| 紧凑型玉米新杂交种群体结构特点和变化动态 |
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| 引用本文： | 王庆成,刘开昌,张秀清,王春英,张海林.紧凑型玉米新杂交种群体结构特点和变化动态[J].山东农业科学,1998(5). |
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| 作者姓名： | 王庆成 刘开昌 张秀清 王春英 张海林 |
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| 摘 要： | 对５个密度处理的两个紧凑型新杂交种的群体结构做了系统研究，结果表明，品种间在各生育阶段的变化趋势一致。随着密度增加，群体干物质总量提高，叶片、茎鞘在干物质总量中的比例增加，果穗在干物质总量中的比例降低；叶片、茎鞘干重在植株中上部的分配增加，植株重心升高。另外，探讨了ＬＡＩ、ＬＡＤ、ＬＤＲ等生理指标和叶角度、叶向值、株高、穗位高等外部形态指标变化与玉米耐密性的关系，分析了产量分布及其随密度变异的原因，提出了紧凑型玉米高产栽培的合理群体指标。
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| 关 键 词： | 玉米 群体结构 产量 产量频率分布 |
Character and Dynamic Changes of Population Structure for New Compact Maize Hybrids |
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| Abstract: | The population structure of two new compact hybrids,Denghai 1 and LD961 arranged in five plant densities,were studied in detail.The results indicated that there was a similar trend of population structure change in the hybrids.With the population density increased,gross dry matter per square meter grew,the proportion of stem and sheath to total dry matter increased,but the ear part declined,the dry matter distributions of stem and sheath in middle to top parts of canopy increased and barycenter of plant wen... |
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| Keywords: | Maize ( Zea mays L ) population structure yield frequency distribution |
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