Control Object : The new broad-spectrum fungicide is a new broad-spectrum fungicide. Mechanism of action: to prevent the electronic transfer of mitochondrial respiratory inhibitors. Protective, treatment, and leaf osmotic conduction. Pyraclostrobin EC field efficacy tests results show that had better control effect on cucumber powdery mildew, downy mildew and scab of banana, leaf spot disease, sclerotium disease. Application The dosage of cucumber powdery mildew, downy mildew is an effective component of 75 ~ 150g/ hm2 (converted to EC is 20-40mL/667m2). Diluted with water in the early onset of uniform spray. Spray 3~4 times. Spray the medicine 1 times interval 7d. The concentration of effective components in control of banana scab, leaf spot disease is 1000-3000 times of 83.3-250mg/kg (dilution) the onset of began to spray. Spray 3 times, interval of 10 days injection 1 time medicine. The spraying times vary depending on the cause. The cucumber, banana safe, no phytotoxicity occurred.