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Potential yields, yield gaps, and optimal agronomic management practices for rice production systems in different regions of China
Zhang, He1,2,3; Tao, Fulu1,3; Zhou, Guangsheng2
2019-05-01
Source PublicationAGRICULTURAL SYSTEMS
ISSN0308-521X
Volume171Pages:100-112
Corresponding AuthorTao, Fulu(taofl@igsnrr.ac.cn)
AbstractUnderstanding crop potential yields, yield gaps, and optimal agronomic management practices helps in identifying the limiting factors, scope, and ways to achieve sustainable intensified agricultural production. Here, using detailed field trial data collected from 1981 to 2009 at 11 agro-meteorological experimental stations and the crop model CERES-Rice, we investigated changes in potential yields, water- and nitrogen-stressed yields, and yield gaps of rice in the major rice cultivation regions of China during the collection period. We further identified the optimal nitrogen application rate, transplanting date, and cultivar traits for the sustainable intensification of rice production systems in different regions. Owing to climate change, the potential rice yields declined or changed little in the Middle and Lower Reaches of the Yangtze River (MLRYR), while they increased or changed little in the Northeastern China Plain (NECP) during 1981-2009. Rice yield gaps shrank in the major rice production regions because the actual yields increased and approached the potential yields. The average yield gap was 16.0% in the 2000s, with water and nitrogen stresses being the limiting factors in the NECP and water stress being the major limiting factor in the MLRYR. The nitrogen application rate was suggested to be increased by 47.5% and 21.7% for single rice (i.e., rice cultivated in a single season per year) in the NECP and MLRYR, respectively, and increased by 5.2% for early rice (i.e., rice cultivated in the early season in a rice-rice rotation system per year). However, it was suggested to be reduced by 13.1% for late rice (i.e., rice cultivated in the late season in a rice-rice rotation system per year). Early transplanting could increase the yield, while late transplanting could decrease the yield. The impacts were greater for single rice in the NECP and late rice in the MLRYR than for single rice and early rice in the MLRYR. Cultivars with longer growth durations, and greater spikelet numbers and grain weights, could significantly increase the rice yield by 14.8%-45.6%. The optimal cultivars, combined with advancing transplanting by 10 d, could increase rice yields by 29.2%-68.9%. Our findings provide new approaches, important insights, and effective options for the sustainable intensification of rice production systems in different regions of China.
KeywordAdaptation Agriculture Impact Optimal management Sustainable intensification
DOI10.1016/j.agsy.2019.01.007
WOS KeywordNITROGEN USE EFFICIENCY ; HIGH-TEMPERATURE STRESS ; PAST 3 DECADES ; IRRIGATED RICE ; CLIMATE-CHANGE ; SUSTAINABLE INTENSIFICATION ; GROWTH DURATION ; WHEAT ROTATION ; WATER-USE ; IMPACTS
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFD0300201] ; National Science Foundation of China[31561143003] ; National Science Foundation of China[41571088] ; National Science Foundation of China[41571493]
Funding OrganizationNational Key Research and Development Program of China ; National Science Foundation of China
WOS Research AreaAgriculture
WOS SubjectAgriculture, Multidisciplinary
WOS IDWOS:000460826800009
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/49278
Collection中国科学院地理科学与资源研究所
Corresponding AuthorTao, Fulu
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
2.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Zhang, He,Tao, Fulu,Zhou, Guangsheng. Potential yields, yield gaps, and optimal agronomic management practices for rice production systems in different regions of China[J]. AGRICULTURAL SYSTEMS,2019,171:100-112.
APA Zhang, He,Tao, Fulu,&Zhou, Guangsheng.(2019).Potential yields, yield gaps, and optimal agronomic management practices for rice production systems in different regions of China.AGRICULTURAL SYSTEMS,171,100-112.
MLA Zhang, He,et al."Potential yields, yield gaps, and optimal agronomic management practices for rice production systems in different regions of China".AGRICULTURAL SYSTEMS 171(2019):100-112.
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