Watermelon is listed in large quantities after the wheat harvest, at this time the price is cheap, if the watermelon can be sold fresh to the off-season for sale, the price is higher. Here are the tips for storage and preservation of watermelons: The selection of varieties generally requires the use of thick and tough late-ripened watermelon varieties. It is better to harvest 7 to 8 ripe fruits in advance to prevent them from harvesting. Choose sunny morning harvest. Each watermelon has 10 to 15 cm long branches. The ends of the branches are covered with grass ash or slaked lime to eliminate germs and prevent infection. During picking and transport, it prevents bumps, vibrations and squeezing to prevent decay and internal injuries. After the pharmacy is sterilized and picked up, after the dew is dried, the watermelon is soaked in 15% saline for 3 minutes. After slightly drying, the surface of the watermelon is rubbed with 0.5%-1% potassium sorbate and sealed in polyethylene plastic. Bags. The cellar is cleaned before entering the cellar and stored in the cellar. Each cubic metre is fumigated with 10 grams of sulphur or sprayed with a 150-fold formalin solution and sealed for two days. After ventilation, the watermelon can be entered into the pit. Ventilation inspection cellar should have "vital eyes" and skylights, pay attention to ventilation and heat dissipation period. The cellar temperature is controlled at 5-15 degrees Celsius, and the relative humidity is maintained at 60%-80%. Check every 10 days and pick out watermelons that should not be stored.
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