不同种植密度对玉米农艺性状和产量构成因素的影响

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关键词玉米；种植密度;农艺性状；产量中图分类号S513 文献标识码A文章编号 0517-6611（2026）07-0010-06doi：10.3969/j.issn.0517-6611.2026.07.

AbstractTocarifthetsofplantingdensityonagroomictritsndieldofdierenmaievarieties，ndtoestablishathoetcal foundationtchcalframeworkfordinensetolerantgplasmnuliars，tissdyivestigated5aiaier threeplantingensitistoevaluateteirartitsyieldomponents.Varianceanalysisdemonstratediglysignificantdifencs（ P< 0.01）amongvarieties，denities，theirinteractionsoyield.Asdensityincreased，plantheight，earheight，lodgingrate，stalk breakage rate exhibited marked increases （ P<0.01 ），while ear length，ear diameter，grain per row，grain per ear， 1OO-grain weight significantly decreased （ P<0.05 ）. Bare tip length barren stalk rate also showed upward trends. Among the tested densities， Chuan 99，Wen19-4583，Wen2O-1424achievedmaximumyieldsat6750plants/ha，whereasWendan236，Wendan777Wugu861 peakedat5Oplants.Tering9varetisdispladthegstdat6plants.Coeatioaalysisrevaldtatai per ear exhibited the strongest positive correlation with yield across all densities （ P<0.01 ），while also showing significant associations with grain per row，ear diameter，ear length，1O0-grain weight， plant height （ 0.01

KeywordsMaize;Planting density;Agronomic traits;Production

玉米作为云南省第一大粮食作物，是重要的粮、饲兼用作物[1-2]。（剩余6476字）