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研究了四种氮水平和四种钾水平对小麦氮素营养的影响。结果表明,各生育期植株不同器官的磷浓度随着供氮水平的提高而增加,而与体内的氮浓度呈极显著的正相关,在不同的钾水平下,磷浓度的差异相对较小,并与体内的钾浓度具有负向联系。不同氮钾水平对小麦植株磷浓度的影响也因器官而异。小麦各生育期地上部磷的积累量随氮钾用量的提高而增加。本文对不同氮钾水平下植株各器官的磷浓度变化及其与体内氮钾浓度的关系,小麦磷素营养状况的诊断指标以及磷肥的合理施用等作了分析和讨论。
The effects of four nitrogen levels and four potassium levels on nitrogen nutrition of wheat were studied. The results showed that the phosphorus concentration in different organs of different plants increased with the increase of nitrogen supply, but had a very significant positive correlation with the nitrogen concentration in different growth stages. The differences of phosphorus concentrations were relatively small under different potassium levels, And with the body’s potassium concentration has a negative relationship. The effects of different N and K levels on the phosphorus concentration in wheat plants also vary depending on the organ. The accumulation of aboveground phosphorus in wheat increased with the increase of nitrogen and potassium. In this paper, the changes of phosphorus concentration in various organs of plants under different nitrogen and potassium levels and its relationship with the concentration of nitrogen and potassium in the body, the diagnostic index of phosphorus nutrition in wheat and the rational application of phosphorus fertilizer were analyzed and discussed.