EFFECTS OF MAIZE (ZEA MAYS L.) INTERCROPPING WITH LEGUMES ON NITROUS OXIDE (N2O) EMISSIONS

文献类型: 外文期刊

第一作者: Chen, J. S.

作者: Chen, J. S.;Amin, A. S.;Hamani, A. K. M.;Wang, G. S.;Zhang, Y. Y.;Gao, Y.;Chen, J. S.;Amin, A. S.;Hamani, A. K. M.;Liu, K.

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关键词: soybean; peanut; global warming potential; nitrogen rate; cumulative N2O emissions

期刊名称:APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH ( 影响因子:0.711; 五年影响因子:0.797 )

ISSN: 1589-1623

年卷期: 2021 年 19 卷 5 期

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收录情况: SCI

摘要: To investigate the effects of maize/legume intercropping on soil N2O emissions, six treatments were tested in the North China Plain: maize, M120 (N application rate 120 kg ha-1); maize, M240 (N application rate 240 kg ha-1); soybean (Glycine max), SS (120 kg ha-1); maize/soybean intercropping, MS (120 kg ha-1); peanut (Arachis hypogaea), PP (120 kg ha-1); and maize/peanut intercropping, MP (120 kg ha-1). The amounts of inorganic nitrogen for the 0-20 cm soil in MS were 24.0%, 5.3%, and 29.3% lower than in SS, M120, and M240, respectively (P < 0.05). The total N2O emissions ranged from 0.41 +/- 0.09 to 0.98 +/- 0.14 kg ha-1. MP and MS were statistically different at the 95% confidence level, whereas MP produced the least N2O emissions at 0.41 kg ha-1. The seasonal cumulative N2O emissions and global warming potential in MS and MP were also significantly lower than those in the other three monoculture treatments (P < 0.001). The results demonstrated that maize/legume intercropping can increase the N uptake of crops and reduce the amount of soil inorganic nitrogen and N2O emissions, thereby, ensuring the sustainability of the agricultural environment.

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