They could increase the yield of pre-frost cotton, improve the fiber quality of lint cotton in appropriate dosage and concentration, but could not increase total cotton yield and bolls.

• 芸苔素内酯和复硝钠在适宜的剂量和浓度下可以促进棉花吐絮，增加霜前花产量，并改善棉花纤维品质，但不能增加棉铃总数和棉花总产量。