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1、-increasedwiththeincreaseoffertilizer,availablephosphoruscontentofAlfalfaharvesttwocropswerehigherthanbeforesowing,whilethecontentofavailablepotassiumwaslowerthanthatbeforesowing.3.Ontwokindsofcropplantingconditionsyieldsimulationresults:significantlyaffecte
2、dtheyieldofAlfalfafrombigtosmallorderis:W>P>N,significanteffectofsilagemaizeyieldsequencefromhightolow:W>N>P;Atthesametime,theanalysisofsinglefactoranalysisandinteractionalso,theyieldofAlfalfaincreasedandthendecreasedtrendwithincreaseofNandW,increasedwiththe
3、increaseofPcontent;therewillbeincreasingeffectofPandWwithinacertainrange,theexcesswillleadtoadeclineinoutput;SilagemaizeyieldwasfirstincreasedandthendecreasedwiththeincreaseofNandP,increasedwiththeincreaseofWcontent,WforNandPplayeffect,NandPinteractionwithin
4、acertainrangehaseffectonincreasingyield,excessiveusewillbemutualinhibition.4.Theoptimalirrigationschemeoftwokindsofcropsplantingconditions:irrigation(X1):63.2%~67.4%;nitrogen(X2):278.4~291.8kg/hm2;Phosphorus(X3):223.8~237.5kg/hm2KeyWords:Stripintercropping;W
5、aterandfertilizercoupling;Quadraticregressionorthogonaldesign;Cropwaterrequirement;YieldDirectedby:Prof.LVZhiyuanApplicantforMasterdegree:WEIXuemin（AgriculturalWaterandSoilEngineering)(CollegeofMechanicalandElectricalEngineering.InnerMongoliaAgriculturalUniv
6、ersity.Hohhot010018.China)---目錄1引言................................................................11.1研究的背景與意義................................................11.2國內(nèi)外研究現(xiàn)狀..................................................17.5乳業(yè)飼草料的特點(diǎn)...........................
7、...................17.6立體種植國內(nèi)外研究現(xiàn)狀........................................27.7水肥耦合國內(nèi)外研究現(xiàn)狀........................................31.2.3.1水肥耦合概述................................................31.2.3.2水肥耦合對(duì)土壤水分、養(yǎng)分的影響研究現(xiàn)狀......................41.2.3.3水肥耦合對(duì)紫花苜蓿性
8、狀影響的研究現(xiàn)狀........................41.3研究目標(biāo)、內(nèi)容與技術(shù)路線........................................61.3.1研究目標(biāo)與內(nèi)容................................................61.3.2研究技術(shù)路線.................................
