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畜牧系统中氮素平衡计算参数的探讨

刘晓利1,2;许俊香1;王方浩2;张福锁2;马文奇1   

  1. 1河北农业大学资源与环境科学学院, 保定 071001;2中国农业大学资源与环境学院植物-土壤相互作用教育部重点实验室,北京 100094

  • 收稿日期:2005-03-07 修回日期:2005-07-04 出版日期:2006-03-18 发布日期:2006-03-18

Estimation parameters of nitrogen balance in stock farming system of China

LIU Xiaoli1,2;XU Junxiang1;WANG Fanghao2;ZHANG Fusuo2;MA Wenqi1   

  1. 1College of Resources and Environmental Sciences,Agricultural University of Hebei,Baoding 071001,China;2Key Laboratory of Plant-Soil Interactions, MOE,College of Resources and Environmental Sciences,China Agricultural University,Beijing 100094,China

  • Received:2005-03-07 Revised:2005-07-04 Online:2006-03-18 Published:2006-03-18

摘要: 畜牧系统中N流动与平衡的研究是畜牧业进行养分资源管理的基础,而参数的确定又是研究养分循环与平衡的基础工作.本研究对该系统的N输入、输出项参数进行分析讨论,包括平衡计算中每一个输入和输出项需要的参数种类、参数的选择以及建议采用的数值.讨论过程参考了大量的文献资料和统计数据,初步确定了我国畜牧系统N养分平衡计算参数.

关键词: 灌丛化, 荒漠草原, 土壤有机碳, 空间预测, 人工灌丛

Abstract: The study of nitrogen (N) balance in stock farming system is the basis of nutrient management in animal husbandry production,and the determination of N cycling parameters is the foundation of this study.Through documents checking and data collecting,this paper analyzed the items and values of input/output parameters of N cycling in stock farming system,and ascertained the estimation parameters of N balance in the system,which could offer the theoretical foundation for nutrient management in animal husbandry production.

Key words: soil organic carbon, desert grassland, anthropogenically introduced shrub, shrub encroachment., spatial prediction