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种植密度对高产夏玉米登海661产量及干物质积累与分配的影响
引用本文:肖鑫辉,李向华,刘洋,张应,王克晶.种植密度对高产夏玉米登海661产量及干物质积累与分配的影响[J].作物学报,2011,37(7):1301-1307.
作者姓名:肖鑫辉  李向华  刘洋  张应  王克晶
作者单位:1.山东农业大学农学院/作物生物学国家重点实验室,山东泰安 271018;2山东登海种业股份有限公司,山东莱州 261448
基金项目:国家重点基础研究发展计划(973计划)项目,国家公益性行业(农业)科研专项,山东省玉米良种工程项目
摘    要:选用玉米品种登海661和农大108,设置不同种植密度,研究高产条件下种植密度对夏玉米产量及干物质积累与分配的影响。结果表明,种植密度增加后群体产量和干物质积累量显著增加,单株产量和干物质积累量反之。登海661在9万株 hm-2时充分发挥了生长潜能,可获高产。随种植密度的增加,开花期和乳熟期茎秆干物质积累量的降幅大于叶片,主要影响茎秆干物质积累;成熟期茎秆干物质积累量降幅小于叶片,主要影响叶片干物质积累。乳熟期以后茎秆和叶片的干物质输出率均随种植密度增加显著减少,茎秆的贡献率随种植密度增加显著减少,而叶片的贡献率,随种植密度增加显著增加。密度3~9万株 hm-2时茎秆对籽粒干物质积累量贡献率大,10.5~13.5万株 hm-2时叶片对籽粒库建成影响大。

关 键 词:  style="font-size:  9pt  font-family:  宋体  mso-ascii-font-family:  ''Times  New  Roman''  mso-hansi-font-family:  ''Times  New  高产夏玉米" target="_blank">Roman''">高产夏玉米  种植密度  产量  干物质积累与分配  lang="EN-US"  style="font-size:  9pt  mso-fareast-font-family:  " target="_blank">仿宋_GB2312">
收稿时间:2010-11-15

Effect of Plant Density on Grain Yield Dry Matter Accumulation and Partitioning in Summer Maize Cultivar Denghai 661
XIAO Xin-Hui,LI Xiang-Hua,LIU Yang,ZHANG Ying,WANG Ke-Jing.Effect of Plant Density on Grain Yield Dry Matter Accumulation and Partitioning in Summer Maize Cultivar Denghai 661[J].Acta Agronomica Sinica,2011,37(7):1301-1307.
Authors:XIAO Xin-Hui  LI Xiang-Hua  LIU Yang  ZHANG Ying  WANG Ke-Jing
Institution:LIU Wei1,ZHANG Ji-Wang1,*,Lü Peng1,YANG Jin-Sheng2,LIU Peng1,DONG Shu-Ting1,LI Deng-Hai2,and SUN Qing-Quan1,* 1 Agronomy College of Shandong Agricultural University /State Key Laboratory of Crop Biology,Tai'an 271018,China,2 Shandong Denghai Seed-Breeding Co.Ltd.,Laizhou 261448
Abstract:The effects of plant density on the dry matter accumulation and distribution were studied under high yield condition to provide a scientific basis for the cultivation and breeding of high-yielding maize.Summer maize cultivars Denghai 661 and Nongda 108 were used as the experimental material and planted with different planting densities.The results showed that,population grain yield and dry matter accumulation increased significantly with the increasing of plant density,while the per plant were decreased.Den...
Keywords:High-yield summer maize  Plant density  Grain yield  Dry matter accumulation and partitioning  
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