The δ^(15)N values of foxtail millet(Setaria italica)and common millet(Panicum miliaceum)are reliable indicators of manuring practices

作     者：Jishuai YANG Xiaoyan YANG Ting YOU Fahu CHEN 

作者机构：Key Scientific Research Base of Bioarchaeology in Cold and Arid Regions(National Cultural Heritage Administration)Key Laboratory of Western China’s Environmental Systems(Ministry of Education)College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China Group of Alpine Paleoecology and Human Adaptation(ALPHA)State Key Laboratory of Tibetan Plateau Earth SystemResources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystemsCollege of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730000China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2024年第67卷第9期

页      面：2910-2923页

核心收录：

学科分类：0828[工学-农业工程] 0817[工学-化学工程与技术] 09[农学] 0703[理学-化学] 0901[农学-作物学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.41930323) 

主　　题：Millet farming Manuring experiment Farming system Archaeobotany North China 

摘      要：Millet agriculture,which originated in northern China,alongside rice agriculture,have nurtured the Chinese *** manuring practices likely promoted and maintained sustainable millet agricultural production in the loess area of northern ***,ongoing controversy exists regarding the indicators of prehistoric manuring intensity of foxtail millet(Setaria italica)and common millet(Panicum miliaceum).Here,we present the results of pot and field fertilization experiments on two millet *** findings suggest that manuring can significantly increase the δ^(15)N values of foxtail millet,and its δ^(15)N values increase with increasing manuring *** δ^(15)N values of foxtail millet leaves are systematically greater than those of grains by approximately 1.6‰.Manuring could have a long-term residual impact on increasing the δ^(15)N values of soil and millet *** with previous crop fertilization experiment results,we propose that the impact of manuring on the δ^(15)N values of non-nitrogen-fixing crops is roughly *** δ^(15)N value and amount of manure are key factors determining the extent of change in plant δ^(15)N *** millet grain δ^(15)N values can serve as reliable indicators of manuring ***,we provide an interpretive framework for assessing the correlation between manuring levels and the δ^(15)N values of archaeological millet *** δ^(15)N values of ancient millet grains suggest widespread and intensive manuring practices in prehistoric millet agriculture in northern China,spanning from the early Yangshao period to the Longshan period.