Effects of N Management on Yield and N Uptake of Rice in Central China
Efficient N fertilizer management is critical for the economic production of rice and the long-term protection of environmental quality. A field experiment was designed to study the effects of N fertilizer management practices on grain yield and N uptake of rice. The experiment was laid out in the r...
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KeAi Communications Co., Ltd.
2012-12-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311912604560 |
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| author | Sheng-gang PAN Sheng-qi HUANG Jing ZHAI Jing-ping WANG Cou-gui CAO Ming-li CAI Ming ZHAN Xiang-ru TANG |
| author_facet | Sheng-gang PAN Sheng-qi HUANG Jing ZHAI Jing-ping WANG Cou-gui CAO Ming-li CAI Ming ZHAN Xiang-ru TANG |
| author_sort | Sheng-gang PAN |
| collection | DOAJ |
| description | Efficient N fertilizer management is critical for the economic production of rice and the long-term protection of environmental quality. A field experiment was designed to study the effects of N fertilizer management practices on grain yield and N uptake of rice. The experiment was laid out in the randomized complete block design with four replications in Central China during 2008 and 2009. Five N treatments denoted as N0, N150A, N150B, N240A, and N240B, respectively, were studied. N0 represented no N application and served as a control, N150A and N150B indicated the total N application of 150 kg N ha−1 but with two different application schedules (A and B) across the early stage of rice growth. Schedule A was applied as follows: 40% basal, 30% at 10 d after transplanting (DAT) and 30% at 36 DAT (nearly at the panicle initiation stage), while schedule B was as follows: 30% at basal, 20% at 10 DAT, and 50% at 36 DAT. Similarly, N240A and N240B indicated the total N application of 240 kg N ha−1 with schedules A and B as described above. To quantify N uptake from fertilizer and soil, a 15N experiment was also conducted within the main experimental field, with micro-plots. Grain yields were significantly increased as N rates increased from 0 to 240 kg N ha−1. At the same rate, splitting N application as schedule B significantly increased the grain yield, spikelets per panicle, percentage of ripened grain, and 1 000-grain weight, compared with the N application according to schedule A. Mean rice recovery of N fertilizer by 15N tracing method ranged from 25.39% at N240A to 34.89% at N150B, however, N fertilizer residual rate in the soil ranged from 12.40% at N240A to 16.61% at N150B. About 31.5 and 28.5% of total uptake of 15N derived from basal fertilizer was absorbed at panicle initiation and heading stages, respectively. However, 65.6-92.5% of total uptake of 15N derived from topdressing fertilizer was absorbed at the heading stage. Based on yield and nitrogen recovery efficiency, splitting N application according to schedule B at the rate of 240 kg N ha−1 will be more profitable among the tested five N treatments in Central China. |
| format | Article |
| id | doaj-art-4ff5ef6a6aa14cedb2e96e55194d2dbc |
| institution | Matheson Library |
| issn | 2095-3119 |
| language | English |
| publishDate | 2012-12-01 |
| publisher | KeAi Communications Co., Ltd. |
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| series | Journal of Integrative Agriculture |
| spelling | doaj-art-4ff5ef6a6aa14cedb2e96e55194d2dbc2025-08-02T07:43:12ZengKeAi Communications Co., Ltd.Journal of Integrative Agriculture2095-31192012-12-01111219932000Effects of N Management on Yield and N Uptake of Rice in Central ChinaSheng-gang PAN0Sheng-qi HUANG1Jing ZHAI2Jing-ping WANG3Cou-gui CAO4Ming-li CAI5Ming ZHAN6Xiang-ru TANG7Key Laboratory of Huazhong Crop Physiology, Ecology and Production, Ministry of Agriculture/College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China; College of Agriculture, South China Agricultural University, Guangzhou 510642, P.R. China; PAN Sheng-gangKey Laboratory of Huazhong Crop Physiology, Ecology and Production, Ministry of Agriculture/College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaKey Laboratory of Huazhong Crop Physiology, Ecology and Production, Ministry of Agriculture/College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaKey Laboratory of Huazhong Crop Physiology, Ecology and Production, Ministry of Agriculture/College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaKey Laboratory of Huazhong Crop Physiology, Ecology and Production, Ministry of Agriculture/College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China; Correspondence CAO Cou-gui, Tel: +86-27-87283775Key Laboratory of Huazhong Crop Physiology, Ecology and Production, Ministry of Agriculture/College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaKey Laboratory of Huazhong Crop Physiology, Ecology and Production, Ministry of Agriculture/College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaCollege of Agriculture, South China Agricultural University, Guangzhou 510642, P.R. ChinaEfficient N fertilizer management is critical for the economic production of rice and the long-term protection of environmental quality. A field experiment was designed to study the effects of N fertilizer management practices on grain yield and N uptake of rice. The experiment was laid out in the randomized complete block design with four replications in Central China during 2008 and 2009. Five N treatments denoted as N0, N150A, N150B, N240A, and N240B, respectively, were studied. N0 represented no N application and served as a control, N150A and N150B indicated the total N application of 150 kg N ha−1 but with two different application schedules (A and B) across the early stage of rice growth. Schedule A was applied as follows: 40% basal, 30% at 10 d after transplanting (DAT) and 30% at 36 DAT (nearly at the panicle initiation stage), while schedule B was as follows: 30% at basal, 20% at 10 DAT, and 50% at 36 DAT. Similarly, N240A and N240B indicated the total N application of 240 kg N ha−1 with schedules A and B as described above. To quantify N uptake from fertilizer and soil, a 15N experiment was also conducted within the main experimental field, with micro-plots. Grain yields were significantly increased as N rates increased from 0 to 240 kg N ha−1. At the same rate, splitting N application as schedule B significantly increased the grain yield, spikelets per panicle, percentage of ripened grain, and 1 000-grain weight, compared with the N application according to schedule A. Mean rice recovery of N fertilizer by 15N tracing method ranged from 25.39% at N240A to 34.89% at N150B, however, N fertilizer residual rate in the soil ranged from 12.40% at N240A to 16.61% at N150B. About 31.5 and 28.5% of total uptake of 15N derived from basal fertilizer was absorbed at panicle initiation and heading stages, respectively. However, 65.6-92.5% of total uptake of 15N derived from topdressing fertilizer was absorbed at the heading stage. Based on yield and nitrogen recovery efficiency, splitting N application according to schedule B at the rate of 240 kg N ha−1 will be more profitable among the tested five N treatments in Central China.http://www.sciencedirect.com/science/article/pii/S209531191260456015NN fateN managementrecoveryrice |
| spellingShingle | Sheng-gang PAN Sheng-qi HUANG Jing ZHAI Jing-ping WANG Cou-gui CAO Ming-li CAI Ming ZHAN Xiang-ru TANG Effects of N Management on Yield and N Uptake of Rice in Central China Journal of Integrative Agriculture 15N N fate N management recovery rice |
| title | Effects of N Management on Yield and N Uptake of Rice in Central China |
| title_full | Effects of N Management on Yield and N Uptake of Rice in Central China |
| title_fullStr | Effects of N Management on Yield and N Uptake of Rice in Central China |
| title_full_unstemmed | Effects of N Management on Yield and N Uptake of Rice in Central China |
| title_short | Effects of N Management on Yield and N Uptake of Rice in Central China |
| title_sort | effects of n management on yield and n uptake of rice in central china |
| topic | 15N N fate N management recovery rice |
| url | http://www.sciencedirect.com/science/article/pii/S2095311912604560 |
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