【摘要】 在人工气候室和常温栽培条件下，研究了不同生长期化学物质赤霉素（Ｇ）和钼酸铵（Ｍ）对莴笋、小白菜硝酸盐含量和营养品质的效应。结果表明，两种环境下外源化学物质明显提高莴笋株高和小白菜根重，但却使莴笋叶绿素含量降低。两种环境下Ｇ２和Ｍ２（莴笋９叶期和小白菜４叶期）均明显提高两种叶类蔬菜ＡＡ的Ｖｃ含量，因而是Ｇ和Ｍ的最适施用时期。更多还原

【Abstract】 Artificialclimatelaboratory(ACL)andordinarycultureexperimentswereconductedtostudytheeffectofchemicalmatteri.egibberellin(G)andammoniummolybdate(M)onthecontentofnitrateandnutrientqualityinlettuceandBrasicachinensissL.atdifferentgrowthstages.ResultsindicatedthattwochemicalmatterincreasedobviouslytheheightoflettuceplantandrootweightofBrasieachinensisL.anddecreasedthecontentoflettucechlorophyll.G2andM2(attheninthleafstageforlettuceandatthefourthleafstageforBrasicachinsnsissL.)improvedobviouslythecontentsofaminoaciedandVcintwoleafvegetables,andwasconsideredastheoptimumapplicationstage.更多还原