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对高肥条件下6个玉米品种地上部氮磷钾含量变化的研究发现,随着玉米的生育进程,氮和钾含量总的趋势是逐渐降低,而磷含量围绕一个值上下波动,单株氮磷钾的积累均可以用逻辑斯蒂方程来描述。氮和钾的积累速率呈单峰曲线,由于最大值出现较早,表明钾素积累快于氮素(抽雄前),而磷素的积累速率明显低于前两者(吐丝后),而且品种间存在差异,部分呈单峰曲线,部分近似线性,表明后期积累持续增加。
The results showed that with the growth of maize, the general trend of nitrogen and potassium content decreased gradually, while the content of phosphorus fluctuated around a value, and the nitrogen per plant The accumulation of phosphorus and potassium can be described by the Logistic equation. The accumulation rate of nitrogen and potassium showed a single peak curve. Since the maximum appeared earlier, the accumulation of potassium was faster than that of nitrogen (before tasselling), while the accumulation rate of phosphorus was significantly lower than that of the former two (after silking) There are differences between varieties, some showed a single peak curve, part of the approximate linear, indicating that the late accumulation continued to increase.