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1、镁水稱合对寒地水稻产量构成因素及产量的影响摘要:在黑龙江庆安水利试验站,以水稻(OryzasativaL.)龙庆稻3号为试验材料,采用随机区组法,以负压式土壤湿度计监测土壤水势,研究镁水耦合对寒地水稻产量构成因素及产量的影响,以期为节水栽培提供理论依据和技术支持。结果表明,龙庆稻3号的镁肥?c水分处理间在穗数、穗粒数、结实率和产景上均存在互作关系;镁肥施用后,龙庆稻3号的穗数增加、穗粒数增加、结实率降低、千粒重降低、理论产量增加;以-15〜-20kPa为控水下限的水分管理,龙庆稻3号的穗数减少、穗粒数增加
2、、结实率降低、千粒重降低、理论产量增加;以-15〜-20kPa为控水下限同时施用镁肥的处理,龙庆稻3号的理论产景最高。返青期至成熟期进行-15〜-20kPa的间歇控水处理,节水率为28.5%。本文采集自网络,本站发布的论文均是优质论文,供学习和研究使用,文中立场与本网站无关,版权和著作权归原作者所有,如有不愿意被转载的情况,请通知我们删除已转载的信息,如果需要分享,请保留本段说明。关键词:水稻(OryzasativaL.);镁水耦合;产量构成因素;产中图分类号:S511;S365文献标识码:A文章编号:0
3、439-8114(2016)22-5740-05D0I:10.14088/j.cnki.issn0439-8114.2016.22.003EffectofMagnesiumFertilizerandWaterCouplingonYieldComponentsandYieldofRiceinColdRegionL??BYan-dongl,MAQing-huil,2,LIHong-yul,ZHOUJianl,PANShi-jUl,JIANGYu-weil,WANGLongl,CHENJian-xinl,WEN
4、Shao-pul,ZHENGGui-pingl(1.CollegeofAgronomy,HeilongjiangBayiAgriculturalUniversity/KeyLaboratoryofCropGermplasmImprovementandCultivationinColdRegionsofHeilongjiangProvincialEducationDepartment,Daqing163319,Heilongjiang,China;2.QixingFarmofGeneralBureauofS
5、tateFarmsofHeilongjiangProvince,Jiansanjiang156300,Heilongjiang,China)Abstract:Inordertoprovidethetheorybaseandtechnicalsupportforwater-savingcultivationtechnique,withLongqingdao3asmaterial,theeffectsofmagnesiumfertilizerandwatercouplingonyieldcomponentsa
6、ndyieldofriceincoldregionwerestudiedwiththerandomareagroupexperimentbyexaminingsoilwaterpotentialwithanegativepressuresoilmoisturemeterinQin’anirrigationtestingstation.Resultsshowedthattherewereinteractionsinthenumberofpanicle,grainnumberperpanicle,kernel
7、settingrateandyieldofLongqingdao3betweenmagnesiumfertilizerandwatertreatments.Afterapplicationofmagnesiumfertilizer,thenumberofpanicle,grainnumberperpanicleandyieldofLongqingdao3increased,andkernelsettingrateand1000-grainweightofLongqingdao3decreased.Inte
8、rmittentcontrollingwatertreatmentsat-15〜-20kPaofsoilwaterpotentialwerecarriedoutfromre-greentomature,thenumberofpanicle,kernelsettingrateand1000-grainweighofLongqingdao3decreased,andgrainnumberperpanicleandyieldofLo