不同灌溉和施肥水平对东尼罗河三角洲地区甜菜产量、品质及部分水分指标的影响.pdf

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1、南方农业学报201I，42(8)：916—922JournalofSouthernAgriculturehttp：／／www．．fnyxb．eomEffectofdifferentlevelsofirrigationandnitrogenfertilizeronsugarbeetyield，qualityandsomewaterrelationsinEastDeltaregionAbdE1一RazekAM1，AttaY12，HassanAF2(1SugarCropsResearchInstitute，AgriculturalResearchCenter，Cairo

2、12619，Egypt；2WaterManagementResearchInstitute，NationalWaterResearchCenter，Cairo13411，Egypt)Abstract：【0biective】Twofieldexperimentswereconductedduring2008—2009and2009—2010seasonsatZankalonResearchStation，El—SharkiaGovernorate，Egypttostudythee骼ctofdifierentlevelsofirrigationandnitrogenf

3、ertilizersonsugarbeetyield，qualityandsomewaterrelations．【Method】Experimentswereconductedinsplitplotdesignwithfourreplicatesusingthreeirrigation(Ii12and13with60，80and100％offieldcapacity，respectively)andthreeNfertilizer(Nl，N2andN3with50，70and90kgN，fed，respectively)treatments．【Result】The

4、treatmentIlachievedthehighestroot，sugaryieldandrootdiameter，followedby12，whiletreatment13recordc‘1thelowestvalues．Ontheotherhand．rootlengthandsucrose％significantlydecreasedwithincreasingirrigationlevels．IncreasingNfertilizeruDto90kgN／fed(N3)increasedrootlength，rootdiameter，androotands

5、ugaryieldsignifieandy，whiledecreasedsucrose％．TheresultsshowedthatboththeirrigationandNfertilizertreatmentshadnosignificanteffectonpurity％．TheamountsofaD．pliedwaterinthreetreatmentswasrecordedas3579．7．3042．0and2504．0m2／fed，respectively。andtheseasonalwaterconsumptiveusevalueswererecorde

6、das58．12，52．06and47．29cm，respectively．Waterusee仿ciencies(WUE)forrootyieldwerecalculate,las15．86，13．78and13．35kgrootdm3water。whiletheywere2．73．2．61and2．56kgsugadm3waterforsugaryield，fortreatment11．12and11．respectively．IncreasingNfertilizationlevelincreasedactualwaterconsump．riveuseandW

7、UEforrootandsugaryields．Averageseasonalcropcoefficientvalueof0．87wasobtainedforsugarbeetcropgrownatEastDeltaregion．【Conclusion】ItmayberecommendedtousetheempiricalvaluesofKcinordertocalcu．1ateconsumptiveuseatEastDeltaregion．Keywords：sugarbeet；irrigation；nitrogenfertilizer；yield；quality

8、；wate