不同产量水平超级杂交稻抗倒伏差异研究  

Study on Lodging Resistance Characteristics of Super Hybrid Rice with Different Yield Levels

作　　者：金文雨 张玉烛[1,2] 魏中伟[2] JIN Wen-yu;ZHANG Yu-zhu;WEI Zhong-wei(College of Agronomy,Hunan Agricultural University,Changsha 410128,PRC;State Key Laboratory of Hybrid Rice/Hunan Hybrid Rice Research Center,Changsha 410125,PRC)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]湖南杂交水稻研究中心,杂交水稻国家重点实验室,湖南长沙410125

出　　处：《湖南农业科学》2021年第4期47-49,55,共4页Hunan Agricultural Sciences

基　　金：国家自然科学基金(31701375);国家重点研发计划(2017YFD0301501,2018YFD0301004)。

摘　　要：为了明确不同产量水平超级杂交稻抗倒伏特性,以3个不同产量水平超级杂交稻品种为材料,研究了株高、穗长、节间配置,基部3个节间至穗顶的高度及其鲜重,基部3个节间的抗折力、倒伏指数、含鞘茎粗、包茎叶鞘厚度、茎秆壁厚、单位长度干重等抗倒伏相关指标的差异。结果表明:超级杂交稻具有与其产量相协调的抗倒支撑特性,产量最高的品种抗倒伏特性表现为节间至穗顶的高度小、鲜重大、抗折力强、倒伏指数小,株高适中、基部3个节间总长占株高比例小、穗下节间长占株高比例大、节间配置合理,基部3个节间粗、厚、单位长度干重大。In order to clarify the lodging resistance characteristics of super hybrid rice,three super hybrid rice varieties with different yield levels were selected as materials for the study of plant height,panicle length,internode configuration,their respective height,fresh weight,bending resistance and lodging index from the 1st-3rd basal internode to the top of panicle,and stem diameter with sheath,sheath thickness,stem wall thickness and dry weight per unit length of three basal internodes.The results showed that super hybrid rice had the lodging resistance and support characteristics in coordination with its yield.The lodging resistance characteristics of the varieties with the highest yield were characterized by short height from basal internode to panicle top,heavy fresh weight,strong bending resistance,small lodging index,and moderate plant height;meanwhile,with a reasonable internode configuration,the total length of the three basal internodes accounted for a small proportion of plant height,whereas the internode length under the panicle accounted for a large proportion of plant height;furthermore,the three basal internodes had thick stem wall,wide stem diameter,and heavy dry weight per unit length.

关 键 词：超级杂交稻 产量水平 品种 株型 抗倒伏特性 

分 类 号：S311[农业科学—作物栽培与耕作技术]