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| 高产玉米品种的产量结构特点及形成机制 | |
| 引用本文： | 柯福来,马兴林,黄瑞冬,王传海,徐安波.高产玉米品种的产量结构特点及形成机制[J].玉米科学,2010,18(2). |
| 作者姓名： | 柯福来 马兴林 黄瑞冬 王传海 徐安波 |
| 作者单位： | 1. 沈阳农业大学农学院,沈阳,110161;中国农业科学院作物科学研究所,北京,100081 2. 中国农业科学院作物科学研究所,北京,100081 3. 沈阳农业大学农学院,沈阳,110161 |
| 基金项目： | 国家粮食丰产科技工程课题 |
| 摘 要： | 以玉米杂交种先玉335、郑单958、吉单35为试材,在67500株/hm~2种植密度下,分析高产玉米品种产量结构特点及形成机制.结果表明:先玉335产量显著高于郑单958和吉单35.群体粒数多是玉米高产的关键,百粒重高是玉米高产的保证.受精花丝数多、败育粒数少、叶面积指数高且持续期长、子粒形成关键期干物质积累多、单粒干物质供应充足是玉米高产的生理基础.研究还发现,群体粒数和粒重的协调有赖于源库水平的协调. |
| 关 键 词： | 玉米 产量 产量构成因素 |
Characteristics of Yield Components and Formation Mechanism of High-yield Maize Hybrids |
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| Abstract: | Characteristics of yield components and formation mechanism of high-yield maize hybrids were stud-ied,using maize hybrids Jidan35, Zhengdan958 and Xianyu335 ,under planting density of 67 500 plants/ha.The re-suits showed that the yield of Xianyu335 was the highest.Population grain number was the main contributor to high yield, and high 100-grain weight was the guarantee for high yield.The physiological bases for high yield were more fertilized filaments/ear,few aborted kernels/ear, high leaf area indices (LAI), high leaf area duration (LAD), more dry matter production at the key stages of yield formation and more dry matter supply to kernels.More population grain number and high grain weight were dependent on the coordinated source-sink relationship. |
| Keywords: | Maize Yield Yield components |
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