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在我们这里,适期早播的麦苗,若在适宜的气候条件影响下,不仅主茎生长锥能发育成穗的原始体,而且它的第一、二、三个一级分蘖,也能分化成穗的原始体。这种“带穗越冬”的麦苗,随着气温的回升,大地解冻,麦田开始“返浆”,幼穗继续分化。幼穗分化速度的外因条件,固然与适宜的温度延长分化时间有关,更重要的是营养供应要充足,这是加速幼穗分化的主要条件。因此,对于这种麦田,要因地、因苗、因肥,把追施肥浇水时期适当提前,以求既能促进跨年度叶片和茎生叶片的伸长和增厚,还能控制无效分蘖和提高单株成穗率,以及起到攻大穗、攻粒多的作用。为此,要采取相应的管理措施。
In our case, wheat seedlings planted early, if under the influence of appropriate climatic conditions, not only the main stem growth cone can develop into a spike of the original body, and its first, second and third grade tillering, but also differentiation Into the original body. This “spike wintering” wheat seedlings, with the temperature rise, the earth thaw, the wheat field began to “return to pulp”, panicle continue to differentiate. Spike differentiation rate of external conditions, of course, with the appropriate temperature to extend the differentiation time, more importantly, nutrient supply to be adequate, which is to accelerate the spike differentiation of the main conditions. Therefore, for such wheat fields, due to the ground, because of seedlings, due to fertilizer, fertilizer and watering the top of the appropriate early in order to not only to promote cross-year leaf and stem blades of the elongation and thickening, but also control the ineffective tillering and increase Spike rate per plant, and play a major attack spike, agglomeration of the role. To this end, we must take appropriate management measures.