| 小麦茎杆抗倒伏的模型分析 |
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| 引用本文： | 于雪,张万琴,陆博,茹振刚. 小麦茎杆抗倒伏的模型分析[J]. 河南职业技术师范学院学报, 2013, 0(6): 33-36 |
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| 作者姓名： | 于雪 张万琴 陆博 茹振刚 |
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| 作者单位： | [1]新乡职业技术学院,河南新乡453006 [2]河南科技学院,河南新乡453003 |
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| 基金项目： | 国家科技支撑计划渊2011BAD07B02冤曰野973冶国家重点基础研究发展计划项目渊2012CB114300冤曰河南省科技攻关计划项目渊132102110120冤 |
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| 摘 要： | 对小麦茎秆进行受力分析,运用挠曲线近似方程的叠加,势能驻值原理,建立了茎秆在穗重和风载双重作用下茎秆抗倒伏的精确模型,并给出临界风力的具体表达式.结果表明：茎秆的高度越高,承载的临界力越小,但并不是简单的反比例关系;抗弯刚度与倒伏临界力成显著的正线性相关;单穗重的增加也会降低抗倒伏临界力.
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| 关 键 词： | 小麦茎秆 抗倒伏模型 挠度曲线 临界力 |
Model analysis for wheat stem lodging resistance |
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| Yu Xue,Zhang Wanqin,Lu Bo,Ru Zhengang. Model analysis for wheat stem lodging resistance[J]. Journal of Henan Vocation-Technical Teachers College, 2013, 0(6): 33-36 |
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| Authors: | Yu Xue Zhang Wanqin Lu Bo Ru Zhengang |
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| Affiliation: | 1.Xinxiang Vocational and Technical College,Xinxiang 453006,China; 2.Henan Institute of Science and Technology,Xinxiang 453003,China) |
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| Abstract: | Mathematical model for wheat stem lodging resistance is considered during its later growth period. Through the mechanical analysis of wheat stalk,by applying adding approximate equation of deflection curve and principle of resident potential energy,a accurate lodging resistance model under the ear weight and wind is established.Moreover,the formula of critical force is given.Results indicated that：relationship between wheat stem height and the critical force is not simple inverse proportion;there is a notable positive linear correlation between bending rigidity and critical force;single spike weight increased will also reduce the critical force of lodging resistance. |
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| Keywords: | wheat stem lodging resistance model deflection curve critical force |
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