Evaluation of nitrogen requirement and efficiency of rice in the region of Yangtze River Valley based on large-scale field experiments
Overestimation of nitrogen (N) uptake requirement is one of the driving forces of the overuse of N fertilization and the low efficiency of N use in China. In this study, we collected data from 1 844 site-years of rice (Oryza sativa L.) under various rotation cropping systems across the Yangtze River...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2015-10-01
|
| Series: | Journal of Integrative Agriculture |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311914609461 |
| _version_ | 1818865371118043136 |
|---|---|
| author | Ri-huan CONG Zhi ZHANG Jian-wei LU Xiao-kun LI Tao REN Wei-ni WANG |
| author_facet | Ri-huan CONG Zhi ZHANG Jian-wei LU Xiao-kun LI Tao REN Wei-ni WANG |
| author_sort | Ri-huan CONG |
| collection | DOAJ |
| description | Overestimation of nitrogen (N) uptake requirement is one of the driving forces of the overuse of N fertilization and the low efficiency of N use in China. In this study, we collected data from 1 844 site-years of rice (Oryza sativa L.) under various rotation cropping systems across the Yangtze River Valley. Selected treatments included without (N0 treatment) and with N application (N treatment) which were recommended by local technicians, with a wide grain range of 1.5–11.9 t ha−1. Across the 1 844 site-years, over 96% of the sites showed yield increase (relative yield>105%) with N fertilization, and the increase rates decreased from 78.9 to 16.2% within the lowest range <4.0 to the highest >6.5 t ha−1. To produce one ton of grain, the rice absorbed approximately 17.8 kg N in the N0 treatment and 20.4 kg N in the N treatment. The value of partial factor productivity by N (PFPN) reached a range of 35.2–51.4 kg grain kg−1 with N application under the current recommended N rate. Averaged recovery rate of N (REN) was above 36.0% in yields below 6.0 t ha−1 and lower than 31.7% in those above 6.0 t ha−1. Soil properties only affected yield increments within low rice yield levels (<5.5 t ha−1). There is a poor relationship between N application rates and indigenous nitrogen supply (INS). From these observations and considering the local INS, we concluded there was a great potential for improvement in regional grain yield and N efficiency. |
| first_indexed | 2024-12-19T10:46:29Z |
| format | Article |
| id | doaj.art-c7e4b96e83fa47b1a59a9018eefafaa3 |
| institution | Directory Open Access Journal |
| issn | 2095-3119 |
| language | English |
| last_indexed | 2024-12-19T10:46:29Z |
| publishDate | 2015-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj.art-c7e4b96e83fa47b1a59a9018eefafaa32022-12-21T20:25:15ZengElsevierJournal of Integrative Agriculture2095-31192015-10-01141020902098Evaluation of nitrogen requirement and efficiency of rice in the region of Yangtze River Valley based on large-scale field experimentsRi-huan CONG0Zhi ZHANG1Jian-wei LU2Xiao-kun LI3Tao REN4Wei-ni WANG5Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture/College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaKey Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture/College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaCorrespondence LU Jian-wei, Tel: +86-27-87288589; Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture/College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaKey Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture/College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaKey Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture/College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaKey Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture/College of Resources and Environmental Sciences, Huazhong Agricultural University, Wuhan 430070, P.R. ChinaOverestimation of nitrogen (N) uptake requirement is one of the driving forces of the overuse of N fertilization and the low efficiency of N use in China. In this study, we collected data from 1 844 site-years of rice (Oryza sativa L.) under various rotation cropping systems across the Yangtze River Valley. Selected treatments included without (N0 treatment) and with N application (N treatment) which were recommended by local technicians, with a wide grain range of 1.5–11.9 t ha−1. Across the 1 844 site-years, over 96% of the sites showed yield increase (relative yield>105%) with N fertilization, and the increase rates decreased from 78.9 to 16.2% within the lowest range <4.0 to the highest >6.5 t ha−1. To produce one ton of grain, the rice absorbed approximately 17.8 kg N in the N0 treatment and 20.4 kg N in the N treatment. The value of partial factor productivity by N (PFPN) reached a range of 35.2–51.4 kg grain kg−1 with N application under the current recommended N rate. Averaged recovery rate of N (REN) was above 36.0% in yields below 6.0 t ha−1 and lower than 31.7% in those above 6.0 t ha−1. Soil properties only affected yield increments within low rice yield levels (<5.5 t ha−1). There is a poor relationship between N application rates and indigenous nitrogen supply (INS). From these observations and considering the local INS, we concluded there was a great potential for improvement in regional grain yield and N efficiency.http://www.sciencedirect.com/science/article/pii/S2095311914609461nitrogen fertilizationyield incrementN uptake requirementN efficiencyrice |
| spellingShingle | Ri-huan CONG Zhi ZHANG Jian-wei LU Xiao-kun LI Tao REN Wei-ni WANG Evaluation of nitrogen requirement and efficiency of rice in the region of Yangtze River Valley based on large-scale field experiments Journal of Integrative Agriculture nitrogen fertilization yield increment N uptake requirement N efficiency rice |
| title | Evaluation of nitrogen requirement and efficiency of rice in the region of Yangtze River Valley based on large-scale field experiments |
| title_full | Evaluation of nitrogen requirement and efficiency of rice in the region of Yangtze River Valley based on large-scale field experiments |
| title_fullStr | Evaluation of nitrogen requirement and efficiency of rice in the region of Yangtze River Valley based on large-scale field experiments |
| title_full_unstemmed | Evaluation of nitrogen requirement and efficiency of rice in the region of Yangtze River Valley based on large-scale field experiments |
| title_short | Evaluation of nitrogen requirement and efficiency of rice in the region of Yangtze River Valley based on large-scale field experiments |
| title_sort | evaluation of nitrogen requirement and efficiency of rice in the region of yangtze river valley based on large scale field experiments |
| topic | nitrogen fertilization yield increment N uptake requirement N efficiency rice |
| url | http://www.sciencedirect.com/science/article/pii/S2095311914609461 |
| work_keys_str_mv | AT rihuancong evaluationofnitrogenrequirementandefficiencyofriceintheregionofyangtzerivervalleybasedonlargescalefieldexperiments AT zhizhang evaluationofnitrogenrequirementandefficiencyofriceintheregionofyangtzerivervalleybasedonlargescalefieldexperiments AT jianweilu evaluationofnitrogenrequirementandefficiencyofriceintheregionofyangtzerivervalleybasedonlargescalefieldexperiments AT xiaokunli evaluationofnitrogenrequirementandefficiencyofriceintheregionofyangtzerivervalleybasedonlargescalefieldexperiments AT taoren evaluationofnitrogenrequirementandefficiencyofriceintheregionofyangtzerivervalleybasedonlargescalefieldexperiments AT weiniwang evaluationofnitrogenrequirementandefficiencyofriceintheregionofyangtzerivervalleybasedonlargescalefieldexperiments |