本工作以栽培大麦很普通的 Hordeum Sativum Iessen 种,多穗大麦亚种(Hordeum Vulgare L.)的六个品种为材料。通过从二叶期至七叶期幼穗分化的观察,探索青稞生长锥开始伸长到雌雄蕊分化为止这一阶段的特点与植株外部形态的表现。观察的植株以主茎为主。在小穗分化期同时观察主茎与分蘖幼穗发育的关系。观察结果是:除昆仑一号品种外,各品种从二叶期生长锥开始伸长,穗原始体开始分化。 In this work, six varieties of Hordeum Sativum Iessen, a common barley variety, and Hordeum Vulgare L. were cultivated. Through the observation of panicle differentiation from the second leaf stage to the seven-leaf stage, the characteristics of the stage and the external appearance of the plant were explored. The observed plants mainly stem. The relationship between main stem and tillering panicle development was observed simultaneously in the spikelet differentiation stage. The observation results are as follows: Except for the Kunlun No.1 variety, the varieties begin to elongate from the growth cone of the second leaf stage, and the spike primitives begin to differentiate.