In summer, it is hot and rainy, and vegetables are prone to disease, which affects the appearance and quality of food, and the production is greatly reduced. Therefore, it should be planned and controlled.
The seedlings of the epidemic disease tend to collapse, and the roots and stems are easily rotted during the adult stage. Especially the roots near the soil are water-stained until the brown spots are rapidly blackened and collapsed, which is easy to cause falling flowers and fruits. Pepper is the most common. For prevention and treatment, the first one is seed treatment. After soaking for 10 to 60 minutes with 10% formaldehyde (formalin) solution, it is rinsed out and then sown. The second is to use 98% copper sulfate in July-August every year to fill the roots with 0.8-1.2 kg per 667 square meters of water and 100-150 kg. Third, the plant is sprayed with 40% Ethylphosphorus aluminum wettable powder 400-600 times liquid, or 25% Frosting 400-600 times liquid at the beginning of the disease; it can also be sprayed with 400 times liquid of Streptomyces cerevisiae and sprayed with 600 times liquid; Use 22% frost urea zinc wettable powder 500 ~ 650 times liquid, spray once every 7 days, even spray 2 ~ 3 times; 50% carbendazim wettable powder 500 ~ 800 times liquid spray; 64% antivirus 矾500 times liquid spray. 
The fungal disease of gray mold can be harmful to tomatoes, eggplants, gourds, and the like. It is mainly controlled by 50% carbendazim or polymycete. Spraying with 600 to 800 times of liquid, spraying once every 7 to 10 days, for 2 to 3 times in a row, the effect is particularly good.
Downy mildew is mainly caused by tomato, eggplant, pepper, cucumber and so on. It can be sprayed with 72% frost urea·manganese zinc wettable powder, “Frost Clear†600-700 times liquid, spray once every 7 days, continuous spraying 3~4 times; 72.2% Plex water can also be used 600 to 800 times of liquid spray 2 to 3 times, each time interval of 7 days; can also be sprayed with 70% Paterson WP 1500-600 times liquid.
The seedlings of the epidemic disease tend to collapse, and the roots and stems are easily rotted during the adult stage. Especially the roots near the soil are water-stained until the brown spots are rapidly blackened and collapsed, which is easy to cause falling flowers and fruits. Pepper is the most common. For prevention and treatment, the first one is seed treatment. After soaking for 10 to 60 minutes with 10% formaldehyde (formalin) solution, it is rinsed out and then sown. The second is to use 98% copper sulfate in July-August every year to fill the roots with 0.8-1.2 kg per 667 square meters of water and 100-150 kg. Third, the plant is sprayed with 40% Ethylphosphorus aluminum wettable powder 400-600 times liquid, or 25% Frosting 400-600 times liquid at the beginning of the disease; it can also be sprayed with 400 times liquid of Streptomyces cerevisiae and sprayed with 600 times liquid; Use 22% frost urea zinc wettable powder 500 ~ 650 times liquid, spray once every 7 days, even spray 2 ~ 3 times; 50% carbendazim wettable powder 500 ~ 800 times liquid spray; 64% antivirus 矾500 times liquid spray. 
The fungal disease of gray mold can be harmful to tomatoes, eggplants, gourds, and the like. It is mainly controlled by 50% carbendazim or polymycete. Spraying with 600 to 800 times of liquid, spraying once every 7 to 10 days, for 2 to 3 times in a row, the effect is particularly good.
Downy mildew is mainly caused by tomato, eggplant, pepper, cucumber and so on. It can be sprayed with 72% frost urea·manganese zinc wettable powder, “Frost Clear†600-700 times liquid, spray once every 7 days, continuous spraying 3~4 times; 72.2% Plex water can also be used 600 to 800 times of liquid spray 2 to 3 times, each time interval of 7 days; can also be sprayed with 70% Paterson WP 1500-600 times liquid.
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