钾素水平对网纹甜瓜矿质元素积累及果实品质的影响.doc

钾素水平对网纹甜瓜矿质元素积累及果实品质的影响钾素水平对网纹甜瓜矿质元素积累及果实品质的影响?CT?toniOULIURtE明哪fl:S哪%华北农?2007,22(6):,黄丹枫,杨延杰2,陈宁2(,上海200240;,山东青岛266109)摘要:目前已报道的甜瓜专用营养液配方中钾素水平差异较大,,本试验在120,240和360mg/L三个钾素水平下,对温室基质栽培网纹甜瓜的植株生长,矿质元素积累及氨基酸,:营养液中240H唔/L的钾素水平可增强网纹甜瓜植株的生长势,促进茎杆粗壮,有利于矿质元素吸收,,对营养风味品质的影响主要表现在显着提高果肉内可溶性固形物,谷氨酸,天门冬氨酸,(36omg/L),温室基质栽培网纹甜瓜营养液中的最适钾素水平应为240mg/L,此时植株对N,P,K,Ca,Mg的吸收比例为28:5:40:21::网纹甜瓜;钾素水平;品质;矿质元素积累;基质栽培中图分类号::A文章编号:1000—7091(2007)06—0001—umulationandFruitQuafityofMuskmeloninSoillessMediumCultureLINDuo,一,,,CHENNing~(,ShanghaiJiaotongUniversity,Shanghai200240,China;,QingdaoAgriculturalUniversity,Qingdao266109,China)Abstract:Potassiumlevelinpreviousnutrientsolutionformuskmelonvariedconsiderably,,240,and360mg/Lpotassiumlevelsonplantgrowth,umulation,poundsinfruitwerestudied,inordertooptimizepotassiumfertilizerapplica-'l,emuskmelonvigorouslygrewatpotassiumlevelof240mg/,,glutamicacid,asparticacid,alanine,and'ponentsconcentrationweresig-nificantlyincreasedinfruitfleshwith240mg/Lpotassiumlevel,(360mg/L)—sorptionratioofN,P,K,Ca,MgWas28:5:40:21::Muskmelon;Potassiumlevels;Fruitquality;umulation;Soillessmediumculture营养液的配方和浓度是决定园艺作物基质栽培成败的关键,但在已报道的甜瓜专用营养液配方中钾素水平差异较大[?,(CucumismeloCVreticu