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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (4): 102-107.doi: 10.11924/j.issn.1000-6850.casb2024-0375

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Study on Meteorological Suitability of Winter Wheat in Jianghan Plain Based on Optimized Sowing Date

XIA Yan1(), LIU Kaiwen2(), YE Pei3, DENG Yanjun3, XIAO Xiao2, GENG Yifeng3, WU Qixia1   

  1. 1 College of Agriculture, Yangtze University, Jingzhou, Hubei 434025
    2 Wuhan Regional Climate Center, Wuhan 430070
    3 Jingzhou Agro-meteorology Experiment Station of Hubei Province, Jingzhou, Hubei 434025
  • Received:2024-06-03 Revised:2024-12-20 Online:2025-01-23 Published:2025-01-23

Abstract:

In order to optimize wheat sowing date in the Jianghan Plain, enhance the adaptability to climate change, and promote wheat yield and quality, the temporal and spatial characteristics of meteorological suitability in winter wheat were compared based on the meteorological suitability evaluation model. Results showed that, climate change could increase the temperature suitability and precipitation suitability, but reduced that of sunlight. Delaying the sowing date could appropriately improve the meteorological suitability. Among them, November 11th was the best sowing date, next was November 21st and November 1st, by enhancing the temperature and precipitation suitability from the jointing to maturity stage. Compared with the traditional sowing date (October 21st), delaying sowing for about 20 days (November 11th) is beneficial for improving the meteorological suitability in the Jianghan Plain.

Key words: Jianghan Plain, winter wheat, sowing date, meteorological suitability