Capitalizing on multi-element interactions through balanced nutrition - A pathway to improve nitrogen use efficiency in

A viable option for increasing nitrogen (N) use efficiency and mitigation of negative impacts of N on the environment is to capitalize on multi-element interactions through implementation of nutrient management programs that provide balanced nutrition. Numerous studies have demonstrated the immediate efficacy of this approach in the developing regions like China and India as well as developed countries in North America. Based on 241 site-years of experiments in these countries, the first-year N recovery efficiency (RE) for the conventional or check treatments averaged 21% while the balanced treatments averaged 54% RE, for an average increase of 33% in RE due to balanced nutrition. Effective policies to promote adoption are most likely those that enable site-specific approaches to nutrient management decisions rather than sweeping, nation-wide incentives supporting one nutrient over another. Local farmers, advisers and officials need to be empowered with tools and information to help them define necessary changes in practices to create more balanced nutrient management.

作 者： Paul E. Fixen JIN Jiyun K. N. Tiwari Mark D. Stauffer   作者單位： Paul E. Fixen(Potash & Phosphate Institute, Brookings, SD 57006, USA)

JIN Jiyun(Soil & Fertilizer Institute, Chinese Academy of Sciences, Beijing 100081, China)

K. N. Tiwari(133, Sector 23, P.O. Palam Vihar, Gurgaon-122 017, Haryana, India)

Mark D. Stauffer(Potash & Phosphate Institute of Canada, Midtown Plaza, SK S7K 1J5, Canada) 

刊 名： 中國科學C輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA SERIES C (LIFE SCIENCES)  年，卷(期)： 2005 48(z2)  分類號： P5  關鍵詞： capitalizing   balanced nutrition   nitrogen use efficiency