Improving nitrogen fertilization in rice by site-specific N management. A review
文献类型：SCI/SSCI论文
| 作者 | Peng S. B. ; Buresh R. J. ; Huang J. L. ; Zhong X. H. ; Zou Y. B. ; Yang J. C. ; Wang G. H. ; Liu Y. Y. ; Hu R. F. ; Tang Q. Y. ; Cui K. H. ; Zhang F. S. ; Dobermann A. |
| 发表日期 | 2010 |
| 关键词 | site-specific nitrogen management nitrogen use efficiency grain yield nitrogen response rice China irrigated rice use efficiency nutrient management chlorophyll meter sheath blight systems china yield asia |
| 英文摘要 | Excessive nitrogen (N) application to rice (Oryza sativa L.) crop in China causes environmental pollution, increases the cost of rice farming, reduces grain yield and contributes to global warming. Scientists from the International Rice Research Institute have collaborated with partners in China to improve rice N fertilization through site-specific N management (SSNM) in China since 1997. Field experiments and demonstration trials were conducted initially in Zhejiang province and gradually expanded to Guangdong, Hunan, Jiangsu, Hubei and Heilongjiang provinces. On average, SSNM reduced N fertilizer by 32% and increased grain yield by 5% compared with farmers' N practices. The yield increase was associated with the reduction in insect and disease damage and improved lodging resistance of rice crop under the optimal N inputs. The main reason for poor fertilizer N use efficiency of rice crop in China is that most rice farmers apply too much N fertilizer, especially at the early vegetative stage. We observed about 50% higher indigenous N supply capacity in irrigated rice fields in China than in other major rice-growing countries. Furthermore, yield response of rice crop to N fertilizer application is low in China, around 1.5 t ha(-1) on average. However, these factors were not considered by rice researchers and extension technicians in determining the N fertilizer rate for recommendation to rice farmers in China. After a decade of research on SSNM in China and other Asian rice-growing countries, we believe SSNM is a matured technology for improving both fertilizer N use efficiency and grain yield of rice crop. Our challenges are to further simplify the procedure of SSNM and to convince policy-makers of the effectiveness of this technology in order to facilitate a wider adoption of SSNM among rice farmers in China. |
| 出处 | Agronomy for Sustainable Development |
| 卷 | 30 |
| 期 | 3 |
| 页 | 649-656 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1774-0746 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23208]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Peng S. B.,Buresh R. J.,Huang J. L.,et al. Improving nitrogen fertilization in rice by site-specific N management. A review. 2010. |
入库方式： OAI收割
来源：地理科学与资源研究所
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