Pesticides commonly used during the tobacco seedling stage were spray applied at both recommended and higher rates to determine phytotoxicity in a greenhouse floating seedling assay.

• 摘要在漂浮育苗大棚内，选取烟草苗期常用农药，以推荐剂量和超推荐剂量，采用喷雾方式进行药剂药害试验。