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时间:2020-06-20
《施肥措施对玉米冠层结构及叶片水分利用效率的影响.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、江苏农业学报(JiangsuofAgr.Sci.),2013,29(6):1254~12591254http://www.jsnyxb.eom金友前,郜红建,杜保见,等.施肥措施对玉米冠层结构及叶片水分利用效率的影响[J].江苏农业学报,2013,29(6):1254—1259doi:10.3969/j.issn.1000dddO.2013.06.012施肥措施对玉米冠层结构及叶片水分利用效率的影响金友前,郜红建,杜保见,常江,章力干(安徽农业大学资源与环境学院,安徽合肥230036)摘要:为研究不同施肥措施对玉米冠层结构及叶片水分利用效率的影响,采用田间试验的方法设置了不施肥对照(CK)
2、、测土配方施肥(PF)、秸秆还田+测土配方施肥(PF+JG)3个试验处理。结果表明,秸秆还田+测土配方肥配施处理(PF+JG)使玉米大喇叭口期叶面积指数(4.22)分别较CK和PF处理显著提高103.35%和27.56%(P3、少12.86%。秸秆还田+测土配方施肥处理的叶片水分利用效率比CK和PF处理分别提高47.77%和30.83%,干物质积累量分别是CK和PF处理的3.28倍和1.75倍。由此可见,秸秆还田+测土配方施肥处理改善了玉米冠层结构,促进了光合作用及干物质积累,提高了叶片水分利用效率,为玉米高产创造了条件。关键词:施肥措施;冠层结构;光合特性;叶片水分利用;玉米中图分类号:$513.01文献标识码:A文章编号:1000ddd9(2013)06—1254-06Influencesoffertilizationmeasuresonmaizecanopystructureandleafwa-teruse4、eficiencyJINYou-qian,GAOHong—jian,DUBao—jian,CHANGJiang,ZHANGLi—gan(SchoolofResourcesandEnvironment,AnhuiAgriculturalUniversity,Hefei230036,China)Abstract:Inordertoinvestigateimpactofdifferentfertilizationpracticesonmaizecanopystructureandlearwateruseeficiency,twofertilizationsmeasures,thesoiltest5、ingandfertilizationrecommendation(PF)aswellasthestrawretur—ningplussoiltestingandfertilizationrecommendation(PF+JG)werecarriedoutinthefieldin2010.ResultsrevealedthatthemaizeleafareaindexinthePF+JGtreatment(4.22)atflareopeningstage(12一leafexpansion)was103.35%and27.56%higherthanthoseinCK(nofertilize6、r)andPFtreatment,theplantheight(100.2am)was15.84%higherthanthatinPFtreatment,whiletheleaforientationvalue(LOV)inPF+JGtreatmentwas7.05%and5.60%lessthanthatinCKandPFtreatment,respectively.Themaizeleafphotosyntheticrate[P,27.89moL/(m·s)],transpirationrate[Tr,2.68mo(m·s)],stomatalconductance[0.29mol/(7、m·s)]inPF+JGtreatmentwereincreasedby40.25%,6.11%and12.41%,comparedtothoseinPFtreatment,respectively.However,theleafintercellularCO2con一centration(Ci)inPF+JGtreatmentwas12.86%lower收稿日期:2013-05-08thanthatinPFtreatm
3、少12.86%。秸秆还田+测土配方施肥处理的叶片水分利用效率比CK和PF处理分别提高47.77%和30.83%,干物质积累量分别是CK和PF处理的3.28倍和1.75倍。由此可见,秸秆还田+测土配方施肥处理改善了玉米冠层结构,促进了光合作用及干物质积累,提高了叶片水分利用效率,为玉米高产创造了条件。关键词:施肥措施;冠层结构;光合特性;叶片水分利用;玉米中图分类号:$513.01文献标识码:A文章编号:1000ddd9(2013)06—1254-06Influencesoffertilizationmeasuresonmaizecanopystructureandleafwa-teruse
4、eficiencyJINYou-qian,GAOHong—jian,DUBao—jian,CHANGJiang,ZHANGLi—gan(SchoolofResourcesandEnvironment,AnhuiAgriculturalUniversity,Hefei230036,China)Abstract:Inordertoinvestigateimpactofdifferentfertilizationpracticesonmaizecanopystructureandlearwateruseeficiency,twofertilizationsmeasures,thesoiltest
5、ingandfertilizationrecommendation(PF)aswellasthestrawretur—ningplussoiltestingandfertilizationrecommendation(PF+JG)werecarriedoutinthefieldin2010.ResultsrevealedthatthemaizeleafareaindexinthePF+JGtreatment(4.22)atflareopeningstage(12一leafexpansion)was103.35%and27.56%higherthanthoseinCK(nofertilize
6、r)andPFtreatment,theplantheight(100.2am)was15.84%higherthanthatinPFtreatment,whiletheleaforientationvalue(LOV)inPF+JGtreatmentwas7.05%and5.60%lessthanthatinCKandPFtreatment,respectively.Themaizeleafphotosyntheticrate[P,27.89moL/(m·s)],transpirationrate[Tr,2.68mo(m·s)],stomatalconductance[0.29mol/(
7、m·s)]inPF+JGtreatmentwereincreasedby40.25%,6.11%and12.41%,comparedtothoseinPFtreatment,respectively.However,theleafintercellularCO2con一centration(Ci)inPF+JGtreatmentwas12.86%lower收稿日期:2013-05-08thanthatinPFtreatm
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