| 小麦生育后期基部节间弯曲力学特性与氮、磷、钾含量的关系研究 |
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| 引用本文： | 袁志华,张均,贺德先,李英骏.小麦生育后期基部节间弯曲力学特性与氮、磷、钾含量的关系研究[J].河南农业大学学报,2010,44(2). |
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| 作者姓名： | 袁志华 张均 贺德先 李英骏 |
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| 作者单位： | 1. 河南农业大学,河南,郑州,450002
2. 中国矿业大学,北京,100083 |
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| 基金项目： | 国家粮食丰产科技工程河南课题，河南省自然科学基金 |
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| 摘 要： | 为分析小麦生育后期基部节间弯曲力学特性与氮磷钾含量的关系,测试了不同时期茎基部节间的抗弯刚度、弯曲强度、弹性模量、惯性矩等弯曲力学特性以及茎秆氮、磷、钾含量.结果表明,扬花期抗弯刚度最大,灌菜期弯曲强度最大.在一定范围内,氮含量越高,抗弯刚度越大;钾含量越高,弹性模量值越小;氮含量越高,惯性矩越大.
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| 关 键 词： | 小麦 茎秆 抗弯刚度 弯曲强度 氮 磷 钾 |
Relationship between stem bending properties and contents of N,P and K in late growing period in wheat |
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| YUAN Zhi-hua,ZHANG Jun,HE De-xian,LI Ying-jun.Relationship between stem bending properties and contents of N,P and K in late growing period in wheat[J].Journal of Henan Agricultural University,2010,44(2). |
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| Authors: | YUAN Zhi-hua ZHANG Jun HE De-xian LI Ying-jun |
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| Institution: | 1.Henan Agricultural University/a>;Zhengzhou 450002/a>;China/a>;2.China University of Mining and Technology/a>;Beijing 100083/a>;China |
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| Abstract: | Relationships between stem bending properties such as bending rigidity,bending strength,elastic modulus and moment of inertia and contents of nitrogen,phosphorus and potassium in late growing period in wheat were studied in this study.The results showed that value of bending rigidity was the maximum at anthesis.Value of bending strength was the maximum at grain-filling stage.The more nitrogen content wheat stem had,the bigger the flexural rigidity was.The more potassium content wheat stem had,the smaller th... |
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| Keywords: | wheat stem bending rigidity bending strength nitrogen phosphorus potassium |
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