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掌握三麦(小麦、大麦、元麦)幼穗分化特点,合理地应用良种,是实现三麦持续稳产高产的一个关键。根据我们观察,三麦幼穗分化有三个特点,在应用品种时尤其需要注意: 一、春性和半冬性品种与冬性品种幼穗分化的早迟不同。一般春性和半冬性品种幼穗分化较早,而冬性品种幼穗分化较迟。据观察,春性和半冬性品种秋播,4叶期就进入了生长锥伸长期,这时幼穗已经开始分化了;冬性品种秋播5叶期生长锥伸长,幼穗
Grasping the characteristics of panicle differentiation of three wheat (wheat, barley, and wheat) and using the fine seed rationally are the keys to achieve a steady and high yield of three wheat. According to our observation, three wheat spike differentiation has three characteristics, especially in the application of varieties need attention: First, spring and semi-winter varieties and winter varieties spike differentiation at an early stage. The panicle differentiation of spring and semi-winter varieties was earlier, but that of winter varieties was later. It was observed that spring and semi-winter varieties of autumn sowing, 4-leaf stage into the growth cone elongation period, when the panicle has begun to differentiate; winter varieties of autumn 5-leaf growth cone elongation, panicle