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1、优化施肥对皖稻68生长和产量的影响安徽农业科学,JournalofAnhuiA.Sci.2007,35(27):8571—8573责任编辑孙红忠责任校对李菲菲优化施肥对皖稻68生长和产量的影响李胜群,陈景道,左庆(安徽省风台县水稻原种场,安徽凤台246100)摘要对皖稻68的施肥方式进行优化.于2OO6年在安徽省凤台县桂集乡的水稻田中,设置CK(不施肥),N60:30:10(氮肥按基一蘖一穗60%一30%一10%施用,N,Os,0总量比例为1:0.25:0.25),N40:30:30(N,Os,K20总量
2、比例为1:0.30:0.40),N35:20:45(N,05,0总量比例为1:0.30:0.40)4个处理,研究优化施肥对皖稻68生长和产量的影响.皖稻68在肥力水平中等的水稻田,以施氮量280khm2.N,P,K比例为1:0.30:0.40,氮肥的运筹方式以基一蘖一穗为35:20:45的产量最高,达9586.5kg/lun2,比对照增产35.91%,肥料贡献率达到26.42%,比习惯施肥增产11.82%.在安徽省沿淮中稻区,水稻的氮,磷,钾用量比例应为1:(0.3～0.6):(0.8～1.0).皖稻68
3、氮肥用量在240～300l~/hm2.一定施肥水平下,在氮肥运筹上以基一蘖一穗比例为(30～40):(25～30):(30～45)为宜.关键词优化施肥技术;水稻;产量及构成因素;土壤贡献率中图分类号$511文献标识码A文章编号0517—6611(2007)27—08571—03InfluencesofOvtimizingFertilizationontheGrowthandYieIdofRiceVariety-Wandao68LISheng-qunetal(RicePlantationofFengtaiC
4、ountyofAnhuiProvince,Fengtai,Anhui246100)Abstract11heaimwastooptimizingthefertilizationmodeonWandao68.InpaddyfieldofGuijitownshipinFengtaieountyofAnhuiprovincein2006,influencesofoptimizingfertilizationonthegrowthandyieldofWandao68werestudiedbasedon4treatm
5、entsas:CK(nofertilizer),N60:30:10(Nfer—tilizerfertilizedwiththeratioofbase_tiller-earbei60%一30%一10%andtotalamountratioofN,O5,K,0at1:0,25:0.25),N40:30:30(totalrate0fN,,Oat1:0.30:0.40),N35:20:45(totalrateofN,05,Oat1:0.30:0.40).Inthepaddyfieldwithmiddleferti
6、lity,theyieldofWandao68inthetreatmentofNfertilizerof280kg/hm2andtheratioofN,P,Kat1:0.30:0.40,whoseyieldwashlghest(9586.5kg/hm~)whenNfertilizermanageraentwasthatthemfi0ofbase-tiller-earwas35:20:45andincreasedby35.91%thanthatofCK.atlditsfertilizercontributi
7、onratereached26.42%.increasingbyl1.82%thanthatwithcustomfertilization.InlatericeregionalongHuaihefiverinAnhuiprovince.theN-p-Kfertiliza—tionratioinriceshouldbe1:0.3～0.6:0.8～1.0andtheNfertilizationrateofWandao68was240～300kg/hm~.Undercertainfertilizationlev
8、e1.base—tiller-eRrratioat30～40:25～30:30～45wassuitableinNfertilizermanageraent.KeywordsOptimizingfertilizationteehniclue:Rioe:Yieldandcomponents;Soiloontributionratio针对安徽省沿淮地区稻田肥力状况,纠正在水稻施肥中存在的重氮轻磷钾,氮肥施用时期不合理等现象,在进行土
