伴生大麦和芥菜对连作辣椒叶片保护酶活性及根际土壤环境的影响  

Effect of Companion Barley and Mustard on Protective Enzyme Activity and Root Soil Environment of Continuous Cropping Pepper

作　　者：张福建[1] 陈昱[1] 杨有新[1] 吴超群[1] 范淑英[1] 吴才君[1] 

机构地区：[1]江西农业大学农学院,江西南昌330045

出　　处：《中国蔬菜》2018年第2期42-46,共5页China Vegetables

基　　金：江西省现代农业科研协同创新专项(JXXTCX2015005-002);江西省重点研发计划项目(20161ACF60015);江西省现代农业产业技术体系建设项目(JXARS-06)

摘　　要：以辣椒品种辛香8号为试验材料,设伴生大麦处理、伴生芥菜处理、单作辣椒处理(CK)和无苗处理(不栽培任何植物的连作土,CW),采用盆栽试验研究伴生大麦和芥菜对连作辣椒叶片保护酶活性及根际土壤环境的影响。结果表明:伴生芥菜处理的辣椒株高比CK显著增加了8.64%。伴生大麦和芥菜处理均可提高辣椒叶片POD和CAT活性,显著降低辣椒叶片H_2O_2含量,其中伴生芥菜处理效果较好,POD、CAT和APX活性分别比CK显著增加了12.61%、90.91%和38.71%。两种伴生处理的土壤中放线菌、细菌以及总菌数量均高于CK和CW,真菌数量显著降低,伴生处理还可以提高土壤中多酚氧化酶、脲酶和蔗糖酶的活性。伴生芥菜处理的辣椒根际土壤p H值显著升高,电导率显著降低。综上,伴生大麦和芥菜栽培均可提高辣椒叶片保护酶活性,改善根际土壤环境。This paper studied the effect of accompanying barley and mustard on protective enzyme activity of pepper leaves and root soil environment in continuous pepper cropping,taking pepper variety‘Xingxiang No.8'as material and by pot experiment. The experiment set the accompanying barley treatment,accompanying mustard treatment,mono-culture pepper treatment(CK)and no seedling treatment(without any plant continuous cropping soil,CW). The results showed that the height of pepper plant with accompanying mustard treatment was 8.64% higher than that of the CK. Accompanying barley and mustard treatment could improve POD and CAT activities and reduce H_2O_2 content of pepper leaves. Between them,accompanying mustard treatment had the better effect. The activities of POD,CAT and APX were increased by 12.61%,90.91% and 38.71%,respectively. The amount of soil actinomycetes,bacteria and total bacteria with accompanying barley and mustard treatment were higher than that of the CK and CW. The number of fungi was significantly reduced,and the activities of polyphenol oxidase,urease and sucrase were increased. At the same time,the p H value of pepper rhizosphere soil accompanying mustard treatment was significantly increased,and conductivity significantly decreased. To sum up,the accompanying barley and mustard cultivation can improve the soil rhizosphere environment and increase protective enzyme activity in pepper leaves.

关 键 词：辣椒 伴生 连作障碍 保护酶活性 根际土壤 

分 类 号：S154[农业科学—土壤学] S641.3[农业科学—农业基础科学]