| 豆禾牧草刈割期茎秆抗弯特性试验研究 |
| |
| 引用本文： | 赵春花,曹致中.豆禾牧草刈割期茎秆抗弯特性试验研究[J].草原与草坪,2010,30(1):20-23. |
| |
| 作者姓名： | 赵春花 曹致中 |
| |
| 作者单位： | 1. 甘肃农业大学,草业学院,草业生态系统教育部重点实验室,中-美草地畜牧业可持续研究中心,甘肃,兰州,730070;甘肃农业大学,工学院,甘肃,兰州,730070
2. 甘肃农业大学,草业学院,草业生态系统教育部重点实验室,中-美草地畜牧业可持续研究中心,甘肃,兰州,730070 |
| |
| 基金项目： | 甘肃省科技支撑计划项目(0804GKCA051);;国家自然科学基金项目(50965001);;国家“十一五科技攻关重大专项子项(2006BAD04A04-1-9);;草业生态系统教育部省部共建重点实验室项目(CY-GG-2006-17)资助 |
| |
| 摘 要： | 以北方多年生豆科牧草甘农3号、匍匐型小冠花、直立型小冠花和禾本科牧草无芒雀麦、扁穗冰草刈割期茎秆为研究对象,利用微机控制电子万能材料试验机对刈割期的豆禾牧草底部茎秆进行弯曲试验,获得最大抗弯强度、弹性模量等机械物理特性参数,并且,分析牧草茎秆弯曲过程中应力-应变分布规律。结果表明:刈割期茎秆的弯曲弹性模量平均值分别为57.914,20.550,25.612,31.474,60.880 MPa,牧草的形态学性状与其抗弯特性紧密相关。此研究为牧草的机械化收获选择切割方式和切割刀具提供理论依据和技术参数,同时对牧草优种筛选和选育具有重要的指导意义。
|
| 关 键 词： | 豆禾牧草茎秆 弯曲试验 弹性模量 应力-应变曲线 |
Experiment on bending properties of stems of legume forage and grasses at harvesting period |
| |
| ZhAO Chun-hua,CAO Zhi-zhong.Experiment on bending properties of stems of legume forage and grasses at harvesting period[J].Grassland and Turf,2010,30(1):20-23. |
| |
| Authors: | ZhAO Chun-hua CAO Zhi-zhong |
| |
| Institution: | 1.Pratacultural College;Gansu Agricultural University;Key Laboratory of Grassland EcosystemMinistry of Education;China-U.S.Centers f or Grazingland Ecosystem Sustainability;2.Engineering college;Gansu AgriculturalUniversity;Lanzhou 730070;China |
| |
| Abstract: | Five kinds of stems in harvesting period of perennial legumes forage and grasses such as Medicago sativa Gannong No.3,creeping type crownvetch,Erect crownvetch strain,Bromus inermis Leyss and Agropyron cristatuml,were chosen to perform the experiments of bending test by means of electronic universal testing machine.The maximum of bending strength and elastic modulus of forage stems were determined,and the curve of bending tests stress-strain of forage stems had been analyzed.The results showed that in the f... |
| |
| Keywords: | stems of legume forage and grasses bending tests flexibility modulus curve of stress-strain |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
