不同育苗基质对甘薯幼苗生长发育的影响

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图分类号：S531 文献标识码：A DOI编码：10.3969/j.issn.1006—6500.2025.06.0

Effect of Different Seedling Substrates on the Growth and Development of Sweet Potato Seedlings

DU Fanfan， ZHANG Xiaomei， HOU Wenbang

（HenanUniversityofScienceandTechnologyCollegeofAgriculture/SwetPotatoIndustryInstitute，Luoyang，Henan47Ohia） Abstract：Inordertopromotethedevelopmentofsweetpotatosedlingindustryandexploretheinfluenceofsubstrateonthegrowth ofswetpotatosedings.Tisstudyselectedcultiatedsoilandtwoommercialsedlingsubstratesastestmaterials，withstota tovarietyPushu3astheindicatorvarietyecomparativeexperimentofsedlingsubstratesasondutedinteligtcultiation roomofHenan UniversityofScienceandTechology.Theresultsshowedthattheseedlingefectsofthetwocommercialsubstrates wereoutstanding，withplantheight，stemdiameter，SPAD，freshweight，rootshotratio，andstrongseedlingindexincreasedby 37.81 % ， 3.84% ， 16.93% ，60.49 % ， 42.50% ，and 24.57% on average compared with cultivated soil.The nutrient content of the entire seedling plant significantly increased， with an average increase of 29 % ， 204% ，and 73% in nitrogen，phosphorus，and potassium contentcomparedtoeulivatedsoilorelatioanalysissowdtatteulkensitytotalporositywaterholdingpores，icatter，andtherindicatorsofthesubstrateweresignifcantlyoextremelysignficantlycoelatedwiththegrowthidicatorsofsweet potatoseedling.Inonlusioeorelatioaalysiseteeeicalndmicalprortsofdintsubstatadte growthindicatorsofseepotatosedingsshowedthat tebulkdensityporosity，waterholdingpres，rganicmater，andothpopertiesofsubstraeswererelatedtoseetpotatoseedlinggrowthindicatos.Thegrowthofsdlingsissgnificantlycoelatedandcan be used as a key factor in the selection of sweet potato seedling substrates.

Keywords：seedling substrate;sweet potato;seedling;growth and development

甘薯（IpomoeabatatasL.）作为旋花科无性繁殖作物，是全球重要的粮食作物之一，联合国粮食及农业组织（FAO）最新数据显示，截至2020年，全球甘薯的种植面积高达 8.00×106hm2 ，总产量达到 1.05× 108t ，亚洲甘薯总产量占全球产量的 62.56% ，中国是全球最大的甘薯生产国，种植面积仅次于水稻、小麦、玉米和马铃薯。（剩余7985字）