几种化学物质配施对莴笋产量、硝酸盐含量和营养品质的影响研究  

Effects of several chemicals on yield,nitrate content and nutritive quality of lettuce

作　　者：苏胜齐[1] 王正银[1] 

机构地区：[1]西南大学资源环境学院,重庆400716

出　　处：《中国生态农业学报》2006年第4期102-105,共4页Chinese Journal of Eco-Agriculture

基　　金：重庆市科委攻关项目(2000-6208)资助

摘　　要：采用L8(27)正交设计研究了3种化学物质赤霉素(GA)、钼酸铵(Mo)、双氰胺(DCD)对盆栽莴笋产量、硝酸盐含量和营养品质的影响。结果表明,3种化学物质配施使莴笋增产10.7%～41.6%,其效应为Mo>GA>DCD;莴笋茎、叶硝酸盐含量分别降低21.8%～54.5%和4.3%～40.2%,其作用均为GA>DCD>Mo;莴笋茎Vc和氨基酸含量降低,水分增加;叶片Vc和氨基酸含量增加,水分无明显差异;莴笋施Mo明显增加茎和叶Mo含量,但食用安全。综合评价莴笋的产量、卫生安全和营养品质,以A1B1C1处理(GA25mg/L+Mo150mg/L+DCD12.5mg/盆)最理想。The orthogonal design, L8（27）, was adopted to study the effects of gibberellin （GA）, ammonium molybdate （Mo） and dicyandiumide （DCD） on the yield, nitrate content and nutritive quality of lettuce. The results indicate that the yields of lettuce are increased by 10.7 % --41.6 % by three chemicals combined treatments with the following sequence, Mo〉GA〉DCD. The nitrate contents in stem and leaf are decreased by 21.8% -54.5% and 4.3% -40.2%, respectively, with the following sequence, GA 〉 DCD 〉 Mo. Compared with CK, the contents of Vc and amino acid in stem are reduced while the water content increases according to the yield of lettuce with different fertilization. The contents of Vc and amino acid in leaf are improved but the water content does not change obviously. The spraying of ammonium molybdate can lead to the accumulation of Mo in lettuce, but it does not exceed the safe limit. According to the yield, nutritive content and healthy quality of lettuce, the optimum treatment is A1B1C4 （GA 25mg/L ＋ Mo 150mg/L ＋ DCD 12.5mg/pot）.

关 键 词：化学物质 莴笋 产量 硝酸盐 营养品质 

分 类 号：S63[农业科学—蔬菜学]