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《營養(yǎng)生態(tài)肥對水稻產(chǎn)量_氮肥農(nóng)學(xué)利用率及經(jīng)濟(jì)效益的影響》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、中國農(nóng)學(xué)通報2014,30(3):178-181ChineseAgriculturalScienceBulletin營養(yǎng)生態(tài)肥對水稻產(chǎn)量、氮肥農(nóng)學(xué)利用率及經(jīng)濟(jì)效益的影響李若清(宣城市宣州區(qū)農(nóng)技推廣中心,安徽宣城242000)摘要:為生態(tài)肥在皖南地區(qū)水稻生產(chǎn)中推廣應(yīng)用提供科學(xué)依據(jù),通過田間小區(qū)試驗,研究不同營養(yǎng)生態(tài)肥處理對水稻產(chǎn)量、氮肥農(nóng)學(xué)利用效率和經(jīng)濟(jì)效益的影響。結(jié)果表明,生態(tài)肥Ⅱ(基施生態(tài)肥追施尿素)能顯著提高水稻的穗粒數(shù)和結(jié)實率,并且水稻產(chǎn)量最高,分別比其他2個施肥處理增產(chǎn)3.9%和3.1%,但是生態(tài)肥Ⅰ(一次性基施生態(tài)肥)的氮肥偏生產(chǎn)力和氮肥農(nóng)
2、學(xué)利用率最高,分別比其他2個施肥處理增加63.8%~91.8%和67.7%~77.1%。與復(fù)合肥處理和生態(tài)肥Ⅱ處理比,生態(tài)肥Ⅰ處理的凈收入和產(chǎn)投比分別增加1.2%~4%和25.7%~46.5%,說明一次性基施生態(tài)肥能夠達(dá)到水稻高產(chǎn)高效的目的。關(guān)鍵詞:營養(yǎng)生態(tài)肥;水稻;產(chǎn)量;氮肥農(nóng)學(xué)利用率;經(jīng)濟(jì)效益中圖分類號:S145.5文獻(xiàn)標(biāo)志碼:A論文編號:2013-0470EffectofNutritionEcologicalFertilizeronRiceYield,AgronomicNitrogenUseEfficiencyandEconomicBenefi
3、tLiRuoqing(TheXuanzhouAgro-technologyExtensionCenter,XuanchengAnhui242000)Abstract:Fieldexperimentwasconductedtostudytheeffectsofnutritionecologicalfertilizeronriceyield,agronomicnitrogenuseefficiencyandeconomicbenefit,inordertoprovidingscientificevidencefortheapplicationofecol
4、ogicalfertilizerinriceproductioninsouthernAnhui.Theresultsindicatedthat:theecologicalfertilizerⅡtreatment(combinationofecologicalfertilizerasbasalmanureandureaastopdressing)couldsignificantlyincreasedgrainsperpanicle,seedsettingrateandriceyield.Comparedwiththeothertwotreatments
5、,thericeyieldoftheecologicalfertilizerⅡwasincreasedby3.9%and3.1%,respectively.However,thepartialfactorproductivity(PFPN)ofappliedNandagronomicnitrogenuseefficiency(AEN)oftheecologicalfertilizerⅠtreatment(ecologicalfertilizerasbasalmanureandwithouttopdressing)weresignificantlyin
6、creasedby63.8%-91.8%and67.7%-77.1%thentheothertwotreatmentsrespectively.ComparedwithcompoundfertilizerandecologicalfertilizerⅡ,thenetincomeandoutput-inputratioofecologicalfertilizerⅠwereincreasedby1.2%-4%and25.7%-46.5%,respectively.Itshowedthatsinglebasalapplicationofecological
7、fertilizerⅠcouldachievethegoalofhighyieldandefficiency.Keywords:nutritionecologicalfertilizer;rice;yield;agronomicnitrogenuseefficiency;economicbenefit[1]0引言比,中國水稻生產(chǎn)氮肥施用量較高而利用率較低。中國是水稻生產(chǎn)大國,氮肥的施用是保證水稻產(chǎn)許多研究表明,水稻的當(dāng)季氮素利用效率平均在30%~[2-3][4]量的重要措施之一。據(jù)估計,中國水稻生產(chǎn)所消耗的35%之間,低于世界發(fā)達(dá)國家水平。造成肥料利
8、用氮肥占世界水稻氮肥總消耗的37%,與主要產(chǎn)稻國相率低的主要原因包括高產(chǎn)農(nóng)田過量施肥,忽視土壤和基金項目:公