Control technology:
1. Strengthen field management, timely irrigation, drainage, and tipping, improve the ventilation and light transmission conditions in the field, spray foliar fertilizer to protect the leaves, and increase the photosynthetic capacity of the leaves.
2, increase organic fertilizer, improve soil structure, improve soil permeability; rational follow-up organic fertilizer, combined with trace elements in supplement fertilizer, comprehensively increase tree vigor and tree resistance.
3, chemical control can choose to use 43% tebuconazole suspension 3000 times, 18.7% of azoxystrobin (Yangcai) suspoemulsion 1500 to 2000 times, 12.5% ​​epoxiconazole (Obo) suspension 3000 times and so on alternately , Interval 10 to 15 days, even spray 2 or 3 times.
Precautions:
1, in the high temperature, rainy, foggy days and dew dry conditions, to avoid the use of Bordeaux liquid, copper preparation fungicides, so as to avoid phytotoxicity.
2. During the high temperature period, the pesticide should be applied at high temperature. The application should be made before 10 o'clock in the morning and after 17 o'clock in the afternoon to ensure the safety of operators and crops.
3, strictly in accordance with the safe use of drug norms, and do a good job of security protection.
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