基于主成分分析的黄柳插穗指标研究  

Study on Indexes of Salix gordejevii Cuttings Based on Principal Component Analysis in Hunshandake Sandy Land

作　　者：刘博 刘冠志 张瑞麟[3] 兰庆 刘果厚 LIU Bo;LIU Guan-zhi;ZHANG Rui-lin;LAN Qing;LIU Guo-hou(Inner Mongolia Natural Resources Protection and Utilization Research Center,Hohhot 010020,China;College of Grassland,Resources and Environment,Inner Mongolia Agricultural University,Hohhot 010019,China;Inner Mongolia Technical College of Mechanics and Electrics,Hohhot 010070,China)

机构地区：[1]内蒙古自治区自然资源保护与利用研究中心,内蒙古呼和浩特010020 [2]内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特010019 [3]内蒙古机电职业技术学院,内蒙古呼和浩特010070

出　　处：《内蒙古林业科技》2021年第4期31-36,41,共7页Journal of Inner Mongolia Forestry Science and Technology

基　　金：内蒙古自治区高等学校科学技术研究项目(NJZY21462);内蒙古农业大学高层次人才引进科研启动项目;内蒙古自治区自然科学基金项目(2021BS03023)。

摘　　要：对浑善达克沙地平缓沙地和风蚀坑的黄柳再生沙障生长状况进行调查研究,并利用主成分分析方法分析了黄柳再生沙障建植技术体系中插穗个体指标的适宜值。研究结果表明:平缓沙地和风蚀坑的插穗长度应不小于50 cm和65 cm,当年株高可达87.89 cm和78.38 cm;平缓沙地插穗栽植密度为10株·m^(-1)生长状况较好,当年株高可达87.89 cm,风蚀坑为10~13株·m^(-1)生长状况较好,当年株高可达76.78 cm;春季扦插的黄柳生长状况优于秋季,前者枝条长、基径、叶长、叶宽及地上生物量均大于后者;冬贮条优于现采条。黄柳插穗长度和栽植密度与立地类型显著相关,而插穗的采集时间与扦插时间主要决定因素为植物自身的生物学特性,与立地类型无显著相关。本研究为黄柳再生沙障建植技术体系的建立提供参考,并为浑善达克沙地的治理提供理论依据和实践指导。Based on the investigation and research on the growth status of Salix gordejevii regenerated sand barrier in flat sandy land and blowouts in Hunshandake Sandy Land,the appropriate value for individual factor of cuttings in the system of technology of establishing Salix gordejevii regenerated sand barrier was analyzed by use of principal component analysis.The results showed the current-year height could reach 87.89 cm and 78.38 cm with the cuttings length more than 50 cm and 65 cm in flat sandy land and blowout.In flat sandy land,the current-year height could reach 87.89 cm with planting density at 10 stocks·m^(-1).In blowouts,the current-year height could reach 76.78 cm with planting density at 10-13 stocks·m^(-1).Salix gordejevii with cutting in spring grew better than that in autumn,with branch length,diameter,leaf length,leaf width and aboveground biomass higher than those of the latter.The cuttings stored in winter were better than the fresh ones.There was significant correlation relation among cuttings length,planting density and site types,but the collecting and cutting time of cuttings were mainly determined by the biological characteristics of plants without correlation relation with site types.The research could provide references for establishing the technology system of Salix gordejevii regenerated sand barriers,and supply theoretical basis and practical guidance for controlling Hunshandake Sandy Land.

关 键 词：插穗 生长状况 再生沙障 黄柳 浑善达克沙地 

分 类 号：S288[农业科学—农业水土工程]