不同氮素水平对杂交水稻产量性状的影响  

Effects of Different Nitrogen Levels on Yield Traits of Hybrid Rice

作　　者：韦叶娜 张杰[1] 杨国涛[1] 李亚男[1] 范永义 蒋芬[1] 陈敬[1] 胡运高[1] 

机构地区：[1]西南科技大学水稻研究所,四川绵阳621010

出　　处：《中国农学通报》2016年第24期6-10,共5页Chinese Agricultural Science Bulletin

基　　金：长江上游地区杂交水稻骨干恢复系种群划分及高产机理研究"国家科技支撑计划"(2014KF01);突破性水稻新材料的创制和应用"四川省省属高校科研创新团队建设计划"(14TD0011);四川水稻创新团队岗位专家"国家现代农业产业技术体系四川水稻创新团队岗位专家项目"(川农业函[2014]91号)

摘　　要：为研究杂交水稻在不同氮素水平下的产量性状差异,以生产上大面积推广应用的4个高产优质的水稻品种(‘宜香优2115’、‘冈优188’、‘宜香优1577’、‘冈优1577’)为材料,选择不同氮素水平进行试验。结果表明:水稻的品种和氮素水平的互作共同调控水稻的产量性状,‘宜香优2115’在不同氮素水平的产量差异不显著,‘冈优188’随氮素水平提高,产量显著增加,‘宜香优1577’和‘冈优1577’在正常氮素水平产量表现最好。在不同氮素水平下各产量性状对产量影响的大小顺序为:穗着粒数>穗长>结实率>有效穗数,穗着粒数对产量的影响最大。因此,不同水稻品种对氮素敏感程度存在显著差异,在生产上需要根据田间肥力水平选择适合的水稻品种。In order to study the yield traits of hybrid rice under different nitrogen levels, four high-yield hybridrice varieties（‘Yixiangyou 2115＇,‘Gangyou 188＇,‘Yixiangyou 1577＇,‘Gangyou 1577＇） which were widelyapplied were used as materials in the nitrogen level experiments. The results showed that yield traits wereregulated by rice varieties and nitrogen levels. The yields of‘Yixiangyou 2115＇were not significantly differentunder different nitrogen levels. With the increase of nitrogen level, the yield of‘Gangyou 188＇increasedsignificantly.‘Yixiangyou 1577＇and‘Gangyou 1577＇exhibited the highest yield under normal nitrogen level.The order of the effects of the yield traits on yield under different nitrogen levels was grain number of perspike panicle length seed set percentage effective panicle, and the effect of grain number of per spikewas very remarkable. Therefore, there were significant differences in the sensitivity of different hybrid ricevarieties to nitrogen. In production, the optimal hybrid rice variety needs to be selected according to the fieldfertility level.

关 键 词：杂交水稻 氮素水平 产量性状 

分 类 号：S511.21[农业科学—作物学]