文献类型：期刊文献

中文题名：容器规格和添加生物炭的基质配方对西南桦幼苗生长的影响

英文题名：Effects of container size and medium formula with biochar addition on the growth of Betula alnoides seedlings

作者：刘士玲[1,2] 贾宏炎[1,2] 陈琳[1,2] 杨保国[1,2] 雷丽群[1,2] 庞圣江[1,2] 张培[1,2]

第一作者：刘士玲

机构：[1]中国林业科学研究院热带林业实验中心,广西凭祥532600;[2]广西友谊关森林生态系统国家定位观测研究站,广西凭祥532600

年份：2019

卷号：0

期号：9

起止页码：2875-2882

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：“十三五”国家重点研发计划子课题“广西西南桦高效培育技术研究”(2016YFD0600604-01)资助

语种：中文

中文关键词：西南桦;生物炭;无性系;主成分分析;根系形态

外文关键词：Betula alnoides;biochar;clone;principal component analysis;root morphology

分类号：S792.15

摘要：为了揭示容器规格和添加生物炭的基质配方对西南桦(Betula alnoides)无性系幼苗生长的影响,以3个西南桦优良无性系(FB4、FB4+和FB01)作为研究对象,选用3种容器规格(4.5 cm×8.0 cm,6.0 cm×9.0 cm,8.0 cm×12.0 cm,直径×高)和6种基质配方(黄心土、沤制树皮、锯末、炭化树皮和竹炭不同比例)开展育苗试验,通过比较不同处理幼苗生长和根系形态等指标,结合育苗效果综合评价,确定适宜的容器规格和基质配方。结果表明:基质配方、容器规格、无性系均显著影响西南桦幼苗的地径、苗高、叶面积、叶片数、生物量和根系形态,且存在显著的交互效应。比较所有无性系在相同基质种类下不同基质比例之间的生长表现后发现:6个基质配方中,基质4表现出明显的生长优势,其地径、苗高、生物量、分枝数、叶面积、叶片数、根长、根表面积、根体积和根平均直径分别是其他基质配方的1.01~1.36、1.11~1. 62、1. 13~2. 94、1. 05~3. 94、1. 05~2. 86、1. 03~2. 44、1. 29~2.17、1. 29~2.20、1.32~2.44和1.00~1.60倍。所有无性系幼苗的地径、苗高、叶面积、叶片数、生物量和根系形态特征均随着容器规格的增大而增加,表明容器规格越大对幼苗生长的促进作用越明显。对西南桦幼苗的生长指标和根系形态指标进行主成分分析,筛选出叶面积、根表面积、根平均直径和存活率作为苗木质量综合评价指标,进一步计算综合评价指数发现,无性系FB4+、容器规格3(8.0 cm×12.0 cm)和基质4(74.625%黄心土+24.875%沤制树皮+0.5%竹炭)的综合评价指数最大(1.566),其育苗效果最好。
We examined the effects of container size and medium formula with biochar addition on the growth of Betula alnoides seedlings with three superior clones of B.alnoides(FB4,FB4+and FB01)grown under three container sizes(4.5 cm×8.0 cm,6.0 cm×9.0 cm,8.0 cm×12.0 cm,diameter and height)and six medium formulas(different ratios of yellow soil,composted bark,sawdust,charred bark and bamboo charcoal).The optimum container size and media formula were determined by comparing seedling growth and root morphology,with a comprehensive evaluation of seedling growth.The results showed that the media formula,container size,clone and their interactions had significant effects on root collar diameter,seedling height,leaf area,leaf number,biomass,and root morphology.When considering the growth performance of all clones among different media ratios under the same medium type,the optimal growth performance occurred in the medium 4,in which the root collar diameter,seedling height,biomass,branch number,leaf area,leaf number,root length,root surface area,root volume,average root diameter were 1.01-1.36,1.11-1.62,1.13-2.94,1.05-3.94,1.05-2.86,1.03-2.44,1.29-2.17,1.29-2.20,1.32-2.44 and 1.00-1.60 times higher than those of other media formulas,respectively.With the increases of container size,root collar diameter,seedling height,leaf area,leaf number,biomass and root morphological characteristics of all clone seedlings increased,indicating that larger container facilitated seedling growth.Principal component analysis was used to analyze the growth and root morphology indexes of B.alnoides seedlings,the results from which showed that the leaf area,root surface area,average root diameter and survival rate were comprehensive evaluation indices of seedling quality.After further calculation of the comprehensive evaluation index,the combination of clone FB4+,container size 3(8.0 cm×12.0 cm)and medium 4(74.625%yellow heart soil,24.875%bark,and 0.5%bamboo charcoal)showed the largest comprehensive evaluation index(1.566),exhibiting the strongest effects on seedling growth performance.