皮大麦不仅始穗早,气温低,花期长,更重要的是因为它是闭花授粉(授粉时内外颖不开张,花药不外露),这就很难断定它究竟扬花没有?这也是水田三熟制后防治皮大麦赤霉病的一个突出问题。据最近四年来的观察:“亮麦”的普遍出现,可以认为是防治适期的到来。这是因为:“亮麦”的出现是在抽穗之后直到授粉的日子里,差不多连续碰到阴雨雾露天气,使得一部分穗上的个别小穗的雄蕊退化,不能立即授粉,这种退化小穗的子房异常膨 Bark of barley is not only the beginning of the ear early, low temperature, long flowering period, more importantly, because it is closed pollination (pollination inside and outside Ying not open, anthers are not exposed), it is difficult to determine whether it blooming? This is paddy three A prominent problem in preventing and curing scab after scald. According to the observation of the past four years, the general appearance of “bright wheat” can be considered as the arrival of the preventive phase. This is because the emergence of “Liangmai” occurs almost continuously in rainy days after heading until the pollination days, so that the stamens of individual spikelets on some of the ears degenerate and can not be pollinated immediately. Such degenerated spikelets Ovary abnormal expansion