EFFECTS OF MAIZE-SOYBEAN INTERCROPPING ON SOIL RESPIRATION

文献类型: 外文期刊

第一作者: Cui, Jingjing

作者: Cui, Jingjing;Zhang, Quanguo;Yu, Lingling;Tanveer, Sikander khan;Zhao, Guiyuan;Guo, Qiang;Zhang, Quanguo;Zhao, Guiyuan;Yu, Lingling;Tanveer, Sikander khan

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关键词: Maize-soybean intercropping; Soil CO2 emission rate; Carbon balance

期刊名称:BANGLADESH JOURNAL OF BOTANY ( 影响因子:0.3; 五年影响因子:0.4 )

ISSN: 0253-5416

年卷期: 2025 年 54 卷 1 期

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收录情况: SCI

摘要: Adopting appropriate cropping systems is an effective way to reduce greenhouse gas (GHG) emission, meanwhile GHG emission from farmland is a hot topic recently. In recent years, maize-soybean intercropping has been promoted in many regions in China. To explore the effects of maize-soybean intercropping on soil CO2 emission and carbon balance, we established three planting methods, namely, maize monoculture (M), soybean monoculture (S), and maize-soybean intercropping (MS). Results showed that the cumulative emissions of soil CO2 were M (21231 kghm(-2)) > S (19715 kghm(-2)) > MS (17321 kghm(-2)). The two-factor composite model of soil temperature and moisture content could explain the variation in soil CO(2 )emission rate well, which reached 58.36-68.54%. Correlation analysis showed that the soil CO2 emission rate was significantly correlated with peroxidase activity (P < 0.01). The soil carbon balance was favorable under different treatments, serving as a sink for atmospheric carbon. The soil carbon sequestration potential of M and MS treatments was significantly higher than that of S treatment (P<0.05), with increases of 37.11 and 34.02%, respectively. These results indicated that M and MS treatments had strong carbon sequestration potential . M treatment exhibited superior soil carbon balance compared with MS and S treatments, with increases of 29.80 and 359.31%, respectively. Therefore, maize treatment was a better planting method compared with soybean and maize-soybean treatments.

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