干旱胁迫及接种AMF对香樟幼苗生长的影响OA
Effects of Drought Stress and AMF Inoculation on the Growth of Camphor Seedlings
本研究以岳池县香樟幼苗为对象,通过设置正常供水、中度干旱(50％～55％田间持水量)、重度干旱(30％～35％田间持水量)及结合丛枝菌根真菌(AMF)接种的试验处理,探究了不同干旱程度对香樟幼苗生长的影响.结果表明,干旱胁迫显著抑制了香樟幼苗的苗高、地茎、总叶面积及生物量积累,且抑制程度随干旱强度加剧而增强.AMF接种有效缓解了干旱的负面影响,提高了幼苗的总生物量及光合能力,重度干旱条件下,AMF接种使幼苗总生物量提高32.6％,光合能力显著恢复.本研究揭示了香樟幼苗的耐旱规律及AMF的抗旱促进作用,为提升香樟在干旱地区的栽培成活率提供了科学依据.
This study investigated the effects of drought severity on Camphor tree seedling growth u-sing seedlings from Yuechi County.Experimental treatments included normal water supply,moderate drought(50％-55％field water retention),severe drought(30％-35％field water retention),and AMF inoculation.Results demonstrated that drought stress significantly inhibited seedling height,rhizome develop-ment,total leaf area,and biomass accumulation,with the inhibitory effect increasing as drought intensity in-tensified.AMF inoculation effectively mitigated drought-induced stress,enhancing total biomass and photo-synthetic capacity.Under severe drought conditions,AMF inoculation increased total biomass by 32.6％and significantly restored photosynthetic capacity.The study elucidated the drought tolerance mechanisms of Camphor seedlings and the drought-promoting role of AMF,providing scientific evidence for improving cul-tivation survival rates in arid regions.
任清胜
四川省广安市岳池县林业保护和发展中心 四川广安 638300
农业科技
干旱胁迫香樟幼苗生物量分配
drought stresscamphor seedlingsbiomass allocation
《热带农业工程》 2026 (3)
142-145,4
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