文献类型： 外文期刊

作者： Huang, Jian-xiong ¹ ; Sui, Peng ¹ ; Nie, Sheng-wei ¹ ; Gao, Wang-sheng ¹ ; Chen, Yuan-quan ¹ ;

作者机构： 1.China Agr Univ, Circular Agr Res Ctr, Beijing 100193, Peoples R China

2.Henan Acad Agr Sci, Inst Plant Nutrient & Environm Resources, Minist Agr, Natl Key Field Sci Observat Stn Zhengzhou Fluvoaq, Zhengzhou 450002, Peoples R China

关键词： Global warming;intercropping;soil respiration;sustainable agriculture

期刊名称：JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT （ 影响因子：0.435； 五年影响因子：0.484 ）

ISSN： 1459-0255

年卷期： 2013 年 11 卷 2 期

页码：

收录情况： SCI

摘要： Many studies have demonstrated that various agricultural managements can reduce soil carbon dioxide (CO2) emission and intercropping systems is beneficial (such as higher production, effective nutrient acquisition, control of soil erosion, et al.). However, few studies have investigated whether intercropping systems can decrease soil CO2 emission. We thus carried out a field experiment to compare such emissions produced by monocultural maize (M) and maize-legume intercropping systems (maize intercropped with Alfalfa (MA), and maize intercropped with Sweet Clover (MSC)) in 2010. Results showed that mean seasonal fluxes of CO2 was greater for M than that for the intercropped plots. Cumulative CO2 flux for MA was significantly reduced by 14% compared to M (6.83 t ha(-1)) (P<0.05). There were no signicant correlations between daily CO2 emission and soil temperature or moisture during the observed period under dry environmental condition (P<0.05). Grain yield was slightly higher in M than that in MA and MSC but there was no difference (P<0.05). In summary, our result indicated that appropriate maize-legume intercropping pattern could significantly reduce soil CO2 emission without grain yield loss.