Comparison of Five Nitrogen Dressing Methods to Optimize Rice Growth
The applicability of five nitrogen (N) dressing methods to rice cultivation was examined using the canopy spectrum-based nitrogen optimization algorithm (CSNOA), leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA). After b...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2014-01-01
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| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1626/pps.17.66 |
| _version_ | 1819211110082936832 |
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| author | Qingchun Chen Yongchao Tian Xia Yao Weixing Cao Yan Zhu |
| author_facet | Qingchun Chen Yongchao Tian Xia Yao Weixing Cao Yan Zhu |
| author_sort | Qingchun Chen |
| collection | DOAJ |
| description | The applicability of five nitrogen (N) dressing methods to rice cultivation was examined using the canopy spectrum-based nitrogen optimization algorithm (CSNOA), leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA). After base-tiller N dressing (basal dressing and top dressing at the tillering stage) at low and normal levels, rice plants were grown by the above five N dressing methods. The effects of different N dressing methods on plant dry weight, plant N accumulation, grain yield, N use efficiency, and economic benefit were analyzed. Compared with the standard method, under the low base-tiller N dressing level, the optimum N dressing rate was decreased, and the economic benefit was increased by adapting the N dressing methods of CSNOA and SSNM, whereas the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods. Under the general base-tiller N dressing level, the optimum N rate, N-use efficiency and economic benefit were increased by all N dressing methods except the NFOA. These results indicated that the CSNOA and SSNM were two good techniques for quantifying N dressing in rice, with higher economic benefit, less N input, and better applicability under different base-tiller N dressing levels. |
| first_indexed | 2024-12-23T06:21:51Z |
| format | Article |
| id | doaj.art-f7c35c9c5e3a4cc7a3304ef61b135571 |
| institution | Directory Open Access Journal |
| issn | 1343-943X 1349-1008 |
| language | English |
| last_indexed | 2024-12-23T06:21:51Z |
| publishDate | 2014-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj.art-f7c35c9c5e3a4cc7a3304ef61b1355712022-12-21T17:57:10ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082014-01-01171668010.1626/pps.17.6611645184Comparison of Five Nitrogen Dressing Methods to Optimize Rice GrowthQingchun Chen0Yongchao Tian1Xia Yao2Weixing Cao3Yan Zhu4Nanjing Agricultural UniversityNanjing Agricultural UniversityNanjing Agricultural UniversityNanjing Agricultural UniversityNanjing Agricultural UniversityThe applicability of five nitrogen (N) dressing methods to rice cultivation was examined using the canopy spectrum-based nitrogen optimization algorithm (CSNOA), leaf area index (LAI), site-specific N management (SSNM), N nutrition index (NNI), and N fertilizer optimization algorithm (NFOA). After base-tiller N dressing (basal dressing and top dressing at the tillering stage) at low and normal levels, rice plants were grown by the above five N dressing methods. The effects of different N dressing methods on plant dry weight, plant N accumulation, grain yield, N use efficiency, and economic benefit were analyzed. Compared with the standard method, under the low base-tiller N dressing level, the optimum N dressing rate was decreased, and the economic benefit was increased by adapting the N dressing methods of CSNOA and SSNM, whereas the optimum N dressing rate was increased, and the economic benefit was decreased by the other three N dressing methods. Under the general base-tiller N dressing level, the optimum N rate, N-use efficiency and economic benefit were increased by all N dressing methods except the NFOA. These results indicated that the CSNOA and SSNM were two good techniques for quantifying N dressing in rice, with higher economic benefit, less N input, and better applicability under different base-tiller N dressing levels.http://dx.doi.org/10.1626/pps.17.66CSNOAGrain yieldEconomic benefitNUENitrogen dressing approachPNARice |
| spellingShingle | Qingchun Chen Yongchao Tian Xia Yao Weixing Cao Yan Zhu Comparison of Five Nitrogen Dressing Methods to Optimize Rice Growth Plant Production Science CSNOA Grain yield Economic benefit NUE Nitrogen dressing approach PNA Rice |
| title | Comparison of Five Nitrogen Dressing Methods to Optimize Rice Growth |
| title_full | Comparison of Five Nitrogen Dressing Methods to Optimize Rice Growth |
| title_fullStr | Comparison of Five Nitrogen Dressing Methods to Optimize Rice Growth |
| title_full_unstemmed | Comparison of Five Nitrogen Dressing Methods to Optimize Rice Growth |
| title_short | Comparison of Five Nitrogen Dressing Methods to Optimize Rice Growth |
| title_sort | comparison of five nitrogen dressing methods to optimize rice growth |
| topic | CSNOA Grain yield Economic benefit NUE Nitrogen dressing approach PNA Rice |
| url | http://dx.doi.org/10.1626/pps.17.66 |
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