西南麦区不同小麦品种（系）氮效率利用评价
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关键词：小麦（TriticumaestivumL.）；氮效率类型；产量；农艺性状；西南麦区中图分类号：S512.1 文献标识码：A文章编号：0439-8114（2025）07-0010-05DOI：10.14088/j.cnki.issn0439-8114.2025.07.003开放科学（资源服务）标识码（OSID）：
Evaluation of nitrogen efficient utilization of different wheat varieties（lines）in SouthwestWheatRegion
QIAO Xiang-mei，WANG Zhi-long1，LIULie'，CHENG Jia-sheng'，HUANG Ting-zhi’，CHENG Geng'， LIHong-yan²，XIAYan-bo³，WANG Zhi-weil
（1.Institutefodos，naefluraliesYnachtioalatIrovntCteug， China;2.Yimen County Planting Industry Development Service Center，Yimen 6511oo，Yunnan，China; 3.Yunnan Seed Management Station，Kunming 650o31，China）
Abstract：Afieldexperimentwasconducted tostudythediferencesofmainagronomictraits，yieldand SPADvalueof36wheat （TriticumaestumL.）varieties（lines）fromSouthwestWheatRegionundertwonitrogenlevelsofnonitrogenapplication（No）and normal nitrogen application （N1，pure nitrogen application rate of 135kg/hm2 ），in order to provide reference for nitrogen-efficient wheatbreding.Basedonthegrainyield，thevarieties（lines）weredividedintothreetypes：highyieldtype，middleyieldtypeand lowyieldtype.Theaverage yieldofhigh yield typewas 7334.60kg/hm2 ，which was1.70 times thatof lowyield type and1.27 times thatofthemidleyieldtype.Basedonyielddiferencsundertwonitrogenapplicationlevels，thewheatvareties（lines）werelssifiedintofourcategies：ual-ficnttye，low-fcienttyp，ig-fcientye，anddualineficnttye.Aogth 10varieties（lines）weredualefcienttpe，6varieties（lines）werehig--icienttype，7varieties（lines）werelow-Nfcint type，andl3varieties（lines）weredual-neffcientype.Teaverageyieldshowedsignificantdiferencesamongtefourtrogfficiencytypes，followingteoderofual-eficienttype，ig-ficenttye，ow-Nfiienttyeanddual-ieffienttefro hightolow.However，nosignificantdiferences wereobservedinspikeletnumber，leaf length，spikelength，andplantheightamong thesefourtypes.Yunmai83，Yunmai80，Chuanmai1648，Yunmai56，Chuanmai84，andYunmai68werenotonlydual-N-fficiencyvarieties（lines），butalsohighyieldvarieties（lines）.Consequently，thesevarietiescouldserveasnitrogen-effcientwheat germplasm resources for breeding applications.
Key words：wheat（TriticumaestiumL.）；nitrogen eficiency type；yield；agronomiccharacters；Southwest WheatRegion
随着全球人口增长，粮食需求日益增加，农作物生产的可持续性和效率成为农业研究的热点。（剩余7208字）