Reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency: A case study in east China
Dense planting could be a feasible method for reducing nitrogen (N) application rates without compromising rice grain yield in northeast and central China. It is still unclear whether reduced N application with dense planting (RNDP) can achieve higher rice yield and N use efficiency (NUE) in Jiangsu...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-08-01
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| Series: | Crop Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514120301872 |
| _version_ | 1818718583883038720 |
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| author | Huanhe Wei Tianyao Meng Jialin Ge Xubin Zhang Tianyi Shi Enhao Ding Yu Lu Xinyue Li Yuan Tao Yinglong Chen Min Li Qigen Dai |
| author_facet | Huanhe Wei Tianyao Meng Jialin Ge Xubin Zhang Tianyi Shi Enhao Ding Yu Lu Xinyue Li Yuan Tao Yinglong Chen Min Li Qigen Dai |
| author_sort | Huanhe Wei |
| collection | DOAJ |
| description | Dense planting could be a feasible method for reducing nitrogen (N) application rates without compromising rice grain yield in northeast and central China. It is still unclear whether reduced N application with dense planting (RNDP) can achieve higher rice yield and N use efficiency (NUE) in Jiangsu, east China. Three japonica inbred rice (JI) and three indica hybrid rice (IH) cultivars were grown in a field experiment. Their grain yield, NUE, and related traits were compared under two cultivation treatments: conventional high-yielding practice (CHYP) and RNDP. JI showed similar yields under the two treatments, while IH showed lower yield under RNDP than under CHYP, and the partial factor productivity of N and N use efficiency for grain yield increased (P < 0.05) in both JI and IH under RNDP. Compared with CHYP, RNDP reduced spikelets per panicle but increased panicles per m2 and filled-kernel percentage of JI and IH, and JI’s kernel weight was increased (P < 0.05) under RNDP. Shoot biomass weight and nonstructural carbohydrate (NSC) content in the stem at heading and maturity of JI and IH were reduced under RNDP, while harvest index and NSC remobilization reserve were increased (P < 0.05) under RNDP, especially for JI. Our results suggest that RNDP could achieve a higher rice grain yield and NUE, particularly for JI, a dominant rice cultivar type in Jiangsu. For JI, the increased panicles per m2, sink-filling efficiency, harvest index, and NSC remobilization after heading under RNDP contributed to a grain yield similar to that under CHYP. |
| first_indexed | 2024-12-17T19:53:22Z |
| format | Article |
| id | doaj.art-793722cd741541f194410fa4ed23e55f |
| institution | Directory Open Access Journal |
| issn | 2214-5141 |
| language | English |
| last_indexed | 2024-12-17T19:53:22Z |
| publishDate | 2021-08-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Crop Journal |
| spelling | doaj.art-793722cd741541f194410fa4ed23e55f2022-12-21T21:34:40ZengKeAi Communications Co., Ltd.Crop Journal2214-51412021-08-0194954961Reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency: A case study in east ChinaHuanhe Wei0Tianyao Meng1Jialin Ge2Xubin Zhang3Tianyi Shi4Enhao Ding5Yu Lu6Xinyue Li7Yuan Tao8Yinglong Chen9Min Li10Qigen Dai11Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaInstitutes of Agricultural Science and Technology Development/Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, ChinaRice Research Institute of Guizhou, Guiyang 550006, Guizhou, ChinaJiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, China; Institutes of Agricultural Science and Technology Development/Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, Jiangsu, China; Corresponding author.Dense planting could be a feasible method for reducing nitrogen (N) application rates without compromising rice grain yield in northeast and central China. It is still unclear whether reduced N application with dense planting (RNDP) can achieve higher rice yield and N use efficiency (NUE) in Jiangsu, east China. Three japonica inbred rice (JI) and three indica hybrid rice (IH) cultivars were grown in a field experiment. Their grain yield, NUE, and related traits were compared under two cultivation treatments: conventional high-yielding practice (CHYP) and RNDP. JI showed similar yields under the two treatments, while IH showed lower yield under RNDP than under CHYP, and the partial factor productivity of N and N use efficiency for grain yield increased (P < 0.05) in both JI and IH under RNDP. Compared with CHYP, RNDP reduced spikelets per panicle but increased panicles per m2 and filled-kernel percentage of JI and IH, and JI’s kernel weight was increased (P < 0.05) under RNDP. Shoot biomass weight and nonstructural carbohydrate (NSC) content in the stem at heading and maturity of JI and IH were reduced under RNDP, while harvest index and NSC remobilization reserve were increased (P < 0.05) under RNDP, especially for JI. Our results suggest that RNDP could achieve a higher rice grain yield and NUE, particularly for JI, a dominant rice cultivar type in Jiangsu. For JI, the increased panicles per m2, sink-filling efficiency, harvest index, and NSC remobilization after heading under RNDP contributed to a grain yield similar to that under CHYP.http://www.sciencedirect.com/science/article/pii/S2214514120301872Japonica inbred riceGrain yieldNitrogen use efficiencyReduced nitrogen rateDense planting |
| spellingShingle | Huanhe Wei Tianyao Meng Jialin Ge Xubin Zhang Tianyi Shi Enhao Ding Yu Lu Xinyue Li Yuan Tao Yinglong Chen Min Li Qigen Dai Reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency: A case study in east China Crop Journal Japonica inbred rice Grain yield Nitrogen use efficiency Reduced nitrogen rate Dense planting |
| title | Reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency: A case study in east China |
| title_full | Reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency: A case study in east China |
| title_fullStr | Reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency: A case study in east China |
| title_full_unstemmed | Reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency: A case study in east China |
| title_short | Reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency: A case study in east China |
| title_sort | reduced nitrogen application rate with dense planting improves rice grain yield and nitrogen use efficiency a case study in east china |
| topic | Japonica inbred rice Grain yield Nitrogen use efficiency Reduced nitrogen rate Dense planting |
| url | http://www.sciencedirect.com/science/article/pii/S2214514120301872 |
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