Chinese cabbage anthracnose is an important disease of early-maturing Chinese cabbage. It is widely distributed, and it is easy to reduce production and income. Rainy areas or years are generally more serious. The disease damages the leaves, petioles, and veins, and it also harms pedicels and pods. Anthrax is a disease of high temperature and high humidity. When the seasonal temperatures in August and September are high, combined with more rain, the occurrence of anthrax will increase. The following technical measures should be taken:
First, agricultural measures. 1. Rotate with non-cruciferous vegetables for 1 to 2 years; 2. The late stage of high-incidence plots should be planted in a timely manner, and close-packed in a timely manner to eliminate water in time; 3. Pay attention to the clean garden.
Second, seed processing. 1. Seeds are collected from disease-free or disease-free plants; 2. Seeds are soaked in warm water at 50°C for 15 minutes, soaked after cooling and drying; or can be seeded with 80% anthraquinone omeprazole wettable powder with a seed weight of 0.3%, or 0.4% seed weight of 50% thiram WP or 50% carbendazim wettable powder dressing.
Third, the chemical control 1, the disease just occurred, can be sprayed 2% pyrimidine nucleoside antibiotic agent 200 times liquid, sprayed every 5 to 6 days, even spray 2 to 3 times; 2, the early stages of disease, can use more than 40% Bromofoetide WP 400 to 500 times, or 70% thiophanate-methyl WP 1000 times plus 75% chlorothalonil wettable powder 1000 times, 50% urea wettable powder 800 times, 80% Anthraquinone Fumei WP 500 times, 40% Polysulfide Suspension 700 to 800 times, 40% Seed Double WP 500 times, 70% Mancozeb WP 500 times, 50% Prochloraz WP 1500 times, 50% Prochloraz WP 1500 times, 30% benzothiophene EC 1300 times, 1% Polyoxine 300 times, 68.75% oxazole Fenoxone water dispersible granules 800 times, 50% mixed sulfur suspension 500 times, 25% bromotric nitrile wettable powder 500 times, 2% Wuyimycin water 200 times spray control, dosage is generally For 45-60 kilograms per mu, a variety of agents are used alternately, sprayed every 7-10 days, and sprayed 2 or 3 times.
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