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The Scientific World Journal
Volume 2014 (2014), Article ID 239279, 11 pages
http://dx.doi.org/10.1155/2014/239279
Research Article

Regulating N Application for Rice Yield and Sustainable Eco-Agro Development in the Upper Reaches of Yellow River Basin, China

1Institute of Agro-Environment and Sustainable Development, CAAS/Key Laboratory of Agro-Environment and Climate Change, Ministry of Agriculture, Beijing 100081, China
2Ningxia Academy of Agriculture and Forestry Sciences, Ningxia 75000, China

Received 13 April 2014; Accepted 18 April 2014; Published 17 June 2014

Academic Editor: Hongbo Shao

Copyright © 2014 Aiping Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

High N fertilizer and flooding irrigation applied to rice on anthropogenic-alluvial soil often result in N leaching and low recovery of applied fertilizer N from the rice fields in Ningxia irrigation region in the upper reaches of the Yellow River, which threatens ecological environment, food security, and sustainable agricultural development. This paper reported the regulating N application for rice yield and sustainable Eco-Agro development in the upper reaches of Yellow River basin. The results showed that reducing and postponing N application could maintain crop yields while substantially reducing N leaching losses to the environment and improving the nitrogen use efficiency. Considering the high food production, the minimum environmental threat, and the low labor input, we suggested that regulating N application is an important measure to help sustainable agricultural development in this region.