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中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (9): 1-5.doi: 10.11924/j.issn.1000-6850.casb15080147

所属专题： 水稻

• 农学 农业基础科学 •    下一篇

节水灌溉条件下施肥与密度对双季晚稻丰源优299产量和稻米品质的影响

龙文飞,傅志强,钟娟   

  1. 湖南农业大学农学院,湖南农业大学农学院,湖南农业大学农学院
  • 收稿日期:2015-08-28 修回日期:2016-02-16 接受日期:2015-10-23 出版日期:2016-03-29 发布日期:2016-03-29
  • 通讯作者: 傅志强
  • 基金资助:
    国家科技支撑计划项目“长江中游南部（湖南）双季稻持续丰产高效技术集成创新与示范”(2011BAD16B01)，“双季稻抗逆均衡增产技术研究与示范”(2012BAD04B10)，“长江中游南部（湖南）水稻丰产节水节肥技术集成与示范”(2013BAD07B11)。

Effects of Fertilization and Density on Yield and Grain Quality of Late Rice ‘Fengyuanyou299’Under the Condition of Water Saving Irrigation

  • Received:2015-08-28 Revised:2016-02-16 Accepted:2015-10-23 Online:2016-03-29 Published:2016-03-29

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摘要： 本试验采用裂区设计对节水灌溉条件下不同施氮量和栽植密度对双季晚稻‘丰源优299’的产量和品质的影响进行了研究。试验结果表明：随着施氮量的增加，稻米垩白粒率、垩白度和蛋白质含量分别增加8.5%~20.0%、0.8%~1.8%、7.0%~43.4%，胶稠度、直链淀粉含量分别降低5.8%~20.3%、3.7%~6.6%。随着栽植密度的增加，碾米品质和稻米蛋白质含量先增加后降低，垩白粒率、胶稠度及稻米直链淀粉含量有减少的趋势，而垩白度有增加的趋势。施氮量为135 kg/hm2，密度为30万穴/hm2时，增产1.0%~34.7%，为最优的施肥与栽植密度组合。

关键词: 烟草, 烟草, 水杨酸, 核黄素, 草酸, 诱导抗性

Abstract: Field experiments with split block design under water saving irrigation were conducted to investigate the effect of different nitrogen fertilizer levels and planting densities on grain yield and rice quality of the double cropping late rice cultivar‘Fengyuanyou299’. The results showed that the chalky rice rate, chalkiness degree and protein content increased by 8.5%-20.0%, 0.8%-1.8% and 7.0%-43.4%, respectively, with the increase of nitrogen application amount, while the gel consistency and amylose content decreased by 5.8%-20.3% and 3.7%-6.6%. The milling quality and rice protein content increased first and then decreased with the increase of planting density, the chalky ratio, gel consistency and amylose content showed a downward trend, however, the chalkiness degree increased. In this research, the grain yield increased by 1.0%-34.7% when the nitrogen application rate was 135 kg/hm2 and the planting density was 300000 hill/hm2, it was the optimal treatment combination.