The result showed that the enhanced UV-B radiation significantly affected the flowering process and greatly decreased the number of the differentive and propagative floweret.

• 结果表明，UV-B增加能显著降低小麦的每穗粒数；显著影响小麦的开花过程，表现为开花推迟，每日开花数大幅度下降，可孕小花数下降。