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1、安徽农业大学学报,2011,38(1):1-5JournalofAnhuiAgriculturalUniversity[DOI]CNKI:34－1162/S.20110107.1518.010氮肥运筹对机插杂交中籼水稻群体质量及产量形成的影响11,2313吴文革，张玉海，张健美，许有尊，何超波，4444李霞红，徐长斌，李福军，陈学英(1.安徽省农科院水稻所,合肥230031;2.安徽农业大学农学院,合肥230036;3.安徽省农机推广总站,合肥230061;4.天长市农业科技中心,天长239300)摘要：在实地机插田间小区试验(非人工模拟)条件下，比较研究了3种施氮水平组合2种穗肥比例共
2、6种氮-2肥运筹对杂交中籼水稻机插群体主要群体质量指标以及产量形成的影响。结果表明，210kg·hm的施氮量,配合基蘖肥∶穗肥为6∶4的运筹方式有利于群体茎蘖平缓消长，减小无效分蘖，提高成穗率，协调群个体矛盾，提高中、后期的叶面积指数和干物质积累，优化群体质量；同时有利于培育大穗，并稳定提高结实率和千粒重，协调产量构成因素而高产；是安徽江淮杂交中籼水稻机插丰产高效栽培的推荐施氮模式。关键词：杂交中籼水稻；机插栽培；氮肥；群体质量；产量中图分类号：S511.21文献标识码：A文章编号：1672−352X(2011)01−0001−05Effectsofnitrogenmanagemento
3、nmassqualityandyieldformationofmachinetransplantedmiddle-seasonIndicahybridrice11,2313WUWen-ge,ZHANGYu-hai,ZHANGJian-mei,XUYou-zun,HEChao-bo,4444LIXia-hong,XUChang-bin,LIFu-jun,CHENXue-ying(1.InstituteofRiceScience,AnhuiAgricultureAcademy,Hefei230031;2.SchoolofAgronomy,AnhuiAgriculturalUniversity
4、,Hefei230006;3.AnhuiAgriculturalMachineryTechnologyExtensionStation,Hefei230061;4.AgriculturalTechnologyServiceStationofTianchangcityofAnhuiProvince,Tianchang239300)Abstract:Asplitplotexperimentinthefieldswasconductedtostudytheeffectsofdifferentfertilizer-Nmanagementsonqualityindexofmachinetransp
5、lantedmiddle-seasonIndicahybridrice.Thenitrogenwasap--2pliedinthreelevelsandpaniclefertilizerwasintworatios.Theresultsshowedthattheschemeof210kg·hmNapplicationrateandtheratioofbasic-tilleringtopanicleandgrainfertilizerbeing6∶4washelpfulindecreasingthepopulationofstemsandtillersgently,decreasingth
6、enumberoftheinefficienttiller,increasingeffectivespikenumberperplant,andcoordinatingcontradictionbetweenindividualandpopulation.Moreover,itimprovedleafareaindex(LAI)，increasedtheaccumulationofdrymatterandoptimizedthepopulationqualityatthemiddleandlategrowthstage.Thisfertilizer-Nmanagementwasbenef
7、icialtocultivatebigspike,toenhanceseedsettingrateand1000-grainweighstably,toharmonizeyieldcomposingfactorsandthehighestgrainyield,whichwasthehighefficientcultivatedtechniqueofmachinetransplantedmiddle-seasonIndicahybri
