期刊论文

Effect of Nitrogen Application Rate on Yield, Quality and Nitrogen Utilization Efficiency of Super Early Rice

中文

作物研究

1001-5280

2013

27

1

9-14

10.3969/j.issn.1001-5280.2013.01.03

湖南省重大科技专项（2006NK1001） 湖南省自然科学基金项目（09JJ4008）.

本校为第一机构

以株两优819和陆两优996为材料,研究了施氮量对超级早稻产量形成、稻米品质与氮利用效率的影响。结果表明:（1）施氮使超级早稻显著增产,株两优819增产的原因是提高了每穗粒数,而陆两优996增产的原因是提高了每穗粒数和千粒重;（2）两组合N 225 kg/hm2处理较N 150 kg/hm2处理显著减产;（3）两组合稻米蛋白质含量随施氮量增加而升高,直链淀粉含量随施氮量增加而降低;（4）超级早稻产量与叶面积、干物质积累量呈正相关,与粒叶比呈负相关;（5）随施氮量增加,两组合的氮素累积量显著提高,氮肥利用率、氮肥效率、氮素吸收效率、氮生理效率、氮素利用效率显著降低。本试验条件下,施N150 kg/hm2能使超级...

Zhuliangyou 819 and Luliangyou 996 were used as materials to study the effects of N application rate on yield formation, rice quality and N utilization efficiency of supper early rice. The results indicated that ： （ 1 ） Yield of super ear- ly rice was increased significantly by N application, which was induced by increase of grain number per panicle for Zhu- liangyou 819 and increase of grain number per panicle and 1000 - grain weight for Luliangyou 996. （2） Yield in treatment of N225 kg/hm2 was significantly lower than that in treatment o...