1. The control of wheat scab should be sprayed at the early stage of flowering, and the control of wheat powdery mildew, rust, sheath blight, corn big spot and pepper anthracnose should be sprayed before or at the early stage of the disease. Wheat powdery mildew, rust, corn big spot can be used twice, once every 7-10 days. Wheat sheath blight, pay attention to the liquid spray and the lower part of the plant, and spray again at an interval of 7-10 days. Pepper anthracnose, applied once every 7-10 days, can be used 3 times. 2. Safe interval: wheat 35 days, corn 21 days, pepper 5 days; Maximum number of uses per season crop: wheat, corn 2 times, pepper 3 times. 3. Wheat, corn, pepper water 30-50 kg/mu or according to the actual local agricultural production water spray evenly, to achieve the liquid spray to the leaf surface wet and just not dripping is appropriate. 4. Do not apply medicine on windy days or rain is expected within 1 hour.