配方施肥对桔梗抗氧化酶活性的影响  

Effects of Formulated Fertilization on Autioxidant Enzyme Activities of Platycodon grandiflorum

作　　者：廖兴国[1] 郭圣茂[1] 赖娴[1] 陈兰兰[1] 赖晓莲[1] 熊光康 

机构地区：[1]江西农业大学园林与艺术学院,江西南昌330045

出　　处：《贵州农业科学》2014年第10期144-147,共4页Guizhou Agricultural Sciences

基　　金：江西省科技支撑计划(20111BBG70030-5)

摘　　要：为探讨桔梗在氮、磷、钾不同配方施肥下抗氧化酶活性的变化规律,采用盆栽正交试验设计,对桔梗叶片丙二醛含量、超氧化物歧化酶、过氧化物酶、过氧化氢酶活性进行了测定。结果表明:不同配方施肥对桔梗抗氧化酶活性有显著影响。氮、磷、钾配比合理时,丙二醛含量较低,膜伤害度较小,抗氧化酶SOD、CAT、POD活性最高。最佳施肥配比为N 0.15g/kg、P2O50.2g/kg、K2O 0.25g/kg。For exploring the change regulation of autioxidant enzyme activities of P .grandiflorum applied with different formulated fertilization,the activity of MDA,POD,SOD,CAT in the leaves of P .grandiflorumwere measured by orthogonal design.The results showed that the combined fertilization of nitrogen,phosphorus and potassium had remarkable effects on the antioxidant enzyme activities of P .grandiflorum.When the combined fertilization of N,P,K was reasonable,the content of MDA was lower and the injured degree of the cell membrane were slighter.The activity of SOD,CAT,POD were the highest.N：0.15 g/kg,P2 O5 ：0.2 g/kg,K2 O：0.25 g/kg soil was the best ratio.

关 键 词：桔梗 配方施肥 丙二醛 超氧化物歧化酶 过氧化物酶 过氧化氢酶 

分 类 号：S506.2[农业科学—作物学]