Powdery mildew pathogens are warm and humid, resistant to dryness, high temperature drying and alternating humidity are beneficial to the development of diseases, which can occur throughout the growth period of cantaloupe, and can infect leaves, petioles and stems. The prevention methods are as follows:
1. Choose the right variety and disease resistant variety. Before planting, pesticide fungicides such as carbendazim and nail cream can be used for sterilization.
2. Planting with sorghum, reasonable close planting, pay attention to ventilation and ventilation; scientific fertilization, apply sufficient base fertilizer when planting, increase phosphorus and potassium fertilizer, avoid post-fertilization, cultivate strong seedlings; timely irrigation, pay attention to irrigation and irrigation, prevent excessive humidity in the field; Timely pruning and forking, and found that the diseased plants were removed in time.
3. It can be prevented by regular fumigation with sulfur fumigator.
4. In the early stage of the disease, use 2% agricultural anti-120 water agent, or 2% Wuyincin water agent 200-300 times liquid, or 43% bacterial strength suspension agent 8000 times liquid, or 10% high water dispersible granules 8000 times Liquid, or 40% Fuxing emulsifiable concentrate 8000 times solution, or 25% Bai Li Tong WP 2500 times solution, or 30% Teflon WP 4000 times solution, or 25% tebuconazole 1000-1500 times solution. In the early stage of the cultivation of the protected land, 5% chlorothalonil dust or 5% garamine dust, or 15kg/hm2 dust spray of the above spray agent is used, and the control effect is ideal.
Powdery mildew has a great influence on the growth of cantaloupe, so the disease prevention and control work must be done.
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