Journal of Integrative Agriculture ›› 2012, Vol. 12 ›› Issue (6): 1026-1037.DOI: 10.1016/S1671-2927(00)8627

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Xanthium Suppression Under Maize||Sunflower Intercropping System

 CHEN Yuan-quan, LUAN Chen, SHI Xue-peng   

  1. College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China
  • 收稿日期:2011-04-07 出版日期:2012-06-01 发布日期:2012-07-20
  • 通讯作者: CHEN Yuan-quan, Tel/Fax: +86-10-62731163, E-mail: rardc@163.com
  • 基金资助:

    This work was supported by the National Key Technologies R&D Program of China during the 11th Five-Year Plan period (2007BAD89B01).

Xanthium Suppression Under Maize||Sunflower Intercropping System

 CHEN Yuan-quan, LUAN Chen, SHI Xue-peng   

  1. College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China
  • Received:2011-04-07 Online:2012-06-01 Published:2012-07-20
  • Contact: CHEN Yuan-quan, Tel/Fax: +86-10-62731163, E-mail: rardc@163.com
  • Supported by:

    This work was supported by the National Key Technologies R&D Program of China during the 11th Five-Year Plan period (2007BAD89B01).

摘要: Weed control is one of the major constraint factors in crop production around the world. Field experiments were conducted during 2008-2009 under intercropping systems involving alfalfa (Medicago sativa L.), sweet potato (Ipomoea batatas [L.] Lam.), peanut (Arachis hypogaea L.), and sunflower (Helianthus annuus L.) in maize (Zea mays L.) without any weeds control methods taken. The results demonstrate that maize||sunflower is most effective on weed suppression and that it also has a more competitively inhibitory effect on Xanthium compared with the other patterns by evaluating the Xanthium density and dry weight under different intercropping systems with maize. Maize||peanut, maize||alfalfa and maize||sweet potato intercrops have no apparent inhibitory effect on weeds. To further investigate the effect of maize||sunflower on weed control, indoor pot experiments were conducted by determining the effect of extractions on germination rate (GR), root vigor, MDA (malondialdehyde), SOD (superoxide dismutase) and POD (peroxidase) content of Xanthium. The results better prove that maize||sunflower extractions have more significant inhibitory effect on GR and young root vigor of Xanthium than maize monocrop extractions.

关键词: maize, sunflower, Xanthium, intercropping, weed suppression

Abstract: Weed control is one of the major constraint factors in crop production around the world. Field experiments were conducted during 2008-2009 under intercropping systems involving alfalfa (Medicago sativa L.), sweet potato (Ipomoea batatas [L.] Lam.), peanut (Arachis hypogaea L.), and sunflower (Helianthus annuus L.) in maize (Zea mays L.) without any weeds control methods taken. The results demonstrate that maize||sunflower is most effective on weed suppression and that it also has a more competitively inhibitory effect on Xanthium compared with the other patterns by evaluating the Xanthium density and dry weight under different intercropping systems with maize. Maize||peanut, maize||alfalfa and maize||sweet potato intercrops have no apparent inhibitory effect on weeds. To further investigate the effect of maize||sunflower on weed control, indoor pot experiments were conducted by determining the effect of extractions on germination rate (GR), root vigor, MDA (malondialdehyde), SOD (superoxide dismutase) and POD (peroxidase) content of Xanthium. The results better prove that maize||sunflower extractions have more significant inhibitory effect on GR and young root vigor of Xanthium than maize monocrop extractions.

Key words: maize, sunflower, Xanthium, intercropping, weed suppression