摘要
<正>利用不同栽植代数杉木人工林根际土、非根际土及杉木各器官浸提液进行杉木种子发芽试验 ,研究杉木人工林自毒作用 ,研究结果表明 :杉木林根际土及非根际土中均存在抑制杉木种子萌发的物质 ,随栽植代数增加抑制作用更趋明显 ;杉木各器官浸提液对杉木种子萌发也有抑制作用 ,其中以杉木叶的抑制作用最为明显 ,杉木林下常见植物对杉木种子发芽则表现为低促高抑效应 ,说明杉木人工林存在自毒作用 ,这可能是杉木连栽障碍的原因之一。
Abstract
Theself poisoningeffectsofChinesefirplantationarestudiedthroughtheseedgerminationexperiment withtheextractsoforgans ,bulksoilsandrhizospheresoilofdifferentrotationplantations .Theresultsareasfollows: therearesomepoisonoussubstancesinhibitinggerminationofChinesefirseedsinsoilsofChinesefirplantations. Theinhibitingeffectbecomesstrongerandstrongerwithincreaseofplantinggenerations.Extractsfromtheorgansof Chinesefirtreesalsohavesomeinhibitingeffectsonseed’sgermination ,buttheeffectofleafisthestrongest.Lower concentrationextractsofundergroundvegetationmaybefavorabletotheseed’sgerminationwhereasthehighercon centrationwillreversetheresults.Itindicatesthatthe“self poisoning”effectsofChinesefirplantationsmightbeone ofthereasonsforpoornaturalregenerationandsoildegradationofChinesefirplantation.
马祥庆;刘爱琴;黄宝龙.
杉木人工林自毒作用研究[J]. 南京林业大学学报（自然科学版）. 2000, 24(01): 12-16 https://doi.org/10.3969/j.jssn.1000-2006.2000.01.004
MaXiangqing LiuAiqin HuangBaolong (FujianForestryCollege Nanping 3530 0 1).
AStudyonSelf poisoningEffectsofChineseFirPlantation[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2000, 24(01): 12-16 https://doi.org/10.3969/j.jssn.1000-2006.2000.01.004
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