不同氮素形态及配比对蔬菜生长和品质的影响

272Vol.27No.219994ActaUniv.Agric.Boreali2occidentalisApr.1999(,712100),,,NO-3-NNH+4-N11NH+4-N,,,NO-3-N,NH+4-N,,C,,,,,,S158.3,Q945.12NO-3-NNH+4-N,[15],,NH+4-NK+Ca2+,,[4]NO-3-N,:,,NO-3-N,[1];NO-3-NpH,,,[1,3];,NO-3-N[1,6],[68],,[5,9,10],,,[1,4],(NO-3NH+4=7030),,[1,3],NH+4-N,[1,4],NH+4-N,NO-3,,NH+4-N,11.119961119972,7,30d450mL1998209215,95J242,,1967,,©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,NO-3-NNO-3-N+NH+4-N(NO-3NH+4=11)NH+4-N3(NaNO3NH4NO3NH4Cl),4N,P,K,Ca,Mg,SCl12,1,5,4,2,48mmolL-1;Fe,B,Mn,Zn,CuMo3,0.5,0.5,0.05,0.02,0.01mgL-1[11].1,10d1,68d.1.219971012,,30d3.4L6(1),4P,K,Ca,MgS4,8,4,4,6mmolL-1;Cl8mmolL-1,1.1.7d1,10min.NO-3-N14d,17d8mmolL-1,814d12mmolL-1.15d,28d,7d1,8,8,12,12mmolL-1(NaNO3)C[12][13](),1mmolL-1N8mmolL-1N12mmolL-1NO-3-NNH+4-NNNO-3-NNH+4-NN1NO-3NH+4=10007.508.011.5012.02NO-3NH+4=70305.02.58.08103.512.03NO-3NH+4=50503.54.08.05.56.012.04NO-3NH+4=30702.05.58.03.08.512.05NO-3NH+4=59507.58.0011.512.06NO-3=59507.58.0011.512.0:NO-3-N6.7mgL-1,0.5mmolL-1.22.1(),750%(:11),,,,7,570%(,2),2göNNO-3-N78.6(100)A37.4(100)A40.5(100)A28.6(100)A31.3(100)A17.9(100)a43.2(100)aNO-3+NH+415.4(15)B327.3(73)B28.0(69)B23.9(84)A23.2(74)A18.7(104)a30.3(70)aNH+4-N-(-)38.5(23)C4.6(11)C7.4(26)B3.1(10)B-(-)324.2(56)aNO-3-N5.34(100)A3.88(100)A2.94(100)aA2.28(100)A2.30(100)A3.22(100)A6.47(100)aNO-3+NH+43.04(57)B3.55(92)A2.44(83)bA2.43(107)A2.40(104)A3.16(98)A5.70(88)aNH+4-N0.66(12)C1.45(37)B0.52(18)cB0.81(36)B0.47(20)B2.11(66)B4.31(66)a:3;NO-3-N10072:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2.2()2.2.13,14d,NO-3-N,NH+4-N(1,5,6),NH+4-N;,,3NH+4-N0NO-3-NNH+4-N(15),,,3göNO-3NH+411000126.0B9.90b43.1a6.13a27030158.0A10.55a41.4a5.97a35050153.8A10.44a32.5a5.09a43070158.0A10.69a40.7a5.60a5595168.0A10.72a47.5a6.68a6595()121.9B9.17b40.4a6.36a1:2.2.24,NH+4-N,NO-3-N,NH+4-N,NH+4-N,NO-3-N(Lgög)NO-3-N25%15%,NH+4-N,NO-3-N,(Lg)NH+4-N(1)4NO-3-NLgg-11731a640a135a467a501a607a285a407a2696a647a171a459a295b557b291a393a3568b501b85b353b277b306c175b248b4464c405c58bc271c159c66d33c77c5250d216d33cd118d82d105d35c61c6147e79e0d42e205c61d14c71c:2;NO-3-N2.2.3C,C827©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,C(5),NH+4-N,CCNO-3-NNH+4-N(5)5CmgögNO-3NH+4NO-3NH+4110000.680.95430700.560.95270300.630.8955950.590.94350500.610.876595()0.390.993,NH+4-N,[1,3,4][1,4],,NH3,NH3pH,,H+,NH3,NH+4,NH+4.NH+4,pH,NH3,NH3[14],(NO-3-NNO-3-N,NH+4-N),,,C,NH+4-N,:,,,;,7dpH,NH3,pH,7dpH6;NO-3-NNO-3-NNH3,,,,1,,,.NO-3-NNH+4-N.,1990,13(3):70742,..,1993,16(2):1111133,,..,1992(4):134,..:,1985.345,,,..,1990,22(4):2222256..,1987(3):9107,VlassakK..,1993(4):273092:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.8CemeHobBA...,1991(1):24269,,..,1991,17(1):172210,,..,1989,4(1):11011511,,,.NO-3-N.,1990,13(1):757912..:,1987.12412613..1.:,1986.858814MengelK,KirkbyEA.Principlesofplantnutrition.Worblaufen2Bern:InternationalPotashInstitute,1982.353354EffectofDifferentNitrogeousFormsandNO-3toNH+4RatioonGrowthandQualityofVegetablesTiaoXiaohongWangZhaohuiLiShengxiu(DepartmentofResourcesandEnviromentalSciences,NorthwesternAgriculturalUniversity,Yangling,Shaanxi712100)AbstractInordertoinvestigatetheeffectofdifferentnitrogenformsandNO-3toNH+4ratioongrowthandqualityofvegetables,solutioncultureexperimentinwhichthedistilledwaterandtherunningwaterweresuppliedasgrowthmediumrespectivelywasconducted.Theresultsareasfollows:withthedistilledwaterasgrowthmedium,veg2etablegrowthisinhibitedtosomeextentwhenNO-32N:NH+42Nratiois11orNH+42Nissuppliedsolely,whenNH+42Nisonlynitrogensource,thevegetablegrowthamountisleast.Whentherunningwaterinwhichthesmallamountofnitrateexistesissuppliedasculturemedium,atfirstthevegetablewasculturedforsometimeonlyNO-32Nasnitro2gensource,thenincreasingtheNH+42Npercentageinnutrientsolution,whichfavoursgrowthanddevelopmentofvegetables,inthemeantimethenitratecontentinvegetablesdecreased,vitaminCcontentinlettucedecreasedandvitaminCinspinachesdidnptshowapparentlychange.Whenthevegetablegrowthamountisrelativelylarge,thenitrogensourcemainlysuppliedbyureacanptmeetthedemandofvegetabletonitrogen.Keywordshydroponicsexperiment,nitrogeousforms,ammoniatoxication,nitrateaccumulation,vegetableculture0127©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.