江西双季早稻播种育秧期低温连阴雨灾害分析OACSTPCD

Based on daily meteorological data from 82 national meteorological stations in Jiangxi Province from 1961 to 2023,the risk of low temperature and continuous rain meteorological disasters during the sowing and seedling period of double-cropping early rice in Jiangxi was investigated.The results showed that from 1961 to 2023,the average temperature during sowing and seedling period of early rice in Jiangxi Province increased at a rate of 0.379℃/10 a,and the sunshine hours showed a trend of first decreasing and then increasing.The number of days of low-temperature continuous rain disasters at different levels showed a trend of increasing first and then decreasing,with high value areas occurring in the 1980s and 1990s,with fewer occurrences occurring after 2000.The overall probability during 2001～2023 was lower than that during 1961～2000,but the high value areas shifted to the northwest of Jiangxi,while the northeast and central parts of Jiangxi weakened.According to the comprehensive risk level,high-risk areas are mainly distributed in Fuzhou City,Ji'an City,Pingxiang City,Yichun City,Nanchang City and Jiujiang City.Medium risk areas mainly include the northeastern parts of Southen and Northeastern Jiangxi,while low risk areas are mainly located in the southern part of Southen Jiangxi.