摘要
弄清中国不同区域农田养分投入、产出和平衡状况,对养分资源管理和肥料的科学分配与施用,提高肥料利用效率等具有重要意义。在参考现有资料的基础上,系统分析和论述了中国的养分资源及其利用现状,估算了各种有机肥资源及其可提供的氮磷钾养分数量,分析和评价了中国不同区域养分输入、输出特点及平衡状况。针对目前养分输入、输出存在的一系列问题,提出了养分资源管理的对策和建议。
Clearance of nutrient input/output and balance in farmland in different regions of China is critical for nutrient management,scientific distribution and application of fertilizer resources,and improving nutrient use efficiency,etc.Based on existed literatures this paper systematically analyzed and discussed the current nutrient resources and application status,estimated the amount of manures,crop straws and their potential amount of nutrients NPK.The characteristics of nutrient input,output and balance in different regions of China were analyzed and evaluated.Strategies and suggestions on nutrient management were discussed based on the existed issues of nutrient input and output.
出处
《中国农业科学》
CAS
CSCD
北大核心
2011年第20期4207-4229,共23页
Scientia Agricultura Sinica
基金
国家重点基础研究发展计划课题(2007CB109308)
关键词
养分资源
养分输入
养分输出
养分平衡
nutrient resources
nutrient input
nutrient output
nutrient balance
