土壤学报2016，Vol.53Issue(6)：1497-1505,9.DOI:10.11766/trxb201603020025
茅苍术间作对连作花生土壤线虫群落的影响
Effects of Interplanting ofAtractylodes lanceain Monocultured Peanut Fields on Soil Nematode Community
摘要
Abstract
Abstract[Objective]In this study,responses of soil nematodes community in composition and diversity to interplanting ofA.lanceain monocultured peanut soil were explored and mechanisms of the effects analyzed.[Method]Soil samples were collected from a 10-year monocultured peanut field for a pot experiment,which was designed to have two treatments,i.e. monocropping of peanut and interplnating ofA.lanceawith peanut. At the maturing stage of peanut,population of nematodes in rhizosphere soils of the peanut andA. lanceawas measured,separately,and composition and diversity of the nematode communities were analyzed.[Result]Results show that in the treatment of interplanting,the peanut significantly increased in plant height,main root length,straw yield and pod yield and the nematodes changed in density,diversity and community structure. Interplanting significantly decreased the population of nematodes in the rhizosphere soils of both peanut andA. lancea,especially the number of plant-parasitic nematodes,which used to be the dominant group. Interplanting significantly enhanced the relative abundance of bacterivores,fungivores,and predators/omnivores,but significantly inhibited plant-parasites in the rhizosphere soils of peanut. Analysis of nematode ecological indices shows that the interplanting treatment was more stable in soil ecosystem,and it raised Shannon-Wiener index(H′)and evenness index(J),and lowered dominance index(λ)of the nematodes in the rhizosphere soil of peanut,while,increasing evenness index(J)and altering little diversity index of the nematodes in rhizosphere soil ofA. lancea. Interplanting also significantly increased Wasilewska index(WI)and maturity index(MI)of the nematodes in the rhizosphere soil of peanut,while reducing plant parasite index(PPI)of the nematodes in the rhizosphere soil of peanut and affecting little Nematode channel ratio(NCR)of the rhizosphere soil.[Conclusion]In conclusion,the study has found that interplanting ofA. lanceawith peanut can increase diversity of the nematodes community,and improve its structure of the nematodes in peanut fields under monoculture,and further on,strengthen ecological function of beneficial nematode and mitigate the obstacle for monocropping of peanut.关键词
茅苍术间作/花生连作/土壤线虫/多样性/群落结构Key words
Interplanting ofAtractylodes lancea/Continuous monocropping of peanut/Soil nematodes/Diversity/Community structure分类
农业科技引用本文复制引用
张亚楠,李孝刚,王兴祥..茅苍术间作对连作花生土壤线虫群落的影响[J].土壤学报,2016,53(6):1497-1505,9.基金项目
国家自然科学基金项目（41371290,41671306）和江西省赣鄱英才555工程专项资助 Supported by the National Natural Science Foundation of China（Nos.41371290,41671306）and the GanPo 555 Talents Program of Jiangxi Province, China （）
