Watermelon bagging cracking fruit
Causes of cracking 1. Usually the thin skin varieties and small varieties are prone to cracking. 2. In the early stage of fruit enlargement, it encountered low temperatures, and once it stopped growing, it quickly expanded and caused cracking. 3. From the late fruit enlargement period to the harvest period, the amount of watering is not appropriate, and the water absorption amount and evaporation amount are unbalanced and cause fruit cracking. 4. At a certain stage of fruit development, due to drought, the soil moisture is less, and the development of fruits is hindered. After a large number of irrigation, sudden increase of soil moisture causes fruit cracking. Preventive measures 1. Select the appropriate species. 2. The temperature at the early stage of fruit enlargement should be maintained at a temperature of at least 20°C and a suitable amount of water. 3. During the period of fruit enlargement, when it encounters high temperature and dry weather, the greenhouse film is removed, the top membrane is retained, and flood irrigation is prohibited. 4. Spray 1,000ml liquid from the new high-fat membrane of the bag-free type during the young fruit stage, fruit growing stage and fruit enlargement stage. After the spraying, the fruit quickly forms a layer of super-thin polymer soft film, which can replace the plastic film bagging and the new high-fat film. It can also prevent sunburn, heat and cold, moisturize and resist drought, inhibit the evaporation of high-temperature pesticides and prevent the hydrolysis of rain pesticides.
Hypodermic Injection: syringe needle and syringe are used to inject the liquid into the subcutaneous layer.
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