In the experiment, Azolla imbricate (Aoxb.) Nakai was chosen as the index plant in laboratory bioassay, which were used to assess the effect of glyphosate and paraquat.

• 选用蕨类植物满江红作为指示植物，以测定灭生性除草剂百草枯和草甘膦对蕨类植物的控制效果。