华北农学报 ›› 2011, Vol. 26 ›› Issue (3): 139-145. doi: 10.7668/hbnxb.2011.03.028

所属专题: 玉米

• 论文 • 上一篇    下一篇

局部化控夏玉米冠层结构、荧光特性及产量研究

边大红, 张瑞栋, 段留生, 李建民, 李召虎   

  1. 中国农业大学农学与生物技术学院农学系, 农业部农作制度开放实验室, 北京 100193
  • 收稿日期:2011-02-08 出版日期:2011-06-28
  • 通讯作者: 李建民(1958- ),男,江苏苏州人,教授,博士,主要从事农学、作物栽培学教学工作和作物生态生理、作物抗逆栽培、植物生长调节等研究工作。
  • 作者简介:边大红(1982- ),女,河北高阳人,在读博士,主要从事作物栽培生理研究.
  • 基金资助:
    国家科技支撑计划项目(2006BAD02A15);"863"计划项目(2006AA10A213)

Effects of Partial Spraying of Plant Growth Regulator on Canopy Structure, Chlorophyll Fluorescence Characteristic and Yield of Summer Maize (Zea mays L.)

BIAN Da-hong, ZHANG Rui-dong, DUAN Liu-sheng, LI Jian-min, LI Zhao-hu   

  1. College of Agronomy and Biotechnology,China Agricultural University,Key Laboratory of Farming System, Ministry of Agriculture,Beijing 100193,China
  • Received:2011-02-08 Published:2011-06-28

摘要: 以半紧凑型玉米品种金海5号为试验材料,在高、低两密度条件下,拔节期采用局部化控方式塑造玉米冠层,并研究了该冠层结构特征及对叶绿素荧光特性和产量的影响.结果表明:局部化控处理后化控部分植株变矮,穗下部节间变短(穗位下降)、穗上部节间变长、基部节间增粗,使玉米群体形成"波式"冠层的同时,群体LAI增大且持续时间较长,冠层中下部透光条件改善,使冠层内叶片保持较高叶绿素含量和PSⅡ潜在活性(Fv/Fo)及PSⅡ最大光化学效率(Fv/Fm),并使单位面积穗数和粒重增加,表现出比对照明显的增产效果.

关键词: 局部化控, ", 波式", 冠层, 叶面积指数, 透光率, 叶绿素荧光参数, 产量

Abstract: Canopy structure has strong effects on chlorophyll fluorescence characteristic and grain yield in maize(Zea mays L.) production.In this paper,the effects of partial spraying of plant growth regulator(PGR),which was sprayed at initial stage of stem elongation at intervals of three lines,were studied on canopy structure,chlorophyll fluorescence parameters and yield characters using a half-compact maize variety,Jinhai 5.The results showed that the plants sprayed PGR had lower plant heights,shorter lengths of internodes under ear,longer lengths of internodes above ear and thicker diameters of basal stems.Therefore,compared to the control plants,a′waving′ canopy was shaped in the treatment sprayed PGR partially.It is found that the ′waving′ canopy could obviously improve light permeating conditions in the middle and lower layers,increase leaf area index and hold longer duration,keep higher chlorophyll content,PS Ⅱ potential activity(Fv/Fo) and chloroplast PS Ⅱ photochemical efficiency,and result in an increase of ear number per area,100-grain weight and yield.

Key words: Partial spraying, 'Waving' canopy, Leaf area index, Percent transmission, Chlorophyll fluorescence parameters, Yield

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引用本文

边大红, 张瑞栋, 段留生, 李建民, 李召虎. 局部化控夏玉米冠层结构、荧光特性及产量研究[J]. 华北农学报, 2011, 26(3): 139-145. doi: 10.7668/hbnxb.2011.03.028.

BIAN Da-hong, ZHANG Rui-dong, DUAN Liu-sheng, LI Jian-min, LI Zhao-hu. Effects of Partial Spraying of Plant Growth Regulator on Canopy Structure, Chlorophyll Fluorescence Characteristic and Yield of Summer Maize (Zea mays L.)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(3): 139-145. doi: 10.7668/hbnxb.2011.03.028.

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