以超级杂交稻Q优6号为材料，研究了不同氮、磷、钾肥对水稻干物质积累、养分吸收及产量的影响。结果表明，随着施氮量的增加，水稻产量、有效穗数、每穗粒数逐步提高，而结实率下降，各生育时期叶面积指数（LAI）、干物质积累量均在最高施氮水平下为最大值；随着施磷量的增加，水稻产量、有效穗数和千粒重略微增加，而各生育时期LAI呈先增后减趋势，拔节期干物质积累量逐步提高；随着施钾量的增加，水稻产量、LAI逐步提高，而干物质积累量呈先增后减趋势；随着氮、磷、钾肥施用量的增加，水稻养分总吸收量和每100 kg籽粒养分需求量提高，养分收获指数、养分吸收利用率和养分农学利用率呈下降趋势。

The effects of different nitrogen, phosphorus and potassium levels on dry matter accumulation, nutrient uptake and yield of rice were studied, with super hybrid rice Q you 6 as materials. The results showed that the yield, effective panicles and spikelets per panicle increased gradually with the increase of fertilizer-N application, while seed setting rate decreased; leaf area index（LAI） and dry matter accumulation were at the highest level under maximum value of fertilizer-N application. The yield, effective panicles and 1000-grain weight were slightly increased with the application of fertilizer-P increased, while LAI increased at first and then decreased at every growth stage, and dry matter accumulation increased gradually at jointing stage. The yield and LAI increased gradually with the increment of K rates, while dry matter accumulation increased first and then decreased. As the application of nitrogen, phosphorus and potassium fertilizer improved, total nutrient uptake of rice and demand of grain nutrients per 100 kg increased, while nutrient harvest index, nutrient recovery efficiency and agronomic efficiency showed a decreasing trend.