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1、第32卷第3期干旱地區(qū)農(nóng)業(yè)研究V01.32No.32014年5月iculturalResearchintheAridAreasMa_V2014不同水肥配合對馬鈴薯產(chǎn)量的影響劉凡,李援農(nóng),尹娟2,(1.西北農(nóng)林科技大學(xué)水利與建筑工程學(xué)院,陜西楊凌712100;2.寧夏大學(xué)土木與水利工程學(xué)院,寧夏銀川750021;3.旱區(qū)現(xiàn)代農(nóng)業(yè)水資源高效利用教育部工程研究中心,寧夏銀川750021)摘要:通過馬鈴薯膜下滴灌水肥耦合盆栽試驗,以補水時期()、補灌定額()、施氮量(X3)、施磷量(X4)、施鉀量(X5)為
2、試驗因素,采用5因素5水平(1/2實施)的二次旋轉(zhuǎn)回歸正交組合試驗設(shè)計。研究了不同氮、磷、鉀配施對馬鈴薯產(chǎn)量的影響,創(chuàng)建了馬鈴薯產(chǎn)量與補水時期、氮、磷、鉀施用量和灌水量關(guān)系方程。結(jié)果表明:各因素的作用順序為:X5>X4>X3>X2>X1,各因子的交互項對馬鈴薯產(chǎn)量的影響順序為Xs>X3X5>X2X4>X2X5>X3;在以產(chǎn)量為目標(biāo)函數(shù)時,最高產(chǎn)量為33.785t·hm-2時,補水時期為苗期灌水總量為灌溉定額的25%、現(xiàn)蕾期灌水總量為灌溉定額25%、初花期灌水總量為灌溉定額的50%;水肥耦合關(guān)系為灌溉
3、定額為822m3·hm_,施氮量、施磷量、施鉀量分別為73.5kg·hm一、224.4kg·hm_、223.8·hm~。關(guān)鍵詞:馬鈴薯;補灌;氮、磷、鉀肥;水肥耦合;二次旋轉(zhuǎn)回93-正交組合;產(chǎn)量中圖分類號:$532.071;$532.062文獻標(biāo)志碼:A文章編號:1000—7601(2014)03—0108—06EfectondiferentwaterandfertilizercouplingtoyieldofpotatoLIUFan,LIYuan—nong,YINJuan2,(1.Col~geo
4、fWaterResourcesandArchitecturalEngineering,NorthwestA&FUniversity,Yangling,Shaanxi712100,China;2.CollegeofCivilandWaterConservancyEngineering,MUniversity,Hnehnan,Ningxia750021,China;3.CenerofSaveWaterIrrigationEngineeringandWaterResourceControlTechnolo
5、gyResearchofNingxia,~hnan,Ningxia75(}021,China)Abstract:Thoughthepotexperimentofwaterandfertilizercouplingforpotatobydripirrigationunderfilm,takingtheirrigationtime(X1),amountofirrigation(X2),quantityofnitrogen(X3),phosphate(X4)andpotassium(Xs)werefort
6、hetestfactors.Adoptedthedesignof5~ctomand5levelsquadraticregressionbyrotation—orthogonalcombina—tiontostudytheeffectsofdifferentNPKfertilizercombinationstotheyieldofpotato,hasestablishedtheequationsofpotatoyieldwiththeirrigationtime,quantityoftheNPKfer
7、tilizerandamountofirrigation.Theresultsindicatedthat:Thefunctionorderforeach~ctomwasX5>X4>X3>X2>1,andtheeffectsequenceforthepotatoyieldbythein—teractiontermasX4X5>X3X5>X24>25>X2X3.Whentheyieldasfortheobjectfunction,thehighestyieldwas33.785t’hrn一,theper
8、centageofirrigationamountatseedingperiod,buddingstageandinitialboomstagetothewholeirrigationquotawas25%,25%,50%,respectively.Wesuggestthatwholeirrigationquotawas822m3·hm~,thequantityoftheN,PandKwas73.5kg‘hm一,224.4kg‘ban一and223.8kg。hm一,r