行距配置对夏玉米群体结构的影响  

Effects of Row Spacing on Population Structure of Summer Maize

作　　者：司纪升[1] 孟钰 张亚如 王旭清[1] 李升东[1] 孟维伟[1] 王娜 王洪滨 刘开昌[1] Si Jisheng;Meng Yu;Zhang Yaru;Wang Xuqing;Li Shengdong;Meng Weiwei;Wang Na;Wang Hongbin;Liu Kaichang(Crop Research Institute,Shandong Academy of Agricultural Sciences/National Engineering Laboratory of Wheat and Maize,Jinan 250100,China;Jinan Branch of Shandong Agricultural Radio and Television School,Jinan 250002,China)

机构地区：[1]山东省农业科学院作物研究所/小麦玉米国家工程实验室,山东济南250100 [2]山东省农业广播电视学校济南分校,山东济南250002

出　　处：《山东农业科学》2020年第10期67-70,共4页Shandong Agricultural Sciences

基　　金：国家重点研发计划项目(2017YFD0301000)。

摘　　要：为探索不同行距配置对夏玉米群体结构的影响,试验设置两个行距配置(R1:60 cm+60 cm;R2:70cm+50 cm),研究不同行距配置对玉米不同层次冠层光分布、叶面积指数、干物质量以及产量的影响。结果表明,R2模式提高了冠层透光率,显著增加了中层的光能截获率,比R1模式高出35.56%;R1、R2的叶面积指数无明显变化,但R2模式显著促进了穗部干物质积累;R2模式的产量显著高于R1模式,千粒重的增加是增产的主要原因。In order to explore the effects of different row spacing on population structure of summer maize,two row spacing configurations(R1:60 cm+60 cm,R2:70 cm+50 cm)were set to study the effects of different row spacing on canopy light distribution,leaf area index,dry matter quality and yield of maize.The results showed that R2 mode increased canopy light transmittance,and significantly increased light interception rate of middle layer,which was 35.56%higher than that of R1 model.The leaf area index of R1 and R2 had no obvious different,however,R2 mode significantly promoted dry matter accumulation in ear.The yield of R2 mode was significantly higher than that of R1 mode,and the increase of thousand grain weight was the main reason for yield increase.

关 键 词：行距配置 夏玉米 群体结构 

分 类 号：S513.047[农业科学—作物学]