Abstract: Late super hybrid rice Wufengyou T025 was used to investigate the effects of different nitrogen（N） application on absorption, transportation and distribution of nutrient and yield in rice. The results showed that there was an obvious interaction N application on N, phosphorus（P）, potassium（K） absorption and transfer at different growth stages under N application, and the reasonable N application is benefit to promote the absorption of various nutrients and transfer. In this experiment, the nutrient transfer amount and the contribution rate of nutrient to panicle of leaves and stem-sheaths were increased with the increase of the percentage of tillering fertilizer in N fertilizer. The amount of N, P, K nutrient transfer increased up to 17.1%, 21.2% and 14.8%, respectively. Under the total pure nitrogen amount of 195 kg/hm2，the best model of the N application is basal（50%）, tillering（20%）, and panicle （30%）.

Key words: super rice, N application, nutrient absorption, transfer and distribution

摘要： 为研究不同氮肥运筹对超级杂交晚稻五丰优T025养分吸收、转运、分配及产量的影响，并探讨各养分及其与产量的相互关系，开展了本试验。结果表明，在不同氮肥运筹条件下，水稻各生育期氮、磷、钾的吸收、转运均存在明显的协同效应，且合理的氮肥运筹能促进各养分的吸收及转运。在本试验条件下，随分蘖肥比例的提高，孕穗期至成熟期水稻叶片及茎鞘各养分转运总量和穗部来源于叶片及茎鞘各养分转运的贡献率均有增大的趋势。孕穗期至成熟期叶片和茎鞘氮、磷、钾养分转运量最高分别达17.1%、21.2%、14.8%。在纯氮用量为195 kg/hm2时，基肥、蘖肥、穗肥最佳施肥比例为5∶2∶3。

关键词: 超级稻, 氮肥运筹, 养分吸收, 转运及分配