施氮量与留叶数对烤烟碳氮代谢及烟叶品质的影响

——以新品系HG2为例

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中图分类号：S143 文献标识码：A 文章编号：1006-060X（2025）09-0027-07

Abstract Atwo-factorrandomized block experiment was conducted with diferent nitrogen applicationrates （15o，180，and 210kg/hm2 ） andretaiedleafcounts （14，16，and18）inYouzu Village，ShashiTown，LiuyangCityin224 toexploretheefectsofnitrogen applicationrateandretaiedleafcountonthecarbon-nitrogen metabolismandleafqualityof thenewfue-curedtobaccoline HG2. Theresults indicatedthatnitrogenappicationratewasthemainfactoraffectingtheplantheight，stemcircumference，andmaximum leafwidth，whileretainedleafcounthadnosignificanteectontheagronomictraits.Theinteractionbetweennitrogenapplication rateandretainedleafcount was insignificant.Both factors significantlyinfluencedthecarbonandnitrogenmetabolismofHG2 plantsandthechemicalcompoentsinfue-curedtobacco.Moreoverthrnteractionsignificantlyfectedtheactivitisofitrate reductase and amylase in the leaves.The treatment with nitrogen applicationat 180kg/hm2 and16 retained leaves showed excellent agronomic traitsoaltsitioofarbonandirogenmetabolsm，ndapropratesugar-talaloidatioof teiddleaduper leavesaftercuring，tusrsultingiigqualitytobaccoleaves.Terefore，itisecommendedthattetechnicalmeasureofapplying 180kg/hm2 ofnitrogenandretaining16leavescouldbeadoptedasthereference standardfornitrogenapplicationandleafretention in the cultivation of HG2 in Liuyang.

Keywords：newfue-curedtobaccolineHG2;nitrogenaplicationrate;retaiedleafcount;carbonandnitrogenmetabolism;tobacc leaf quality

烟叶生产应以优质适产为目标，为了协调烟叶产量与质量的关系，实现烟叶经济效益最大化兼顾烟农和卷烟工业企业的效益[1-2]，常需采用栽培调控措施。（剩余8310字）