Effect of intercropping on crop yield and chemical and microbiological properties in rhizosphere of wheat (Triticum aestivum L.), maize (Zea mays L.), and faba bean (Vicia faba L.)
文献类型: 外文期刊
作者: Song, Y. N. 1 ; Zhang, F. S. 2 ; Marschner, P. 2 ; Fan, F. L. 2 ; Gao, H. M. 3 ; Bao, X. G.; Sun, J. H.; Li, L.;
作者机构: 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100094, Peoples R China
2.China Agr Univ, Coll Resources & Environm Sci, Beijing 100094, Peoples R China; Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5005, Australia; Gansu Acad Agr Sci, Inst Soils & Fertilizers, Lanzhou 730000, Peoples R China; Fujian Acad Agr Sci, Inst Biotechnol, Fuzhou 350003, Peoples R China
3.China Agr Univ, Coll Resources & Environm Sc
关键词: bacterial community composition;intercropping;microbial biomass;PCR-DGGE;rhizosphere
期刊名称:BIOLOGY AND FERTILITY OF SOILS ( 影响因子:6.432; 五年影响因子:6.332 )
ISSN: 0178-2762
年卷期: 2007 年 43 卷 5 期
页码:
收录情况: SCI
摘要: In this study, we investigated crop yield and various chemical and microbiological properties in rhizosphere of wheat, maize, and faba bean grown in the field solely and intercropped (wheat/faba bean, wheat/maize, and maize/faba bean) in the second and third year after establishment of the cropping systems. In both years, intercropping increased crop yield, changed N and P availability, and affected the microbiological properties in rhizosphere of the three species compared to sole cropping. Generally, intercropping increased microbial biomass C, N, and P availability, whereas it reduced microbial biomass N in rhizosphere of wheat. The rhizosphere bacterial community composition was studied by denaturing gradient gel electrophoresis of 16S rRNA. In the third year of different cropping systems, intercropping significantly changed bacterial community composition in rhizosphere compared with sole cropping, and the effects were most pronounced in the wheat/faba bean intercropping system. The effects were less pronounced in the second year. The results show that intercropping has significant effects on microbiological and chemical properties in the rhizosphere, which may contribute to the yield enhancement by intercropping.
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Community composition of ammonia-oxidizing bacteria in the rhizosphere of intercropped wheat (Triticum aestivum L.), maize (Zea mays L.), and faba bean (Vicia faba L.)
作者:Song, Y. N.;Marschner, P.;Li, L.;Bao, X. G.;Sun, J. H.;Zhang, F. S.
关键词:ammonia-oxidizing bacteria;community composition;intercropping;PCR-DGGE;rhizosphere