| 玉米茎秆抗倒伏的综合评价 |
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| 引用本文： | 袁志华,全林斯,赵祥雄,焦由宙.玉米茎秆抗倒伏的综合评价[J].河南科学,2002,20(5):495-497. |
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| 作者姓名： | 袁志华 全林斯 赵祥雄 焦由宙 |
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| 作者单位： | 河南农业大学机电工程学院,河南,郑州,450002 |
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| 摘 要： | 建立了玉米茎秆的力学模型 ,利用力学理论和方法 ,给出了玉米茎秆临界力的具体表达式。根据此表达式 ,可对玉米茎秆的抗倒伏能力进行综合评价 ,临界力越大 ,抗倒伏能力越强。对于同一种玉米品种 ,种植密度不同 ,或肥力不同 ,其抗倒伏能力不同 ,茎秆系数越小 ,抗倒伏能力越强。文中给出了玉米倒伏与茎秆各物理量之间的关系 ,为玉米抗倒品种的选育以及超高产育种提供了理论依据
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| 关 键 词： | 玉米 抗倒伏 临界力 茎秆系数 |
| 文章编号： | 1004-3918(2002)04-0495-03 |
| 修稿时间： | 2002年6月20日 |
The total evaluation on maize lodging resistance |
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| YUAN Zhi hua,QUAN Lin shi,ZHAO Xiang xiong,JIAO You zhou.The total evaluation on maize lodging resistance[J].Henan Science,2002,20(5):495-497. |
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| Authors: | YUAN Zhi hua QUAN Lin shi ZHAO Xiang xiong JIAO You zhou |
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| Abstract: | A dynamic model for maize stem is established,a formula about critical force of maize stem is extracted by using dynamic theory and method. According to this formula, we can get a total evaluation about maize stem lodging resistance, and come to the conclusion that the bigger the critical force is, the stronger the maize stem lodging resistance is. In the same kind crop, if planting density or fertility of soil is different, the lodger resistance is different also. The smaller the value of stem coefficient is, the stronger the maize stem lodging resistance is. The relation is inferred between maize stem lodger and physics quantity of maize stem. The theoretical basis is provided for choosing and breeding variety. |
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| Keywords: | maize lodger critical force stem coefficient |
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