Journal of Food, Agriculture and Environment

Advances in studies on nitrogen redundancy in winter wheat and summer maize rotation system in China

Author(s):

Bei-jing Tian ¹, Zhi-kao Sun ¹, Qi Lin ¹, Chang-xing Zhao ¹*, Xu-rong Mei ^{1, 2}*, Xiang-xia Meng ¹, Yue-fu Wang ¹, Yi-guo Liu ¹

Recieved Date: 2014-01-30, Accepted Date: 2014-03-27

Abstract:

Nitrogen is an important element affecting crop growth and yield, of which the unreasonable application leads to nitrogen accumulation in soil and decrease of economic efficiency. In this paper, focusing on winter wheat and summer maize rotation system in northern China, we briefly discuss the nitrogen absorption characteristics in the growth periods of winter wheat and summer maize, as well as the causes of nitrogen redundancy, economic analysis of nitrogen fertilization, and corresponding countermeasures. These countermeasures include proper fertilization dosage and pattern, application of long-lasting and coated nitrogen fertilizer together with phosphorus and potassium fertilizer, optimization of fertilizer mixture proportion, and screening and selection of new crop varieties with high nitrogen utilization, all of which must be used to solve the problem of nitrogen redundancy for the ultimate purpose of improving economic benefits for farmers and ensuring sustainable agricultural development.

Keywords:

China, winter wheat and summer maize, rotation system, nitrogen redundancy, countermeasures

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Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 2
Category: Agriculture
Pages: 418-422

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