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[目的]研究超级稻Ⅱ优602植株对N素水平和配置方式的动态反应。[方法]试验以II优602为材料,分析不同施N量及配置方式下功能叶、叶鞘、茎秆全N含量的动态变化。[结果]不同N素水平下功能叶的最高全N含量出现的时期不同,其中A3水平下以复水期最高。齐穗期、成熟期植株各部位的全N含量均表现为施肥处理>CK,功能叶>叶鞘>茎秆,而不同处理下,植株不同部位的全N含量表现出明显的差异。Ⅱ优602在成都平原种植,适宜的施N水平和配置方式为:N素165kg/hm2,底肥:追肥=6:4。[结论]该研究为超级杂交稻的高产栽培提供N素调控的理论依据。
[Objective] The research aimed to study the dynamic response of super rice Ⅱ You 602 plants to the N level and configuration. [Method] With the test of II you 602, the dynamic changes of total N content of functional leaves, leaf sheaths and stalks were analyzed under different N rates and configurations. [Result] The highest total N content of functional leaves appeared at different N levels, and the recovery period was the highest at A3 level. Full N content in all parts of heading and maturing stages showed fertilization> CK, functional leaves> leaf sheath> stems. However, under different treatments, total N content of different parts of plants showed obvious differences. Ⅱ You 602 planted in the Chengdu Plain, the appropriate level of N application and configuration: N 165kg / hm2, base fertilizer: top dressing = 6: 4. [Conclusion] This study provided the theoretical basis for the N regulation of high yielding super hybrid rice.