High-temperature heat damage is a major disaster in summer vegetable production. The main measures for preventing heat damage at high temperature are as follows:
1. Strengthen pre-management, rational application of phosphorus, potassium, calcium fertilizer, promote the vigorous growth of branches and leaves to reduce the risk of fruit burning.
2, timely sprinkler irrigation or deep well water, watering time should be selected in the morning or evening to avoid watering at high temperatures in the afternoon, while paying attention to pouring, drenching, cooling through evaporation cooling.
3, reasonable plant adjustments. Pay attention to shade when tomato pruning, leave 2~3 leaves above the ear to prevent the fruit from being exposed to direct sunlight; melons, watermelons, pumpkins and other large melons can use grass or other covering materials to put melon or melons. To avoid burns.
4, spray 0.1% zinc sulfate, borax, etc. at high temperature to prevent sunburn, cracking and other heat damage.
5, the use of ground cover wheat stubble, straw or intercropping with high-stalk crops for shade, can play a defensive heat damage.
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