中南林业科技大学学报2025，Vol.45Issue(6)：22-30,9.DOI:10.14067/j.cnki.1673-923x.2025.06.003
石漠化区先锋植物及施肥对蒜头果直播造林的影响
Effects of pioneer plants and fertilization on Malania oleifera direct seeding in rock desertification region
摘要
Abstract
[Objective]This study employed a pot experiment to investigate the nurse effect of pioneer plants and their fertilizer treatments on the direct seeding of Malania oleifera.[Method]A pot experiment was conducted to study the germination,seedling growth,and leaf traits of M.oleifera seeds under different life forms of pioneer plants,including Apluda mutica,Neyraudia reynaudiana,Vitex negundo,and Delavaya toxocarpa,as well as under three fertilization treatments(no fertilization,10 g fertilization,and 20 g fertilization).[Result]The results showed that the four pioneer plants significantly reduced solar intensity and average temperature under the canopy in summer.However,the effects of pioneer plants on seed germination and survival rate of M.oleifera were not distinctly observed.The facilitation effect of the four pioneer plants on the height growth of M.oleifera seedlings decreased with increasing fertilization,while the inhibitory effect on basal diameter growth increased with increasing fertilization.V.negundo exhibited a significant facilitation effect on the height growth of M.oleifera seedlings across all fertilization treatments(P<0.05),whereas A.mutica,D.toxocarpa,and N.reynaudiana showed a significant inhibitory effect on the basal diameter growth of M.oleifera seedlings under all fertilization treatments.The SPAD value of leaves,average single leaf area,and specific leaf area of M.oleifera seedlings under pioneer plants were larger than those outside,with significant differences observed between under the effect of pioneer plants and the exterior,except for the average single leaf area under A.mutica.[Conclusion]V.negundo emerges as a favorable choice as a nurse plant in the direct seeding of M.oleifera,contributing to improved seedling growth and establishment.The results of this study will provide guidance for vegetation restoration and Malania oleifera afforestation in rocky desertification areas in southwest China.关键词
石漠化/保育作用/先锋植物/施肥处理/蒜头果Key words
rock desertification/nurse effect/pioneer plants/fertilizer treatment/Malania oleifera分类
农业科技引用本文复制引用
黄科朝,吕仕洪,黄甫昭,李象钦,周龙武,曾丹娟..石漠化区先锋植物及施肥对蒜头果直播造林的影响[J].中南林业科技大学学报,2025,45(6):22-30,9.基金项目
国家自然科学基金项目(32260319,31860174) （32260319,31860174）
广西植物研究所基本科研业务费项目(桂植业23006) （桂植业23006）
广西喀斯特植物保育与恢复生态学重点实验室自主课题(KZ2022-2,22-035-26). （KZ2022-2,22-035-26）
