Hoagland-营养液配方(试验总结)

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Hoagland营养液配方,荷格伦特营养液的配方如下:改良霍格兰配方:四水硝酸钙945mg/L硝酸钾506mg/L硝酸铵80mg/L磷酸二氢钾136mg/L硫酸镁493mg/L铁盐溶液2.5ml微量元素液5mlpH=6.0铁盐溶液:七水硫酸亚铁2.78g乙二胺四乙酸二钠(EDTA.Na)3.73g蒸馏水500mlpH=5.5微量元素液:碘化钾0.83mg/l硼酸6.2mg/L硫酸锰22.3mg/L硫酸锌8.6mg/L钼酸钠0.25mg/L硫酸铜0.025mg/L氯化钴0.025mg/L若作为复合肥使用,可以采用天然水配制,省略微量元素液。若作为无土栽培营养液需用人工软水配制,如蒸馏水,微量元素液必须加入。经常将上述营养液配成10倍或20倍浓度,用时稀释即可。注意用前调整pH。我打算先配2L,大量元素:需Ca(NO3)2·4H2O:1.89g,KNO3:1.012g,NH4NO3:0.16g,KH2PO4:0.272g,MgSO4·7H2O:0.986g。微量元素:碘化钾1.66g,硼酸12.4g,硫酸锰:44.6g,硫酸锌17.2g钼酸钠0.5g硫酸铜0.05g氯化钴0.05g。铁盐:七水硫酸亚铁:2.78g,乙二胺四乙酸二钠(EDTA.Na)3.73g。整个配制大约需要:5L蒸馏水。调PH的盐酸,pH试纸。500mL容量瓶一个,1L的容量瓶3个,玻棒和烧杯若干。1.大量元素每升培养液中加入克数或摩尔数盐类浓度g/Lmol/Lg/2Lg/15LCa(NO3)2·4H2O1.180.0052.3617.7KNO30.510.0051.027.65MgSO4·7H2O0.490.0020.987.35KH2PO40.140.0010.282.12.微量元素每升培养液中加入的毫克数盐类浓度(mg/L)浓度(mg/2L)mg/15LH3BO32.865.7242.9MnCl2·4H2O1.813.6227.15ZnSO4·7H2O0.220.443.3CuSO4·5H2O0.080.161.2H2MoO4·H2O/Na2MoO4·2H2O0.02/0.030.040.48先配g/L的微量元素溶液,然后吸取1ml+大量元素稀释1000倍定容。3.每升培养液中加入2mLFeEDTA溶液(即乙二胺四乙酸铁盐溶液)。铁盐溶液:七水硫酸亚铁2.78g乙二胺四乙酸二钠(EDTA-Na2)3.73g蒸馏水500mL配制500mL的铁盐溶液:1.取两只洁净干燥烧杯,分别加入3.73gEDTA-Na2和2.78gFeSO4·7H2O固体。2.取1L纯水煮沸,冷却至70℃后,量取300mL,加入装有EDTA-Na2的烧杯中,进行搅拌溶解。3.量取200mL纯水,冷却后加入另一烧杯中,搅拌溶解。4.然后将FeSO4·7H2O溶液缓缓加入到EDTA-Na2溶液中,边加边搅拌。5.最后,将铁盐溶液倒入棕色瓶中(黑暗),低温保存。通常应当先配出各种盐类的浓缩液。注意避免浓缩液中出现沉淀。使用时按一定的比例加水稀释到要求的浓度。采用循环供液时,营养液中的矿质元素被植物体吸收后,应当及时进行调节,使营养液仍旧符合原配方的要求。以下是老外的有些看不懂呵呵RecipeforHoagland'sCompleteNutrientSolutionThisismadeessentiallyaccordingtothefollowingreference:D.R.HoaglandandD.I.Arnon.Thewater-culturemethodofgrowingplantswithoutsoil.Calif.Agr.Expt.Sta.Circ.347.1950.Thereisonechangeandthatisintheformofironadded.Preparethefollowingstocksolutions(1-6)andusetheamountsindicatedtoprepare1liter(finalvolume)ofnutrientsolution:1.1.00MNH4H2PO4use1mL/Lofnutrientsolution2.1.00MKNO3use6mL/Lofnutrientsolution3.1.00MCa(NO3)2use4mL/Lofnutrientsolution4.1.00MMgSO4use2mL/LofnutrientsolutionMicronutrientstocks:combinethefollowingamountofsaltsinatotalvolumeofoneliterofwater,andthenuse1mL/Lofthisentirestockmixture(5)alongwiththestocksabove(1-4)andtheironstock(6)describedbelowtomakeupatotalof1Lofnutrientsolution.5.2.86gmH3BO31.81gmMnCl2.4H2O0.22gmZnSO4.7H2O0.08gmCuSO4.5H2O0.02gmH2MoO4.H2O(Assaying85%MoO3)6.Ironstock:totheabove5stocksadd0.25mlofthisironstockfor1literofnutrientsolution.Tomakeuptheironstock,take26.1gEDTAanddissolvein286mlwaterthathas~19gKOH.Thendissolve24.9FeSO4.7H2Oin~500mlwater.SlowlyaddtheironsulfatesolutiontothepotassiumEDTAsolutionandaeratethissolutionovernightwithstirring.ThepHrisestoabout7.1andthesolutioniswineredandverylittleprecipitationoccurs.Maketo1literfinalvolumeandstoreinabottlecoveredwithfoil(dark).Note:Hoagland'srecipecalledfor1mlof0.5%irontartratestockperliterofnutrientsolutionbutweusetheabovesubstitution.

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