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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (5): 93-97.doi: 10.11924/j.issn.1000-6850.casb19010134

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Nitrogen Fertilizer Use Efficiency: Research Progress

Wang Xiangling, Song Baiquan()   

  1. Heilongjiang University/Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region, School of Life Sciences, Heilongjiang University/Key Laboratory of Sugar Beet Genetics and Breeding, Heilongjiang Province Common College/Sugar Beet Engineering Research Center of Heilongjiang Province, Harbin 150080
  • Received:2019-01-27 Revised:2019-03-13 Online:2020-02-15 Published:2020-02-21
  • Contact: Song Baiquan E-mail:13212929229@163.com

Abstract:

The aim is to provide a scientific basis for improving crop nitrogen fertilizer use efficiency, reducing resource waste, decreasing environmental pollution and increasing crop yield. This study reviews the research results of nitrogen fertilizer use efficiency in recent years at home and abroad, and analyzes the research history, current status and existing problems of nitrogen fertilizer use efficiency from the research methods and the influencing factors of nitrogen use efficiency. It is concluded that the nitrogen fertilizer use efficiency in China was low, and lack of scientific in fertilization, such as the excessive application of nitrogen fertilizer, the serious nitrogen fertilizer volatilization and nitrification and denitrification loss, the inconsistent fertilization period and application rate with the nitrogen absorption rule of crops, and the comparatively simple fertilizer varieties and so on. It is recommended to combine the formula fertilization by soil testing, real-time supervision to reasonably determine the type, amount, application methods and fertilizing period, strengthen development and extension of new technologies such as new type of fertilizer and fertilizer synergists, and highlight the mining and application of crop nitrogen efficient variety resources, thus to improve nitrogen use efficiency from various aspects such as soil, fertilizer, variety and management methods.

Key words: nitrogen fertilizer use efficiency, influencing factors, improving ways, nitrogen amount, soil nutrient

CLC Number: