Tobacco injury symptoms were determined for each pesticide at both safe and experimental application rates.Wettable powder formulations produced a low level of injury on leaves of tobacco seedlings.

• 结果明确了各种药剂对烟苗的安全用药剂量和试验剂量内的药害症状，可湿性粉剂容易引起烟苗叶片轻微药害。