal.
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