The development of double-season rice cropping systems has made a considerable contribution toward achieving rice self-sufficiency in China. However, the planting area for double-season rice has sharply decreased in the Hunan-Jiangxi region (the most important producing region of double-season rice in China) as a result of the conversion from double- to single-season rice cropping systems (referred as the rice "double-to-single" phenomenon). Due to concerns about the negative effect of the "double-to-single" phenomenon on rice self-sufficiency in China, we have estimated the planting area of double- and single-season rice in the Hunan-Jiangxi region that will be needed by 2030 to maintain the contribution to China's rice production, based on the most recent 10 years (2011-2020) of historical data available. The results of our analysis can provide guidance for the government's decision-making when planning the planting area of double- and single-season rice in the Hunan-Jiangxi region.
