基因型肥料互作下大豆群体的时空分布特征-论文.pdf

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1、第33卷第3期大豆科学V01．33No．32014正6月S0YBEANSCIENCEJun．2014基因型肥料互作下大豆群体的时空分布特征闫春娟，宋书宏，孙旭刚，王文斌(辽宁省农业科学院作物研究所，辽宁沈阳110161)摘要：田间条件下，探讨NPK肥对不同基因型大豆群体时空分布特征及产量的影响。结果表明：随着生育进程的推进，植株叶面积指数、地上部生物产量呈单峰曲线变化规律，叶面积指数峰值出现在出苗后的第8周；而辽豆14和辽豆21地上部生物产量峰值分别出现在出苗后的第l2周和第14周。NPK肥提高了叶面积指数平均值。随着植株的不断生长，相对生长

2、速率值变小。大豆茎主要分布于植株下部，叶片主要分布于中上部，叶柄、荚皮和籽粒主要分布于中间部位。植株冠层中部的叶绿素值高于上层和下层，辽豆21叶绿素平均值优于辽豆l4，但叶绿素总和却低于辽豆14，NPK肥提高了叶绿素平均值及总和。叶面积累计指数LAI与透光率倒数的对数In(Io／I)间呈显著正相关。基因型和肥料显著影响大豆产量，NPK肥提高了两品种的产量，但辽豆21产量提高得更多。NPK肥也提高了植株的株高、主茎节数、节间长度。无论何种供肥水平，辽豆14的产量显著高于辽豆21，且辽豆14的株高更低、节数更多、节间长度更短。关键词：时空分布特征

3、；大豆；基因型；肥料中图分类号：$565．1文献标识码：ADOI：10．11861／j．issn．1000-9841．2014．03．0340Temporal-spatialDistributionCharacteristicsofSoybean(GlycinemaxL．Merr．)UnderGenotype—fertilizerInteractionConditionYANChun-juan，SONGShu—hong，SUNXu-gang，WANGWen—bin(CropInstituteofLiaoningAcademyofAcultur

4、~Science，Shenyang110161，China)Abstract：ApplyingNPKfertilizerindifferentvarietiestoaffectthephysiologyandstructureofplantandinfluencethecapaci—tyofagroecosystemtocapturelightandconvertthatlightenergyintobiomass，ultimatelyaffectingproductivityandyieldinsoy—bean(GlycineL．Merr．

5、)．Theobjectiveofthisstudywastodetermineiffertilizersandgenotypeshaddirectandinteractiveeffectsontempora1．spatialdistributioncharacteristicsofsoybeangrowingunderfieldconditions．TheresultsshowedthatLAIandshootbiomassgraduallyinereasedandthendeclinedasasingle—peakcurvewiththeg

6、rowthanddevelopmentofsoybean．ThemaximumvalueofLAIappearedintheeighthweeksafteremergence：PeakpointsofshootbiomassinLiaodoul4andLi—aodou21occurredatthe12thandthe14thweeksafteremergence．respectively．NPKenhancedtheaveragevalueofLAIfortwovarieties．Relativegrowthrateofal1treatmen

7、tsstartedtodecreasewiththegrowthanddevelopmentofsoybean．Stemandleafwasmainlydistributedinthelowerpartofplantandthemiddleandupperpartofplant，respectively；petiole，podandseedofsoybeanaremainlydistributedinthemiddlepartofplant．Chlorophyllmetervaluesoftheuppercanopyandlowercanop

8、ywerelowerthanthatofthemiddlecanopy．AhhoughmeanvalneofleavesSPADinLiaodou21washigh