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Zhang J, Wang J, Zhou Y, Xu L, Chen Y, Ding Y, Ning Y, Liang D, Zhang Y, Li G. Reduced basal and increased topdressing fertilizer rate combined with straw incorporation improves rice yield stability and soil organic carbon sequestration in a rice-wheat system. FRONTIERS IN PLANT SCIENCE 2022; 13:964957. [PMID: 36092398 PMCID: PMC9459092 DOI: 10.3389/fpls.2022.964957] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Fertilizer management is vital for sustainable agriculture under climate change. Reduced basal and increased topdressing fertilizer rate (RBIT) has been reported to improve the yield of in-season rice or wheat. However, the effect of RBIT on rice and wheat yield stability and soil organic carbon (SOC) sequestration potential is unknown, especially when combined with straw incorporation. Here, we report the effect of RBIT with/without straw incorporation on crop yields, yield stability, SOC stock, and SOC fractions in the lower Yangtze River rice-wheat system region over nine years. RBIT with/without straw incorporation significantly increased nine-year average and annual rice yields but not wheat yields. Compared with conventional fertilization (CF), RBIT did not significantly affect wheat or rice yield stability, but combined with straw incorporation, it increased the sustainable yield index (SYI) of wheat and rice by 7.6 and 12.8%, respectively. RBIT produced a higher C sequestration rate (0.20 Mg C ha-1 year-1) than CF (0.06 Mg ha-1 year-1) in the 0-20 cm layer due to higher root C input and lower C mineralization rate, and RBIT in combination with straw incorporation produced the highest C sequestration rate (0.47 Mg ha-1 year-1). Long-term RBIT had a greater positive effect on silt+clay (0.053 mm)-associated C, microbial biomass C (MBC), dissolved organic C, and hot water organic C in the surface layer (0-10 cm) than in the subsurface layer (10-20 cm). In particular, the increases in SOC pools and mean weight diameter (MWD) of soil aggregates were greater when RBIT was combined with straw incorporation. Correlation analysis indicated that topsoil SOC fractions and MWD were positively correlated with the SYI of wheat and rice. Our findings suggest that the long-term application of RBIT combined with straw incorporation contributed to improving the sustainability of rice production and SOC sequestration in a rice-wheat system.
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Affiliation(s)
- Jianwei Zhang
- Scientific Observing and Experimental Station of Arable Land, Ministry of Agriculture and Rural/National Agricultural Experimental Station for Agricultural Environment/Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China/Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Jidong Wang
- Scientific Observing and Experimental Station of Arable Land, Ministry of Agriculture and Rural/National Agricultural Experimental Station for Agricultural Environment/Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- School of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang, China
| | - Yan Zhou
- National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China/Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Lei Xu
- National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China/Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yinglong Chen
- The UWA Institute of Agriculture and School of Agriculture and Environment, The University of Western Australia, Perth, WA, Australia
| | - Yanfeng Ding
- National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China/Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yunwang Ning
- Scientific Observing and Experimental Station of Arable Land, Ministry of Agriculture and Rural/National Agricultural Experimental Station for Agricultural Environment/Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Dong Liang
- Scientific Observing and Experimental Station of Arable Land, Ministry of Agriculture and Rural/National Agricultural Experimental Station for Agricultural Environment/Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Yongchun Zhang
- Scientific Observing and Experimental Station of Arable Land, Ministry of Agriculture and Rural/National Agricultural Experimental Station for Agricultural Environment/Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Ganghua Li
- National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China/Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, Jiangsu, China
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Meng T, Zhang X, Chen X, Ge J, Zhou G, Wei H, Dai Q. Trends in grain quality and responses to nitrogen application of
japonica
inbred rice released after the 1980s in east China. Cereal Chem 2021. [DOI: 10.1002/cche.10512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Tianyao Meng
- 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 China
| | - Xubin Zhang
- Jiangsu 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 China
| | - Xi Chen
- 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 China
| | - Jialin Ge
- Jiangsu 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 China
| | - Guisheng Zhou
- 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 China
| | - Huanhe Wei
- Jiangsu 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 China
| | - Qigen Dai
- 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 China
- Jiangsu 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 China
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