广西林业科学2025，Vol.54Issue(3)：310-316,7.DOI:10.19692/j.issn.1006-1126.20250309
马尾松林下凋落物与土壤浸提液对木荷和枫香树种子萌发的化感作用
Allelopathic Effects of Pinus massoniana Litter and Soil Leachates on Seed Germination of Schima superba and Liquidambar formosana
摘要
Abstract
In order to investigate allelopathic effects of different material layers from Pinus massoniana stands on seed germination of Schima superba and Liquidambar formosana,and to provide theoretical supports for es-tablishments of mixed coniferous-broadleaved forests of P.massoniana,leachates(100 g/L)were prepared from un-decomposed litters,semi-decomposed litters and topsoils collected from P.massoniana stands at different ages(9-year-old,17-year-old,30-year-old,38-year-old and 56-year-old)by water extract method.Effects of different leachates on seed germination rates,germination potentials and germination indexes of S.superba and L.formosana were analyzed,and synthetical allelopathic effects of seed germination were analyzed.Results showed that there were no significant effects of un-decomposed litter leachates from P.massoniana stands at dif-ferent ages on all seed germination indicators of S.superba and L.formosana.In treatments of semi-decomposed litter leachates from P.massoniana stands at different ages,all seed germination indicators of S.superba showed significant differences and reduced with increase of P.massoniana age,and allelopathic effects converted from stimulation to inhibition.L.formosana seeds had higher tolerances for semi-decomposed litter leachates with no significant differences in germination rate and germination index.In treatments of soil leachates from P.masso-niana stands at different ages,all seed germination indicators of S.superba were the lowest in 17-year-old treat-ment,which were significantly lower than those in 30-year-old treatment,while L.formosana seeds showed no significant differences in germination rate and germination potential,with the lowest germination index in 38-year-old treatment.Synthetical allelopathic effect index showed that allelopathic effects of leachates from P.massoniana stands on seed germination of L.formosana were lower than those of S.superba in total.Semi-de-composed litter and soil leachates from 9-year-old P.massoniana stand enhanced seed germination of S.super-ba,and semi-decomposed litter and soil leachates from 30-year-old P.massoniana stand enhanced seed germi-nation of L.formosana.S.superba was more suitable for mixed planting in young P.massoniana stands,while L.formosana showed better adaptation in near-mature P.massoniana stands.关键词
浸提液/种子萌发/化感作用/马尾松Key words
leachate/seed germination/allelopathic effect/Pinus massoniana分类
农业科技引用本文复制引用
卜亚奎,李鹏,谭健晖,陈虎,曾敏,符韵林,杨章旗..马尾松林下凋落物与土壤浸提液对木荷和枫香树种子萌发的化感作用[J].广西林业科学,2025,54(3):310-316,7.基金项目
广西科技基地和人才专项(桂AD19254004) （桂AD19254004）
"十四五"国家重点研发计划项目子课题(2023YFF1304402-04) （2023YFF1304402-04）
广西自筹经费林业科技项目(桂林科研[2022ZC]第90号) （桂林科研[2022ZC]第90号）
八桂学者项目(2019A026) （2019A026）
