To ascertain the characteristics of yield formation, dry matter production and the nutrient uptake and utilization of nitrogen （N）, phosphorus （P） and potassium （K） between super hybrid rice and conventional rice, taking similar panicles size of super hybrid rice （Liangyou peijiu, Y Liangyou 1） and conventional rice （Huanghuazhan, Yuxiangyouzhan） as materials, the field experiment with high N level （225 （kg/hm2）, medium N level （113～161 kg/hm2）, and no N level （0 kg/hm2） was conducted in Changsha （N 28°12′） from 2011 to 2013. The results showed that super hybrid rice yield in average 9.55 and 9.57 t/hm2 rice grains, produced averagely 18.05 and 18.24 t/hm2 dry matter and assimilated averagely 189.5 and 193.9 kg/hm2 N at maturity stage, of which increased significantly by 5.99% and 9.38%, 7.12% and 11.22%, 5.45% and 4.41% compared with conventional rice, respectively. Both super hybrid rice and conventional rice showed the nonlinear relationship of quadratic function between the grain yield and the N, P, K uptake rates and the multiple correlation coefficient was significant. Requirements for N, P and K of super hybrid rice were up to 19.79 and 20.09 kg, 3.90 and 4.09 kg, 20.57 and 22.37 kg, respectively, of which was significantly lower than that of conventional varieties. Under the condition of nitrogen application, there was a significantly linear correlation between the grain yield and the N, P, K nutrient requirements. Nitrogen recovery efficiency and its partial productivity showed the significant difference among tested varieties, but the agronomy efficiency and physiological utilization efficiency did not show the significant difference among the varieties. Nitrogen harvest index of super hybrid rice was as high as 68.6% and 69.1% and significantly higher than that of conventional rice （62.7% and 64.0%）, but no significant difference of N grain production efficiency was observed among the varieties. It is concluded that the high-yielding super hybrid rice was coordinated with the N, P, K nutrients utilization.
XIA Bing, JIANG Peng, XIE Xiao-Bing, ZHAO Yang, WEI Ying-Juan, HUANG Min, ZOU Ying-Bin-*
. Comparative Study on Yield Formation and Nutrient Uptake and Utilization between Super Hybrid Rice and Conventional Rice[J]. China Rice, 2015
, 21(4)
: 38
-43
.
DOI: 10.3969/j.issn.1006-8082.2015.04.007
[1] Singh U, Ladha J K, Castillo E G, et al. Genotypic variation in nitrogen use efficiency in medium- and long-duration rice [J]. Field Crops Res, 1998, 58（1）:35-53
[2] 单玉华，王余龙，山本由德，等. 不同类型水稻在氮素吸收及利用上的差异[J]. 扬州大学学报：自然科学版，2001，4（3）：42-45.
[3] Inthapanya P, Sipaseuth, Sihavong P, et al. Genotype differences in nutrient uptake and utilization for grain yield production of rainfed lowland rice under fertilised and non-fertilised conditions [J]. Field Crops Res, 2000, 65：57-68.
[4] 江立庚，戴廷波，韦善清，等. 南方水稻氮素吸收与利用效率的基因型差异及评价[J]. 植物生态学报，2003，27（4）：464-471.
[5] 张岳芳，王余龙，张传胜，等. 籼稻品种间氮素吸收利用的差异及其对产量的影响[J]. 江苏农业学报，2006，22（4）：318-324.
[6] Ohnishi M, Horie T, Homma K, et al. Nitrogen management and cultivar effects on rice yield and nitrogen use efficiency in Northeast Thailand [J]. Field Crops Res, 1999, 64: 109-120.
[7] 石庆华，徐益群，张佩莲，等. 籼粳杂交稻的氮素吸收特性及其对库源特征的影响[J]. 江西农业大学学报，1994，16（6）：333-339.
[8] 邹应斌，敖和军，夏冰，等. 不同氮肥施用对杂交稻产量及其氮素利用效率的影响[J]. 作物研究，2008，22（4）：214-229.
[9] Tala Gueye, Heiko Becker. Genetic variation in nitrogen efficiency among cultivars of irrigated rice in Senegal[J]. J Agric Biotech Sustain Dev, 2011, 3（3）: 35-43.
[10] 董桂春，王余龙，张传胜，等. 氮素籽粒生产效率不同的籼稻品种物质生产和分配的基本特点[J]. 作物学报，2007，33（1）：137-142.
[11] 张耀鸿，张亚丽，黄启为，等. 不同氮肥水平下水稻产量以及氮素吸收、利用的基因型差异比较[J]. 植物营养与肥料学报，2006，12（5）：616-621.
[12] 黄农荣，钟旭华，郑海波. 水稻氮高效基因型及其评价指标的筛选[J]. 中国农学通报，2006，22（6）：29-34.
[13] Xue Y G, Duan H, Liu L J, et al. An improved crop management increases grain yield and nitrogen and water use efficiency in rice [J]. Crop Sci, 2013, 53: 271-284.
[14] T Lafarge, C S Bueno. Higher crop performance of rice hybrids than of elite inbreds in the tropics: 2. Does sink regulation, rather than sink size, playamajor role[J]. Field Crops Res, 2009, 112: 238-244.
[15] A A Abou Khalifa. Physiological evaluation of some hybrid rice varieties under different sowing dates[J]. Aust J Crop Sci, 2009, 3 （3）: 178-183.
[16] Yang J C，Peng S B，Zhang Z J，et al. Grain and dry matter yields and partitioning of assimilates in japonica / indica hybrid rice[J]. Crop Sci，2002，42（3）：766-72.
[17] 夏冰，刘清波. 不同基因型水稻氮素的吸收和利用效率研究综述[J]. 作物研究，2008，22（4）：288-292.
[18] 夏冰，刘清波，敖和军，等. 超级杂交稻氮素吸收利用的基因型差异及其产量表现[J].作物研究， 2008，22（4）：30-33.
[19] 彭少兵，黄见良，钟旭华，等. 提高中国稻田氮肥利用率的研究策略[J]. 中国农业科学，2002，35（9）：1 095-1 103.
[20] 凌启鸿，张洪程，戴其根，等. 水稻精确定量施氮研究[J].中国农业科学，2005，38（12）：2 457-2 467.
[21] 张杨珠，黄运湘，邹应斌，等. 双季稻一次性全层施肥技术的研究与示范推广[J]. 中国农业科技导报，2001，3（6）：36-41.
[22] 敖和军，王淑红，邹应斌，等. 不同施肥水平下超级杂交稻对氮、磷、钾的吸收累积规律[J]. 中国农业科学，2008，41（10）：3 123-3 132.
