聚谷氨酸和海藻精对烤烟早期生长的影响

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引用格式：，等.聚谷氨酸和海藻精对烤烟早期生长的影响[J].湖南农业科学，2025（12）：49-54

DOI：10.16498/j.cnki.hnnykx.2025.012.009

中图分类号：S572 文献标识码：A 文章编号：1006-060X（2025）12-0049-06

Effects of Seaweed Extract and Poly-y-Glutamic Acid on Early Growth of Flue-Cured Tobacco

HU Wei1，XU Zhi-jun²，HE Xin-xi²，SUNGeng³，NIE San-an1，WANG Dong （1.ColegeofsocesnricuralUsitysh5;2acondustrald Changsha 410o19，PRC; 3. Hunan InstituteofAgricultural Soil andEco-Environment，Changsha 41025，PRC）

Abstract： To investigate the effects of seaweed extract （SE） and poly- ⋅γ -glutamic acid （PGA） on the early growth of flue-cured tobacco，ahydroponicexprimentwasconducted withdierentconcentrationsofSE，PGAandtheirixture.Theexpeintused Yunyan87'astetestvriety.eregulatoryeetsofSEandonterowthdevelopmentatioxidanteeactid physiologicalmetabolismoffue-uredtobaosedlings wereevaluatedTeresultssowedthateteatmentwithlowconcetration SE ×3000 dilution）significantly promoted the root growth and biomass accumulation，increased the chlorophyllcontent，and enhancedthephotosyntheticintensityofflue-cured tobaccoattheearlygrowth stage.Meanwhile，itsignificantly increasedthe peroxidase （POD），superoxide dismutase （SOD）andcatalase （CAT）activities ofeaves，thus enhancing the stressresistanceoffluecuredtobaccoattheearlygrowth stage.TheSE+PGAtreatmentshowed strongerrotvitalityandvaryingdegresof increass in photosyntheticeficiencyandantioxidantenzymeactivities.AlthoughSEdemonstratedobviousadvatages inboostingtobaccorowth andantioxidantcapacityGAdpotentialinireasingteetpotosthticateadeaningteantioidantcapacityefutue research willfocusonthecombinedefectofSEandPGonthestressresistanceofflue-curedtobacco，thus providingabasis for establishinganefficient tobaccocultivation system.

Keywords：flue-cured tobacco; poly-γ-glutamic acid; seaweed extract; early growth

烤烟是全球重要的经济作物，优质适产烟叶是烤烟生产的主要目标。（剩余9351字）