基质组合与密度对高海拔地区马铃薯原原种产量及经济效益的影响

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关键词：马铃薯（SolanumtuberosumL.）；原原种；基质；密度；产量；经济效益；高海拔地区

中图分类号：S532；S318 文献标识码：A

文章编号：0439-8114（2026）01-0017-05

DOI：10.14088/j.cnki.issn0439-8114.2026.01.004 开放科学（资源服务）标识码（OSID）：口

Effects of substrate combinations and planting density on yield and economic benefits of pre-basic seed potatoes in high altitude regions

QIChi-heng，ZENGYu-ting，XUJuan-ni，Nimazhuoga，ZHAO Guan （Vegetable Institute，Xizang Academyof Agriculturaland Animal HusbandrySciences，Lhasa 850o32，China）

Abstract：Substratecombinationandplantingdensityarethekeyfactorsafectingtheyieldandeconomicbenefitsofpre-asicsed potatoes（SolanumtuberosumL）.Tooptiizecultivationtechiquesandenhanceproductioneficiencytheefectsofdiferetubstratecombinationsandplantingdensitisonthyieldandeconomicbenefisofpre-basicseed potatoesinhigh-altituderegionswere studiedbyusingthetwo-factorrandomizedblockdesignwiththevirus-freesedlingsofthelate-maturing variety ZangnongshuNo.1 as materials.The results showed that among the substrate combinations，treatment A1（coconut coir： peat=2：1 ，volume ratio，similarlyhereinafter）producedthe highest numberof effctiveseedandthebest economic benefits.TreatmentA2（vermiculite ：peat=2：1 ） resultedinbeterplantgrowthraitsandthehighesttotalpre-basicsednumberandweight.Regardingdensitytreatments，thelowdensity treatment B3 （10 cmX5 cm） exhibited the best plant growth traits and the highest percentage of efective seeds.As planting densityincreased，tetotalumberofprebasicsdinreased，whilehumbeofftiesed，teftieseedratd nomicbenefitsdecreased.Acomprehensiveevaluationusing themembershipfunctionmethodidentifiedthecombinationsA2B3（ermiculite ： peat =2：1 ，density 10 cm×5cm），A1B3（coconut coir peat=2：1 ，density 10cm×5 cm），and A1B2（coconut coir： peat = 2：1，density 8 cmX5 cm） as viable options for pre-basic seed propagation of the Zangnongshu No.l variety.

KeyWords：potato（SolanumtuberosumL.）；pre-basicseed；substrate；density；yield；economicbenefit;highaltituderegions

马铃薯（SolanumtuberosumL.）是全球重要的粮食作物，也是西藏的主要经济作物[1]。（剩余6387字）