裸燕麦(莜麦)是我国华北北部高寒地带的主要粮食作物之一,在生产上经常出现一种群众称之为“莜麦花梢”的现象,即花序上一部分小穗退化成不孕小穗,不孕小穗的小穗梗纤细弯曲,颖和稃均较小、呈黄白色。据我们在内蒙古自治区主要莜麦产区的调查,一 Naked oat (Oatmeal) is one of the main food crops in the alpine region of north China’s northern part of the country, often appears in the production of a phenomenon called “oatmeal fan”, that part of the inflorescence degenerated spit into infertile small Spike, spikelets of infertile spikelets slenderly curved, Ying and 稃 are smaller, yellowish white. According to our survey in major 莜 wheat producing areas in Inner Mongolia Autonomous Region,