基于力学模型的小麦腊熟期倒伏的风速研究

随着小麦产量的提高,其倒伏的可能性也增大。因此,解决小麦的倒伏问题对提高小麦产量具有重要意义。将腊熟期小麦茎秆简化为刚/弹性材料,研究了腊熟期小麦茎秆在风载作用下应力变化的基本规律,运用振动理论建立了小麦单茎穗重在风载作用下的抗倒伏力学模型。最后,利用2013年的试验数据,基于该模型计算出了周麦18茎秆和矮抗58茎秆的抗倒伏风速,计算结果与已有文献数据较吻合,表明该模型可为研究小麦的抗倒伏提供一定的理论依据。...

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Bibliographic Details
Published in广东农业科学 Vol. 41; no. 15; pp. 158 - 161
Main Author 张丽华 武捷春 包玉海 王春霞 徐锟
Format Journal Article
LanguageChinese
Published 内蒙古师范大学内蒙古自治区遥感与地理信息系统重点实验室,内蒙古呼和浩特010022 2014
北京师范大学水科学研究院,北京100875%内蒙古工业大学理学院,内蒙古呼和浩特,010051%内蒙古师范大学内蒙古自治区遥感与地理信息系统重点实验室,内蒙古呼和浩特,010022
Subjects
力学模型
小麦茎秆
抗倒伏风速
力学模型
抗倒伏风速
小麦茎秆
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ISSN1004-874X

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Summary:随着小麦产量的提高,其倒伏的可能性也增大。因此,解决小麦的倒伏问题对提高小麦产量具有重要意义。将腊熟期小麦茎秆简化为刚/弹性材料,研究了腊熟期小麦茎秆在风载作用下应力变化的基本规律,运用振动理论建立了小麦单茎穗重在风载作用下的抗倒伏力学模型。最后,利用2013年的试验数据,基于该模型计算出了周麦18茎秆和矮抗58茎秆的抗倒伏风速,计算结果与已有文献数据较吻合,表明该模型可为研究小麦的抗倒伏提供一定的理论依据。
Bibliography:44-1267/S
ZHANG Li-hua;WU Jie-chun;BAO Yu-hai;WANG Chun-xia;XU Kun; （1.Key Laboratory of Remote Sensing and Geographical Information System in Inner Mongolia Autonomous Region, Inner Mongolia Normal University, Hohhot 010022, China; 2.College of Water Science, Beijing Normal University, Beijing 100875, China; 3.College of Science, Inner Mongolia University of Technology, Hohhot 010051, China）
wheat stem;lodging resistance wind speed;mechanics model
With the increase of wheat yield,the possibility of wheat lodging increases.Therefore,solving the problem of wheat lodging resistance has great significance for the increase of wheat yield.Simplifying wheat stem at wax ripeness as rigid/elastic material,its basic law of stress under the wind load was studied.The lodging resistance mechanical model of deadweight of wheatear under the wind load was established by using vibration theory.Finally,based on this model,the lodging resistance wind speed of Zhoumai 18 and Aikang 58 were calculated by the experimental data in 20
ISSN:1004-874X