福建农业学报2016，Vol.31Issue(10)：1034-1038,5.DOI:10.19303/j.issn.1008-0384.2016.10.006
不同施氮量对杂交稻茎秆性状及抗倒伏性的影响
The Effect of Different Nitrogen Rates on Culm Traits and Lodging Resistance of Hybrid Rice
摘要
Abstract
The effects of different nitrogen rates on culm traits and lodging resistance were studied for a two-line super high-yielding hybrid rice combination Guangliangyou 676 .The results indicated that the length of internodes,especially the fourth and fifth internode from the top,increased with the increase of nitrogen application rates,and had an extremely significant positive correlation with nitrogen application rates,showing that nitrogen application could increase internode length of rice.The diameter of each internode increased with the increase of nitrogen application levels.Nitrogen application had no effect on culm wall thickness.The height and weight of each internode to the top of the spike all had a very closely significant correlation with nitrogen application levels.The breaking-resistant strength of each internode decreased with the increase of nitrogen application rates,but had no significant difference.The bending moment and lodging index both significantly increased with the increase of nitrogen fertilizer rates,and both had very closely significant relation to nitrogen application rates.Guangliangyou676 has better resistant lodging ability below 20 g·m-2 of nitrogen application rate,but is subj ected to lodging easily under excessive nitrogen fertilizers.关键词
杂交稻/施氮量/茎秆性状/抗倒伏性/影响Key words
hybrid rice/nitrogen application rates/culm traits/lodging resistance/effect分类
农业科技引用本文复制引用
房贤涛,何花榕,谢祖钦,张居念,卓传营,蔡光璟,杨惠杰..不同施氮量对杂交稻茎秆性状及抗倒伏性的影响[J].福建农业学报,2016,31(10):1034-1038,5.基金项目
福建省科技计划项目---省属公益类科研院所基本科研专项(2014R1021-3、2014R1021-10) （2014R1021-3、2014R1021-10）
福建省科技重大专项(2013NZ0002-2) （2013NZ0002-2）
福建省农业科学院科技创新团队PI小组建设项目(2016PI-17) （2016PI-17）
