Influence of nitrogen rates with split application on N use efficiency and its eco-economic suitable amount analysis in rice
The effect of N fertilizer rates on N use efficiency at different growth stages of rice and its eco-economic suitable N application amount in high-yielding paddy field in Fuyang, northern Zhejiang Province were studied from 2004 to 2005. The nitrogen content of rice leaf, stem, spike, root and in so...
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| Format: | Article |
| Language: | English |
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Zhejiang University Press
2009-01-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2009.01.010 |
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| _version_ | 1849706631220166656 |
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| author | WANG Mi YANG Jing-ping XU Wei WANG Hua SUN Jun-hua |
| author_facet | WANG Mi YANG Jing-ping XU Wei WANG Hua SUN Jun-hua |
| author_sort | WANG Mi |
| collection | DOAJ |
| description | The effect of N fertilizer rates on N use efficiency at different growth stages of rice and its eco-economic suitable N application amount in high-yielding paddy field in Fuyang, northern Zhejiang Province were studied from 2004 to 2005. The nitrogen content of rice leaf, stem, spike, root and in soil was determined at different growth stage of rice under N treatments. The results show that rice yield under different N supply levels increased firstly and dropped as the N rates increase. Compared with the low N applied rate, the higher rate of N input produced no significant effect on rice yield and N use efficiency. However, more N was discharged into environment with higher N application. According to the results of N use efficiency at different growth stages of rice in two years, the proportion of nitrogenous fertilizer input should be adjusted at regreening, tillering and booting stage. According to the rice production and eco-economy benefit analysis, the application amount of N between 195-232 kg·hm<sup>-2</sup> could be better for maintaining high rice yield and minimizing N loss in paddy field. |
| format | Article |
| id | doaj-art-de383ba65c9d437db42c7041d3739a09 |
| institution | DOAJ |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-de383ba65c9d437db42c7041d3739a092025-08-20T03:16:08ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552009-01-0135717610.3785/j.issn.1008-9209.2009.01.01010089209Influence of nitrogen rates with split application on N use efficiency and its eco-economic suitable amount analysis in riceWANG MiYANG Jing-pingXU WeiWANG HuaSUN Jun-huaThe effect of N fertilizer rates on N use efficiency at different growth stages of rice and its eco-economic suitable N application amount in high-yielding paddy field in Fuyang, northern Zhejiang Province were studied from 2004 to 2005. The nitrogen content of rice leaf, stem, spike, root and in soil was determined at different growth stage of rice under N treatments. The results show that rice yield under different N supply levels increased firstly and dropped as the N rates increase. Compared with the low N applied rate, the higher rate of N input produced no significant effect on rice yield and N use efficiency. However, more N was discharged into environment with higher N application. According to the results of N use efficiency at different growth stages of rice in two years, the proportion of nitrogenous fertilizer input should be adjusted at regreening, tillering and booting stage. According to the rice production and eco-economy benefit analysis, the application amount of N between 195-232 kg·hm<sup>-2</sup> could be better for maintaining high rice yield and minimizing N loss in paddy field.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2009.01.010single-cropping riceN use efficiencyN applicationhigh-yielding paddy |
| spellingShingle | WANG Mi YANG Jing-ping XU Wei WANG Hua SUN Jun-hua Influence of nitrogen rates with split application on N use efficiency and its eco-economic suitable amount analysis in rice 浙江大学学报. 农业与生命科学版 single-cropping rice N use efficiency N application high-yielding paddy |
| title | Influence of nitrogen rates with split application on N use efficiency and its eco-economic suitable amount analysis in rice |
| title_full | Influence of nitrogen rates with split application on N use efficiency and its eco-economic suitable amount analysis in rice |
| title_fullStr | Influence of nitrogen rates with split application on N use efficiency and its eco-economic suitable amount analysis in rice |
| title_full_unstemmed | Influence of nitrogen rates with split application on N use efficiency and its eco-economic suitable amount analysis in rice |
| title_short | Influence of nitrogen rates with split application on N use efficiency and its eco-economic suitable amount analysis in rice |
| title_sort | influence of nitrogen rates with split application on n use efficiency and its eco economic suitable amount analysis in rice |
| topic | single-cropping rice N use efficiency N application high-yielding paddy |
| url | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2009.01.010 |
| work_keys_str_mv | AT wangmi influenceofnitrogenrateswithsplitapplicationonnuseefficiencyanditsecoeconomicsuitableamountanalysisinrice AT yangjingping influenceofnitrogenrateswithsplitapplicationonnuseefficiencyanditsecoeconomicsuitableamountanalysisinrice AT xuwei influenceofnitrogenrateswithsplitapplicationonnuseefficiencyanditsecoeconomicsuitableamountanalysisinrice AT wanghua influenceofnitrogenrateswithsplitapplicationonnuseefficiencyanditsecoeconomicsuitableamountanalysisinrice AT sunjunhua influenceofnitrogenrateswithsplitapplicationonnuseefficiencyanditsecoeconomicsuitableamountanalysisinrice |