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时间:2020-05-22
《行距和行向对不同密度玉米群体田间小气候和产量的影响-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中国生态农业学报2013年8月第21卷第8期ChineseJournalofEco·Agriculture,Aug.2013,21(8):938—942DoI:l0.3724/SP.J.1011.2013.00938行距和行向对不同密度玉米群体田问小气候和产量的影响水余利刘正¨王波段海明孟凡进李秋月(安徽科技学院植物科学学院凤阳233100)摘要“浚单20”是目前我国种植面积较大的紧凑性高产玉米品种。为充分发挥该品种在安徽种植区域的高产潜力,开展了种植密度、行距和行向三者相配置的田问试验,在60000株.hm和67500株.hm两种种植密度下
2、,研究了不同行距和行向对“浚单2O”的田间小气候和玉米产量的影响。结果表明:随着行距增大,玉米群体内部的日均风速和日均光照强度逐渐增大,累计积温和日均相对湿度则呈下降趋势。在同一种植密度和行距条件下,东西行向种植比南北行向种植的玉米群体日均风速较大、日均光照强度较高、累计积温较低和日均相对湿度较小,且产量高。同一种植行向,不同种植密度和行距配置条件下,玉米产量差异达显著水平(P3、0582.5kg·hm-。通过研究阐明了行距、行向和密度三者不同配置所形成的田问小气候与玉米产量形成的关系,为提高“浚单20”在安徽省的种植水平提供指导。关键词浚单20玉米种植密度行距行向群体结构田问小气候产量中图分类号:s513文献标识码:A文章编号:1671—3990(2013)08.0938—05Effectsofdifferentcombinationsofplantingdensity,rowspacingandrowdirectiononfieldmicroclimaticconditionsandgrainyieldofmaiz4、eYULi,LIUZheng,WANGBo,DUANHai—Ming,MENGFan—Jin,LIQiu—Yue(CollegeofPlantSciences,AnhuiUniversityofScienceandTechnology,Fengyang233100,China)AbstractCornproductioniscriticalforfoodsecurityinChina.Thelackofcoordinationbetweencornvarietiesandcultiva—tiontechniqueshasoftenresult5、edinlowproduction.‘‘Xundan20”isacompactandhigh-yieldcornvarietywithlargeplantingarea.IthasbeenrecommendedasasuitablevarietyforcultivationinAnhuiProvincebyChina’sMinistryofAgriculture.Torealizethefullyieldpotentialof‘‘Xundan20”inAnhuiProvince,theefectsofdifferentconfiguratio6、nofplantingdensity,rowspacingandrowdirectiononfieldmicroclimaticconditionsandgrainyieldformationwerestudied.Theresultssuggestedthatincreasingmaizeplantrowspacingincreaseddailyaveragewindspeedandillumination.Alsoincreasingmaizeplantrowspacingdecreasedaccumulatedtemperaturean7、ddailyaveragerelativehumidity.Underthesamedensityandrowspacing,dailyaveragewindspeedandilluminationineast·-westplantingpatternswerehigherthanthoseinsouth·northplantingpat·-terns.However,accumulatedtemperatureanddailyaveragerelativehumidityshowedtheoppositetrendsfortheplanti8、ngpat—terndirections.Grainyieldofeast—westplantingpatternswashigherthanthatofsouth
3、0582.5kg·hm-。通过研究阐明了行距、行向和密度三者不同配置所形成的田问小气候与玉米产量形成的关系,为提高“浚单20”在安徽省的种植水平提供指导。关键词浚单20玉米种植密度行距行向群体结构田问小气候产量中图分类号:s513文献标识码:A文章编号:1671—3990(2013)08.0938—05Effectsofdifferentcombinationsofplantingdensity,rowspacingandrowdirectiononfieldmicroclimaticconditionsandgrainyieldofmaiz
4、eYULi,LIUZheng,WANGBo,DUANHai—Ming,MENGFan—Jin,LIQiu—Yue(CollegeofPlantSciences,AnhuiUniversityofScienceandTechnology,Fengyang233100,China)AbstractCornproductioniscriticalforfoodsecurityinChina.Thelackofcoordinationbetweencornvarietiesandcultiva—tiontechniqueshasoftenresult
5、edinlowproduction.‘‘Xundan20”isacompactandhigh-yieldcornvarietywithlargeplantingarea.IthasbeenrecommendedasasuitablevarietyforcultivationinAnhuiProvincebyChina’sMinistryofAgriculture.Torealizethefullyieldpotentialof‘‘Xundan20”inAnhuiProvince,theefectsofdifferentconfiguratio
6、nofplantingdensity,rowspacingandrowdirectiononfieldmicroclimaticconditionsandgrainyieldformationwerestudied.Theresultssuggestedthatincreasingmaizeplantrowspacingincreaseddailyaveragewindspeedandillumination.Alsoincreasingmaizeplantrowspacingdecreasedaccumulatedtemperaturean
7、ddailyaveragerelativehumidity.Underthesamedensityandrowspacing,dailyaveragewindspeedandilluminationineast·-westplantingpatternswerehigherthanthoseinsouth·northplantingpat·-terns.However,accumulatedtemperatureanddailyaveragerelativehumidityshowedtheoppositetrendsfortheplanti
8、ngpat—terndirections.Grainyieldofeast—westplantingpatternswashigherthanthatofsouth
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