[1]荆蓉,彭祚登*,李云,等. 刺槐林下枯落物浸提液对自身幼苗生长的化感效应[J].西北林学院学报,2023,38(4):27-33.[doi:10.3969/j.issn.1001-7461.2023.04.04]
 JING Rong,PENG Zuo-deng*,LI Yun,et al. Allelopathic Effects of the Extracts From Understory Litter of Robinia pseudoacacia on the Growth of Robinia Seedlings[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(4):27-33.[doi:10.3969/j.issn.1001-7461.2023.04.04]
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 刺槐林下枯落物浸提液对自身幼苗生长的化感效应()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第4期
页码:
27-33
栏目:
出版日期:
2023-07-31

文章信息/Info

Title:
 Allelopathic Effects of the Extracts From Understory Litter of Robinia pseudoacacia on the Growth of Robinia Seedlings
文章编号:
1001-7461(2023)04-0027-07
作者:
 荆蓉1彭祚登1*李云2王少明3
 (1.北京林业大学 林学院森林培育与保护教育部重点实验室,北京 100083;2.北京林业大学 生物与技术学院,北京 100083;3.河南省洛阳市国有洛宁县全宝山林场,河南 洛宁 471716)
Author(s):
 JING Rong1PENG Zuo-deng1*LI Yun2WANG Shao-ming3
 (1.The Key Laboratory for Silviculture and Conservation of Ministry of Education,School of Forestry,Beijing Forestry University,Beijing 100083,China; 2.School of Biological Sciences and Biotechnology,Beijing Forestry University,Beijing 100083,China;3.Quanbaoshan State-Owned Forest Farm of Luoning County,Luoning 471716,Henan,China)
关键词:
 刺槐枯落物幼苗生长化感作用
Keywords:
Robinia pseudoacacia litter seedling growth allelopathy
分类号:
S792.26
DOI:
10.3969/j.issn.1001-7461.2023.04.04
文献标志码:
A
摘要:
 探究刺槐不同林分的枯落物浸提液对刺槐自身幼苗生长的影响,旨在阐明刺槐林下实生苗更新困难问题。以刺槐幼苗为研究对象,采用盆栽与生物检测相结合的方法,分析刺槐一代幼龄林、一代中龄林、一代成熟林、二代幼龄林、二代中龄林、二代成熟林、三代幼龄林、三代中龄林、三代成熟林下枯落物浸提液对刺槐幼苗生长指标、叶绿素含量以及根系保护性酶活性的影响。研究结果显示,大部分刺槐林分下的枯落物浸提液对幼苗生长指标和根系保护性酶具有抑制作用,对叶绿素含量具有促进作用。在三代林中,随着刺槐年龄的增加枯落物浸提液对幼苗根系保护性酶的抑制作用呈增加趋势,化感综合效应指数从-0.049下降至-0.182;在中龄林和成熟林中,随着刺槐经营世代的增加其对幼苗生长指标以及根系保护性酶的抑制作用呈上升趋势。在一代和二代林中,随着刺槐年龄的增加枯落物浸提液对幼苗生长指标以及根系保护性酶的抑制作用呈下降趋势,幼苗生长化感综合效应指数的变化范围-0.095~0.067,根系保护性酶化感综合效应指数的变化范围-0.165~0.021。
Abstract:
 The objective of this study were to explore the allelopathic effects of the extracts of the litters collected from different Robinia pseudoacacia stands on the growth of Robinia seedlings to clarify the difficulty of seedling regeneration under the R.pseudoacacia forest.Taking the seedlings of R.pseudoacacia as the research objects,the pot experiment was carried out to analyze the effects of litter extracts on the growth index,chlorophyll and root protective enzyme activity of the seedlings under the first generation young forest,the first generation middle-aged forest,the first generation mature forest,the second generation young forest,the second generation middle-aged forest,the second generation mature forest,the third generation young forest,the third generation middle-aged forest and the third generation mature forest.Under most forest types,litter extracts had inhibitory effects on seedling growth indexes and root protective enzymes,and promoted chlorophyll content.In the third generation forest,with the increase of age,the inhibitory effect of litter extracts on protective enzyme of seedling root showed an increasing trend,synthetical effect of allelopathy (SE) decreased from -0.049 to -0.182.In the middle-aged forest and mature forest,the inhibitory effect to the seedling growth indices and protective enzymes of seedling roots increased with the increase of management generations,the variation range of SE of seedling morphology was -0.095 to 0.067,and the variation range of SE of root protective enzymes was -0.165 to 0.021.

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备注/Memo

备注/Memo:
 收稿日期:2022-06-10 修回日期:2022-09-07
基金项目:“十三五”国家重点研发计划(2017YF0600503)。
第一作者:荆蓉。研究方向:森林培育。E-mail:jingrong0221@163.com
*通信作者:彭祚登,教授。研究方向:森林培育,城市林业。E-mail:zuodeng@sina.com
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