文献类型：期刊文献

中文题名：四种植物生长旺盛期侧根分支处抗折特性研究

英文题名：Study on Breaking Resistance Characteristics of Four Kinds of Plants' Lateral Root Branch During the Vigorous Growth Period

作者：刘鹏飞[1] 刘静[1] 张格[2] 张欣[3] 朱宏慧[1] 李有芳[1]

第一作者：刘鹏飞

机构：[1]内蒙古农业大学生态环境学院;[2]中国林业科学研究院沙漠林业实验中心;[3]水利部牧区水利科学研究所

年份：2015

卷号：0

期号：17

起止页码：58-61

中文期刊名：北方园艺

外文期刊名：Northern Horticulture

收录：北大核心:【北大核心2014】；

基金：国家自然科学基金资助项目(51364034)

语种：中文

中文关键词：根;侧根分支处;抗折特性

外文关键词：roots; lateral root branch; breaking resistance characteristics

分类号：S793

摘要：以3~4年生生长旺盛期柠条、沙柳、沙棘、白沙蒿为研究对象,供试试验根均为由上级根通过侧根分支处分为2条下级根的根段,采用TY-8000伺服强力机测定4种植物侧根分支处的抗折力、抗折强度。结果表明：柠条、沙柳、沙棘、白沙蒿的侧根分支处均为试验根的薄弱部位,其抗折能力低于该部位之上的根段,也低于该部位之下的2条下级根;侧根分支处的抗折力与侧根分支处直径为幂函数正相关,抗折强度与直径为幂函数负相关,抗折强度的种间差异为：柠条（31.47±7.68）MPa〉沙柳（17.27±1.90）MPa〉沙棘（3.76±1.07）MPa〉白沙蒿（2.10±0.28）MPa。
At the vigorous growth period,with the 3-4year-old Caragana korshinskii,Salix psammophila,Hippophae rhamnoides and Artemisia sphaerocephala as the research objects,used the TianYuan-8000 test instrument to test the breaking resistance and the breaking strength of the four plants.The test roots both were that the upper straight root branched two lower straight roots through the lateral root branch.The results showed that the lateral root branch of four kinds of plants all were the weak part of test roots,and its breaking resistance was not as good as the upper straight root and the two lower straight roots.The breaking resistance and the diameter of lateral root branch were the positive correlation of power function,and the breaking strength and diameter were the negative correlation of power function.The breaking strength of the four kinds of plants compared：Caragana korshinskii（31.47±7.68）MPa〉 Salix psammophila（17.27±1.90）MPa〉Hippophae rhamnoides（3.76±1.07）MPa〉Artemisia sphaerocephala（2.10±0.28）MPa.