在小麦成熟前后若处于阴雨潮湿的环境中就会引起穗部发芽。穗发芽不仅会降低容重,影响产量,还会降低小麦的制粉品质和烘烤品质。因此,世界各国小麦遗传育种工作者都十分重视小麦穗发芽的研究工作。 在我省淮南麦区,小麦成熟期约有三分之一的年份为阴雨天气,有些年份平均2～2.5天就有一个雨日,小麦很容易穗发芽。 Before and after the maturity of wheat in rainy and humid environment will cause spike sprouting. Sprouting will not only reduce the bulk density, affecting the yield, but also reduce wheat milling quality and baking quality. Therefore, all countries in the world of wheat genetics and breeding workers attach great importance to wheat ear sprout research. In the province of Huai’nan, our province, about one-third of the mature wheat is cloudy and rainy weather. In some years, there is a rainy day with an average of 2 ~ 2.5 days. Wheat is easy to sprout.