| 瞬时拉力下两个生长期4种植物单根抗拉力与抗拉强度的研究 |
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| 引用本文： | 苑淑娟,牛国权,刘静,张欣,邢会文,姚喜军. 瞬时拉力下两个生长期4种植物单根抗拉力与抗拉强度的研究[J]. 水土保持通报, 2009, 29(5): 21-25 |
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| 作者姓名： | 苑淑娟 牛国权 刘静 张欣 邢会文 姚喜军 |
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| 作者单位： | 苑淑娟,牛国权,刘静,邢会文,姚喜军,YUAN Shu-juan,NIU Guo-quan,LIU Jing,XING Hui-wen,YAO Xi-jun(内蒙古农业大学,内蒙古,呼和浩特,010018);张欣,ZHANG Xin(水利部牧区水利科学研究所,内蒙古,呼和浩特,010010) |
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| 基金项目： | 国家自然科学基金，水利厅科技项目 |
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| 摘 要： | 研究3～4年生柠条、沙柳、沙地柏和白沙蒿的单根(根径为0.3～3 mm)在两个生长时期内瞬时大风作用下的抗拉力和平均抗拉强度.结果表明,在生长季初期(5月初)和旺盛生长期(8月中旬),4种植物根系的单根抗拉力与直径均呈幂函数正相关关系;抗拉力和平均抗拉强度均表现为柠条＞沙柳＞沙地柏＞白沙蒿;沙柳、沙地柏、白沙蒿在生长季初期的抗拉力和平均抗拉强度大于旺盛生长期,柠条反之.
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| 关 键 词： | 植物根系 抗拉力 抗拉强度 |
| 收稿时间： | 2008-09-01 |
| 修稿时间： | 2009-03-25 |
Instantaneous Anti-tension and Tensile Strength of Single Root of Four Plant Species in Two Growth Periods |
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| YUAN Shu-juan,NIU Guo-quan,LIU Jing,ZHANG Xin,XING Hui-wen and YAO Xi-jun. Instantaneous Anti-tension and Tensile Strength of Single Root of Four Plant Species in Two Growth Periods[J]. Bulletin of Soil and Water Conservation, 2009, 29(5): 21-25 |
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| Authors: | YUAN Shu-juan NIU Guo-quan LIU Jing ZHANG Xin XING Hui-wen YAO Xi-jun |
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| Affiliation: | Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China;Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China;Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China;Institute of Water Resources of Pastoral Area, Ministry of Water Resources, Hohhot, Inner Mongolia 010010, China;Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China;Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China |
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| Abstract: | Anti-tension and tensilest rength of single root ( the diameter range of roots is between 0.3 and 3 mm) under momentary gale were determined. Plants studied were Caragana microp hylla Lam, Salix psammophila C. Wang et Ch. Y. Yang, Sabina vulgar is Ant., and Artemisia sphaerocephala Krasch., which were 3~ 4 years old. The function of momentary gale was simulated by instantaneous tension. Results show that in the early growth period ( early May) and the vigorous growth period ( mid-August), anti-tension of four kinds of single root shows a positive exponential relation to diameter. The plants, interms of anti-tension and average tensile streng th, are ranged in the order of Caraganami crop hylla Lam> Salixpsammop hila C. Wang et Ch. Y. Yang> Sabina vulgaris Ant.> Ar t emi sia sp haer ocep hala Krasch. Anti-tension and average tensile strength of single root in the early growth period is greater than that in the vigorous growth period except Caragana microphylay Lam. |
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| Keywords: | plant root anti-tension tensile strength |
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