The storage methods of horticultural products, according to their structural features and methods, mainly include the following types: Simple storage includes ditch storage, cellar storage, etc. The features of the horticultural products are simple in structure, less in construction materials required, and lower in cost. It can be stored according to local conditions by adjusting the storage temperature using natural temperature. Cave cave storage in China's Loess Plateau area, the use of cave dwelling storage of fruits and vegetables. It is a way to make full use of the characteristics of the terrain and dig holes in thick soil to build kiln for storage. Due to the poor thermal conductivity of the deep soil layer, the kiln temperature is less affected by changes in the outside temperature, the temperature is relatively stable, coupled with the natural ventilation cooling, there will be a more stable storage temperature. Tujia Cave is mainly composed of three parts: kiln door, kiln body and exhaust pipe. It usually uses night ventilation to reduce temperature, and ventilation during the day heats up. The temperature in the kiln cavity can be adjusted to the required storage temperature by controlling the area and time of ventilation. The relative humidity in the kiln is generally high and no adjustment is required. If the humidity is too low, the ground water spray is used to humidify the water. Cellar Storage China's Sichuan Province generally uses cellar to store large quantities of fruit. The cellar is built below the ground level and resembles a “triangular bottleâ€. After covering the cellar with slate, it has good sealing performance, low temperature inside the cellar, relatively high relative humidity, and the appearance of the stored horticultural products is fresh and full, with less rot. Ventilation storage is basically similar to cellar storage. It uses natural temperature to adjust the storage temperature in the warehouse, but its construction is one step higher than cellar storage. It has a permanent building, a warehouse with good thermal insulation, and an effective, complete and flexible ventilation system. The basic principle of ventilating storage is to use a temperature difference, through the ventilation equipment, the low temperature outside the library into the library, and then the library of hot gas, ethylene and other undesirable gases discharged through the exhaust equipment outside the library, so as to maintain a more appropriate storage of horticultural products surroundings. However, the ventilated storage still depends on the natural temperature to adjust the temperature inside the reservoir. Therefore, in areas and seasons where the air temperature is too high or too low, it is difficult to maintain the ideal temperature condition without additional auxiliary facilities, and the temperature is not easy to control. .
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