小麦穗发芽是小麦收获前遇连阴雨天气造成的一种自然灾害。穗发芽不仅给当年小麦生产造成损失，还因种子产量降低、质量下降影响下一年生产。穗上发芽的小麦，营养品质和加工品质均明显下降，严重的会失去食用价值。穗上发芽的种子丧失再发芽能力，即使穗上只发生轻微萌动，也 Sprouting of wheat is a natural disaster caused by the rainy weather before wheat harvest. Sprouting not only caused the loss of wheat production in that year, but also affected the production of the next year due to the decrease of seed yield and the decline of quality. Sprouted wheat, nutritional quality and processing quality were significantly decreased, the serious loss of food value. Sprouted seeds lose their ability to re-sprout, even if only slight sprouting occurs on the ear