In situ assessment of new carbon and nitrogen assimilation and allocation in contrastingly managed dryland wheat crop-soil systems

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• 作者：Yunying Fang^a ; Bhupinder Pal Singh^a ; ^{bp.singh@dpi.nsw.gov.au} ; Warwick Badgery^b ; Xinhua He^a ; ¹
• 关键词：Isotope ; Pulse labelling ; Tillage ; Soil respiration ; Soil aggregation ; Cropping
• 刊名：Agriculture, Ecosystems & Environment
• 出版年：2016
• 出版时间：1 November 2016
• 年：2016
• 卷：235
• 期：Complete
• 页码：80-90
• 全文大小：660 K
• 卷排序：235

文摘

Field-based 13C-15N labelling to investigate C and N allocation in crop–soil pools. Tillage practices in a dryland mixed farming did not influence C and N allocation. Only a small proportion (4–5%) of plant-assimilated C was allocated belowground. Only a small proportion (0.5–0.7%) of soil 15N tracer was allocated aboveground. Soil and agronomic functionality were similar across contrasting tillage systems.