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通过对冬、春青稞,冬、青小麦代表品种的分蘖成穗,幼穗分化,籽粒灌浆规律和产量因于构成特点连续四年的系统观察、比较,分析明确了冬青课的增产机理.证实:(1)苗期持续时间长,生长缓慢极有利于分蘖发生成穗.(2)幼穗分化特别是单棱期比春青稞长140和60多天,从而使三联小穗基(原基)分化数猛增,典定了粒多大穗的基础,这是冬稞增产的内在原因.
Through the system observation, comparison and analysis of tillering, panicle spike, young panicle differentiation, grain filling regularity and yield of the representative varieties of winter, spring vernal, winter and young wheat for four consecutive years, the mechanism of increase yield of holly class was confirmed. : (1) The long duration of seedling and the slow growth of seedlings were very helpful for tillering to become panicles. (2) The panicle differentiation was more than 140 and 60 days longer than that of spring chrysanthemum, ) The sharp increase in the number of divisions, the Code set the basis for how much grain spike, which is the inherent reason for the winter crop yield.