Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.fcr.2012.12.005 |
Grain yield and soil respiratory response to intercropping systems on arid land | |
Qin, An-zhen1,2; Huang, Gao-bao1; Chai, Qiang1,2; Yu, Ai-zhong1; Huang, Peng2 | |
通讯作者 | Chai, Qiang |
来源期刊 | FIELD CROPS RESEARCH |
ISSN | 0378-4290 |
出版年 | 2013 |
卷号 | 144页码:1-10 |
英文摘要 | Intercropping systems have been shown to boost crop productivity and provide potential for biodiversity in the development of sustainable agriculture, but little is known about the effect of intercropping on soil respiratory responses and CO2 regulations. This study determined grain yields, soil respiration (R-s) rates and their relationships to soil temperatures (T-s), dry matter (DM) accumulation, and carbon emission (CE) for maize (Zea mays L.)-pea (Pisum sativum L) and maize-wheat (Triticum aestivum L) intercropping, in comparison with sole pea, sole wheat, and sole maize, in an arid environment. Field experiments were conducted at Wuwei Experimental Station in 2009-2011. Maize produced the greatest grain yield at 11,724 kg ha(-1), followed by wheat averaging at 6467 kg ha(-1), and pea the lowest at 2830 kg ha(-1). Sole maize had the grain yield decreased from 12,677 kg ha(-1) in 2009 to 10,624 kg ha(-1) in 2011, or by 19%, whereas the maize in the maize-wheat intercropping had its grain yield increased from 7404 kg ha(-1) in 2009 to 8123 kg ha(-1) in 2011, or by 10%. Maize-based intercropping had significant yield advantages over sole wheat and sole pea, with maize-wheat and maize-pea having land equivalent ratio of 1.2-1.5. Diurnal R-s had a single peak occurring from 12:00 to 14:00 h during a day, whereas seasonal R-s changed from seedling to maturity with R-s reaching the peak in June or July. A quadratic function for DM combined with an exponential function for T-s was used to fit the measured results, showing the combination of DM and T-s accounted for 24-45% of the R-s variation. Sole maize was the highest carbon emitter, averaging 4233 kg C ha(-1) per year, and sole pea the least emitter, averaging 1448 kg C ha(-1) per year. Across the three years, the maize-wheat system had an average carbon emission (CE) of 2888 kg C ha(-1), or 47% less compared to sole maize; the maize-pea system had CE of 2635 kg C ha(-1), or 61% less compared to sole maize. Adoption of intercropping systems especially the inclusion of a legume like pea is an effective approach to increase crop productivity, reduce soil respiration, and lower carbon emission in arid lands. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved. |
英文关键词 | Carbon emission Dry matter Soil temperature Agro-ecosystems Northwest China |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000317876600001 |
WOS关键词 | CANADIAN PRAIRIE ; CARBON FOOTPRINT ; USE EFFICIENCY ; WHEAT ; MAIZE ; FOREST ; EMISSIONS ; CHINA ; RHIZOSPHERE ; TEMPERATURE |
WOS类目 | Agronomy |
WOS研究方向 | Agriculture |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/177122 |
作者单位 | 1.Gansu Prov Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China; 2.Gansu Agr Univ, Coll Agron, Lanzhou 730070, Peoples R China |
推荐引用方式 GB/T 7714 | Qin, An-zhen,Huang, Gao-bao,Chai, Qiang,et al. Grain yield and soil respiratory response to intercropping systems on arid land[J],2013,144:1-10. |
APA | Qin, An-zhen,Huang, Gao-bao,Chai, Qiang,Yu, Ai-zhong,&Huang, Peng.(2013).Grain yield and soil respiratory response to intercropping systems on arid land.FIELD CROPS RESEARCH,144,1-10. |
MLA | Qin, An-zhen,et al."Grain yield and soil respiratory response to intercropping systems on arid land".FIELD CROPS RESEARCH 144(2013):1-10. |
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