Southeast Asia must narrow down the yield gap to continue to be a major rice bowl.

Autor: Yuan S; MARA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China., Stuart AM; International Rice Research Institute, Metro Manila, Philippines., Laborte AG; International Rice Research Institute, Metro Manila, Philippines., Rattalino Edreira JI; Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, USA., Dobermann A; International Fertilizer Association (IFA), Paris, France., Kien LVN; Institute of Policy and Strategy for Agriculture and Rural Development, Hanoi, Vietnam., Thúy LT; Conventional Rice Research and Development Center, Field Crops Research Institute, Lienhong, Vietnam., Paothong K; Ayutthaya Rice Research Center, Division of Rice Research and Development, Rice Department, Ayutthaya, Thailand., Traesang P; Thailand Rice Science Institute, Mueang Suphan Buri, Thailand., Tint KM; Marine Science Department, Mawlamyine University, Mawlamyine, Myanmar., San SS; International Rice Research Institute, Seed Division Compound, Department of Agriculture, Gyogone, Myanmar., Villafuerte MQ 2nd; Climatology and Agrometeorology Division, Department of Science and Technology (DOST), Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA), Quezon City, Philippines., Quicho ED; International Rice Research Institute, Metro Manila, Philippines., Pame ARP; International Rice Research Institute, Metro Manila, Philippines., Then R; International Rice Research Institute, IRRI-Cambodia Office, Phnom Penh, Cambodia., Flor RJ; International Rice Research Institute, IRRI-Cambodia Office, Phnom Penh, Cambodia., Thon N; Rice Seed Development and Management Office, Department of Rice Crop, General Directorate of Agriculture, Phnom Penh, Cambodia., Agus F; Indonesian Center for Agricultural Land Resources Research and Development, Indonesian Agency for Agricultural Research and Development, Bogor, Indonesia., Agustiani N; Indonesian Center for Rice Research, Indonesian Agency for Agricultural Research and Development, Sukamandi, Indonesia., Deng N; MARA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China., Li T; Applied GeoSolutions, DNDC Applications Research and Training, Durham, NH, USA., Grassini P; Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, USA. pgrassini2@unl.edu.
Jazyk: angličtina
Zdroj: Nature food [Nat Food] 2022 Mar; Vol. 3 (3), pp. 217-226. Date of Electronic Publication: 2022 Mar 24.
DOI: 10.1038/s43016-022-00477-z
Abstrakt: Southeast Asia is a major rice-producing region with a high level of internal consumption and accounting for 40% of global rice exports. Limited land resources, climate change and yield stagnation during recent years have once again raised concerns about the capacity of the region to remain as a large net exporter. Here we use a modelling approach to map rice yield gaps and assess production potential and net exports by 2040. We find that the average yield gap represents 48% of the yield potential estimate for the region, but there are substantial differences among countries. Exploitable yield gaps are relatively large in Cambodia, Myanmar, Philippines and Thailand but comparably smaller in Indonesia and Vietnam. Continuation of current yield trends will not allow Indonesia and Philippines to meet their domestic rice demand. In contrast, closing the exploitable yield gap by half would drastically reduce the need for rice imports with an aggregated annual rice surplus of 54 million tons available for export. Our study provides insights for increasing regional production on existing cropland by narrowing existing yield gaps.
(© 2022. The Author(s), under exclusive licence to Springer Nature Limited.)
Databáze: MEDLINE
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