广西林业科学2025，Vol.54Issue(1)：35-43,9.DOI:10.19692/j.issn.1006-1126.20250105
播种环境对闽楠种子萌发和幼苗生长的影响
Effects of Different Sowing Environments on Seed Germination and Seedling Growth of Phoebe bournei
摘要
Abstract
Phoebe bournei is key protected wild plant endemic to China.Study on effects of different sowing en-vironments on seed germination and seedling growth of P.bournei had great significance for promoting natural regeneration of P.bournei populations.Taking P.bournei seeds as materials,by analytic factorial experimental design,sowing experiment was set up including 5 factors[crown canopy(G),covering mesh(Pr),covering soil(E),litter(L)and soil microorganism(P)]and 2 levels with total of 32 treatment combinations.Seed germination,seedling survival,seedling ground diameter and seedling height were analyzed,and environmental factors im-pacting seed germination and seedling growth of P.bournei were explored.Results showed that there were sig-nificant differences in seed germination rate,seedling establishment rate of seeds,seedling survival rate,seed-ling ground diameter and seedling height among different sowing treatment combinations.Seed germinations and seedling growths in treatments of crown canopy(G1),covering mesh protection(Pr1)or covering soil(E1)were better than those in treatments of non-crown canopy(G0),no covering mesh protection(Pr0)or no covering soil(E0)in total.Optimal treatment combination for seed germination was non-crown canopy-covering mesh protection-covering soil-covering litter-no sterilization(G0Pr1E1L1P0),in which maximum number of seed ger-mination was 31,seed germination rate was 60.67%,and seedling establishment rate of seeds was 58.00% .Op-timal treatment combination for seedling growth was crown canopy-covering mesh protection-covering soil-cov-ering litter-no sterilization(G1Pr1E1L1P0),in which seedling survival rate was 98.85%,ground diameter was 2.74 mm,and seedling height was 23.60 cm.Effects of environmental factors on seed germination and seedling growth were ranked as covering soil>crown canopy>covering mesh>litter>soil microorganism.Covering soil had the greastest effect on seed germination,and crown canopy had the greastest effect on seedling growth.Low seed germination rate and high seedling mortality rate in P.bournei natural regeneration were mainly caused by seeds and seedlings growed in non-crown canopy and exposed on grounds and animals feed.关键词
环境因子/种子萌发/幼苗生长/闽楠Key words
environmental factor/seed germination/seedling growth/Phoebe bournei分类
农业科技引用本文复制引用
姜冬冬,林建勇,李娟,何应会,欧汉彪,唐复呈,何应明..播种环境对闽楠种子萌发和幼苗生长的影响[J].广西林业科学,2025,54(1):35-43,9.基金项目
广西自然科学基金项目(2021GXNSFAA220025,2016GXNSFBA380032) （2021GXNSFAA220025,2016GXNSFBA380032）
广西科技计划项目(桂科AB17292066) （桂科AB17292066）
