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Prevention of pepper powdery mildew
1. Control measures 1 Improve ventilation conditions in the field. We must diligently chop field weeds to prevent grass shortages. When the plants grow too dense, some of the shoots may be cut off from the "four-mother" to improve the ventilation conditions in the field. 2 timely watering. If the weather is dry, timely water should be poured in the morning and evening in a balanced manner; in order to prevent the occurrence of high humidity and dry conditions in the field, water should not be poured. 3 timely fertilizer. After entering the result period, each layer of fruit can be topped with 20-25 kg of ammonium sulfate or 15-20 kg of ammonium nitrate per acre, which can increase the disease resistance of plants. 4 Spray early. In the initial onset (small yellow spots on the leaf surface), it is necessary to spray as early as possible, 27% high-fat film emulsion 80-100 times, or 2% Wuyimycin water 200 times, or 2% agricultural anti-120 water Agent 200 times, or 50% sulfur suspension 300 times, or 20% triadimefon EC 1500-2000 times, or 12.5% ​​diniconazole wettable powder 2500-3000 times, or 25% demulsifier 3000 times the liquid, spray once every 7-10 days, even spray 2-3 times, pay attention to the back of the leaf spray. 5 Clean up the sick body. After the pepper is pulled, it is necessary to fully clean up the field sickness (including the landing blades), transport it to the field and burn it, and plunge the floor. 2. Precautions 1 It is not easy to control the disease epidemic if you want to wait until the leaves fall off and then spray. 2 Pay attention to the safety interval of pesticides used.
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