Grape heat damage often occurs when the weather suddenly becomes hot and the light is strong and direct. Blades and branches close to the ground, frame materials are more susceptible to damage from local high temperature radiation. In recent years, due to the continuous drought and less rain, grape heat damage has occurred more seriously. The following measures can prevent grape heat damage: 1. Scientific summer shearing and pruning. When summer shearing, the scientific leaf area index should be used to keep the number of functional leaves, which can alleviate the heat damage caused by high temperature. 2. Water and fertilizer management. Appropriate application of organic fertilizer to improve soil water content. Irrigation in the hot season to ensure a constant supply of soil moisture. 3. Protective measures. In the high temperature season, combined with other disease prevention and control, spraying 0.05% copper sulfate solution can enhance the heat resistance of the grape; in areas with severe heat damage, if necessary, spray 27% non-toxic high-fat film emulsion 80-100 times liquid, Effectively protects ears from heat damage. More pesticide knowledge , please pay attention to China Pesticide Network
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