我国稻田氮肥利用率的研究进展

S154.1; 文章从施肥量、施肥模式、土壤氮素背景、养分配比以及品种角度分析我国氮肥利用率低的原因,综述近年来提高氮肥利用率的途径,主要包括传统方法的优化和组合方案,即氮肥减失与氮肥深施相结合、分次施肥与氮肥精确后移相结合、水肥调控与节水灌溉相结合以及平衡施肥与保护性耕作相结合;介绍提高氮肥利用率的四种新技术,即无损诊断、新型肥料、计算机决策支持系统和实地氮肥管理模式.并对今后提高稻田氮肥利用率进行展望....

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Bibliographic Details
Published in东北农业大学学报 Vol. 45; no. 2; pp. 116 - 122
Main Author 赵宏伟 沙汉景
Format Journal Article
LanguageChinese
Published 东北农业大学水稻研究所,哈尔滨,150030 2014
Subjects
氮肥利用率
水稻
研究进展
氮肥利用率
水稻
rice
fertilizer-nitrogen use efficiency
研究进展
research progress
Online AccessGet full text
ISSN1005-9369

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Summary:S154.1; 文章从施肥量、施肥模式、土壤氮素背景、养分配比以及品种角度分析我国氮肥利用率低的原因,综述近年来提高氮肥利用率的途径,主要包括传统方法的优化和组合方案,即氮肥减失与氮肥深施相结合、分次施肥与氮肥精确后移相结合、水肥调控与节水灌溉相结合以及平衡施肥与保护性耕作相结合;介绍提高氮肥利用率的四种新技术,即无损诊断、新型肥料、计算机决策支持系统和实地氮肥管理模式.并对今后提高稻田氮肥利用率进行展望.
Bibliography:23-1391/S
ZHAO Hongwei, SHA Hanjing（Rice Research Institute, Northeast Agricultural University, Harbin 150030, China）
The paper analyse the reasons for the low nitrogen use efficiency （NUE） in China were analyzed from the perspective of the rates of N fertilizer, fertilization methods, indigenous soil N supply and variety. Summed up research progress made internationally and domestically on the approaches to improving the NUE from two aspects of the traditional methods and modern technology. With the development of agricultural production practices, the traditional methods were optimized and assembled as minimizing N application rate with deep placement, split application with precise postponing nitrogen application, fertilizer with water-saving irrigation and balanced fertilization with conservation tillage. Simultaneously, four kinds of new technology such as non-destructive diagnosis, new fertilizer, computer decision support systems and site-specific nutrient management （SSNM） were presented. Future outlook
ISSN:1005-9369