1. This product should be used before the onset of rice sheath blight or in the early stage, and the water consumption should be ensured when spraying, spraying evenly, spraying into the middle and base of rice plants, and continuous application 2-3 times. Wheat powdery mildew and rust are used in the early stage of the disease, and wheat scab is routinely sprayed in the early stage of wheat flowering, which can be applied 2 times, with an interval of 7-10 days for 1 time, and the water amount is 30-50 kg/mu, and the spray is uniform and considerate to ensure the control effect. 2. Do not apply medicine on windy days or rain is expected within 1 hour. 3. The safety interval of rice is 30 days, and the maximum application of medicine is 3 times per season; The safety interval of wheat is 28 days, and the maximum application of medicine is 2 times per season.