1. Banana black star disease from the lower leaves at the beginning of the onset of drug application, whole-plant spraying, water to 60-100 kg / mu, evenly sprayed leaves and leaf back, three consecutive times, each interval of 10-15 days. 2. Wheat red mold disease early in the occurrence of uniform spraying, water to 30-60 kg / mu, in the early flowering of wheat applied once again at the bloom period, two consecutive applications. Kg/mu, in the early flowering of wheat applied once, the full flowering period and then applied once, two consecutive applications. The interval between each application is 7-10 days. 3. When controlling rice blast disease, the first spraying is carried out 5-7 days before the rice breaks. 5-7 days before the first spray application, and again after an interval of 7-10 days. Before the onset of rice blast or blight or at the early stage of the onset of rice blight or blight evenly sprayed with water, the amount of water 30-60 kg / mu, and then applied again after an interval of 7-10 days.4. Do not apply the drug if it is windy or rain is expected to fall within 1 hour.5. Safety interval: 42 days for banana, 28 days for wheat, and 30 days for rice; the maximum number of times of use for each season of the crop: 3 times for banana, 2 times for wheat and rice.