寒旱环境柠条锦鸡儿根系的力学群根效应  

Mechanical Multiple Root Effects of Caragana korshinskii Roots in Frigid and Arid-semiarid Environment

作　　者：张兴玲[1] 胡夏嵩[2] 

机构地区：[1]青海大学水利电力学院,西宁810016 [2]青海大学地质工程系,西宁810016

出　　处：《湖北农业科学》2014年第19期4632-4637,共6页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目"寒旱环境植物护坡力学机理与护坡效应研究"(40762002);青海省重点科技攻关项目(2003-N-134);长安大学西部矿产资源与地质工程教育部重点实验室开放基金项目(CHD2011SY016)

摘　　要：对试验区柠条锦鸡儿根系进行群根拉伸试验。结果表明,在相同的根径下,不论根系数量的多少,根系的抗拉力和抗拉强度具有随长度的增长而递减的趋势,且其递减的幅度较小;不论根长和根径如何变化,随根系数量的增加抗拉力均有较大幅度的提高。The multiple roots tensile tests of Caragana korshinskii were carried out in the testing areas.Results showed that when the C.korshinskii had the same root diameter,whether root quantity was more or less,the root tensile resistance and root tensile strength decreased with increase of root length,and the decreasing extent was lower.Whether root diameter and root length changed or not,the root tensile resistance increased greatly with increase of root quantity.

关 键 词：柠条锦鸡儿 根系 拉伸试验 群根效应 寒旱环境 

分 类 号：Q949.751.9[生物学—植物学] S157.2[农业科学—土壤学]