气象与环境学报2025，Vol.41Issue(2)：101-106,6.DOI:10.3969/j.issn.1673-503X.2025.02.012
气象条件对广西晚稻灌浆速率的影响
Effects of meteorological conditions on grain-filling rate of late rice in Guangxi
摘要
Abstract
Daily meteorological data including average temperature,maximum temperature,minimum temperature,and sunshine hours in Liuzhou from October 2020 to November 2022,along with development period,grain-filling rate,and yield structure data of late rice(Yexiang Youlisi)from staggered sowing experiments conducted from 2020 to 2022,were analyzed to determine the effects of meteorological conditions on grain-filling rate and yield structure of late rice.Results showed that the grain-filling rate during 11-20 days after flowering was extremely sig-nificantly positively correlated(P<0.01)with average temperature,maximum temperature,and minimum temper-ature,and significantly positively correlated(P<0.05)with sunshine hours.The grain-filling rate during 21-30 days after flowering was only significantly positively correlated(P<0.05)with maximum temperature,while oth-er meteorological factors did not reach significant correlation.By establishing regression equations between grain-filling rate and average temperature,maximum temperature,minimum temperature,and sunshine hours,the calcu-lated agrometeorological service indicators for the grain-filling period of late rice in Guangxi indicated that the low-er threshold values for 5-day average temperature,maximum temperature,and sunshine hours during the grain-fill-ing period were 19.5℃,26.7℃,and 21.2 h,respectively;and the optimum values were 25.0℃,35.9℃,and 41.0 h,respectively.关键词
平均气温/最高气温/播种期/气象指标Key words
Average temperature/Maximum temperature/Sowing date/Meteorological indicators分类
农业科学引用本文复制引用
吴炫柯,黄维,贾若欣,刘永裕,刘梅,姚裕群..气象条件对广西晚稻灌浆速率的影响[J].气象与环境学报,2025,41(2):101-106,6.基金项目
中国气象局创新发展专项(CXFZ2021Z059、CXFZ2022J051)和广西自然科学基金项目(2020GXNSFAA159028)共同资助. （CXFZ2021Z059、CXFZ2022J051）
