主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2025, Vol. 41 ›› Issue (2): 101-106.doi: 10.3969/j.issn.1673-503X.2025.02.012

• 快报 • 上一篇    

气象条件对广西晚稻灌浆速率的影响

吴炫柯1,2, 黄维1,2, 贾若欣1,2, 刘永裕1,2, 刘梅1,2, 姚裕群3   

  1. 1. 柳州市农业气象试验站, 广西柳州 545003;
    2. 柳州市气象局, 广西柳州 545003;
    3. 广西科技大学, 广西柳州 545005
  • 收稿日期:2023-07-24 修回日期:2023-08-31 发布日期:2025-06-20
  • 通讯作者: 姚裕群,女,教授,E-mail:yaoyuqun2005@163.com。 E-mail:yaoyuqun2005@163.com
  • 作者简介:吴炫柯,男,1979年生,正高级工程师,主要从事农业气象方面研究,E-mail:wuxuanke@163.com。
  • 基金资助:
    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。

Effects of meteorological conditions on grain-filling rate of late rice in Guangxi

WU Xuanke1,2, HUANG Wei1,2, JIA Ruoxin1,2, LIU Yongyu1,2, LIU Mei1,2, YAO Yuqun3   

  1. 1. Liuzhou Agricultural Meteorological Experimental Station, Liuzhou 545003, China;
    2. Liuzhou Meteorological Service, Liuzhou 545003, China;
    3. Guangxi University of Science and Technology, Liuzhou 545005, China
  • Received:2023-07-24 Revised:2023-08-31 Published:2025-06-20

摘要: 选用2020年10月至2022年11月柳州市平均气温、最高气温、最低气温、日照时数逐日气象数据和2020—2022年分期播种试验晚稻(野香优莉丝)发育期、灌浆速率和产量结构资料,分析了气象条件对晚稻灌浆速率和产量结构的影响。结果表明:开花后11~20 d灌浆速率与平均气温、最高气温、最低气温呈极显著正相关(P<0.01),与日照时数呈显著正相关(P<0.05);开花后21~30 d灌浆速率只与最高气温呈显著正相关(P<0.05),其他气象因子没有达到显著相关。通过构建灌浆速率与平均气温、最高气温、最低气温和日照时数的回归方程,计算的广西晚稻灌浆期农业气象服务指标表明,晚稻灌浆期5 d平均气温、最高气温、日照时数的下限指标分别为19.5℃、26.7℃和21.2 h;适宜度指标分别为25.0℃、35.9℃和41.0 h。

关键词: 平均气温, 最高气温, 播种期, 气象指标

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 significantly positively correlated (P<0.01) with average temperature,maximum temperature,and minimum temperature,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 other 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 calculated agrometeorological service indicators for the grain-filling period of late rice in Guangxi indicated that the lower threshold values for 5-day average temperature,maximum temperature,and sunshine hours during the grain-filling 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.

Key words: Average temperature, Maximum temperature, Sowing date, Meteorological indicators

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