Apple trench storage, low cost, significant economic benefits, especially suitable for storage of late-maturing apple varieties. 1. Configuration dedicated temperature measuring instrument: Apple trench storage needs to configure a thermometer with 2 points with line telemetry function, thermometer installed in the room, two temperature sensors can be placed within 200 meters from the thermometer arbitrary placement . 2. To build a storage trench: Select a dry and open place and dig the trench along the east-west direction. The trench width is 1 to 1.5 meters. You can put 1 basket or box on both sides of the trench and leave the aisle in the middle. The ditch depth is 1 to 1.5 meters. It is advisable to put 2 to 3 layers of baskets or boxes in the ditch. The area with low temperature may be properly deepened, and vice versa. Ditch length is generally not more than 30 meters. Provide a suitable distance between the ditch and ditch to facilitate operation. When there is a lot of rain and snow, ditches drain water separately on both sides of the ditch. In case of loose soil, a single brick wall can be used to prevent collapse. The south side of the ditch is piled with earth or a wall to block direct sunlight. Ditch around the perimeter should be higher than the ground to prevent the inflow of rain and snow, the top of the trench with a good insulation performance thick straw curtain tightly to insulation, anti-rain and snow. 3. Storage operation: Store fruits in storage and cool them in a cool and dry place. Remove mechanical wounds, pests and diseases, and soak for 2 minutes or spray with antiseptic agent. Place two temperature sensors in the fruit pile and beside the trench, and observe the temperature in the heap and the trench at any time. The temperature in the heap will fall to the low-temperature nighttime fashion bag (preservation bag) next to the ditch, be loaded into a basket or boxed into a ditch, and cover the straw curtain. Operation time should be selected at night or early morning. After the apple enters the ditch, the temperature sensor in the fruit pile is moved into the ditch. When the temperature outside the ditch is lower than that in the ditch, the straw curtain is immediately uncovered, and the sinking cold air is used to lower the ditch temperature. When the temperature inside and outside the groove is equal, use a straw curtain to cover the groove. If properly handled, the carbon dioxide content of the fresh-keeping bag should be maintained at 4% to 9%. The management focus after entering the winter is insulation and antifreeze. Every 10 days or so, select a sunny day and open the straw curtain for 20 minutes. After winter, management focuses on insulation and cooling. Observe the temperature changes inside and outside the ditch at any time and meet the available low temperature outside the ditch. Pay attention to sudden changes in the weather to prevent sudden changes in the temperature of the frozen apple. Using the above method to store late-maturing apples, less investment and good results. After 5 months of storage, the original flavor can still be maintained, and the appearance is bright, without wrinkles, and the rotting rate is within 5%, and the average profit is about 0.6 yuan per kilogram.
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