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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (9): 37-41.doi: 10.11924/j.issn.1000-6850.casb2023-0377

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Cotton Yield Forecast in Shandong Province Based on Meteorological Key Factors

HOU Mengyuan()   

  1. Weishan Meteorological Bureau of Shandong Province, Weishan, Shandong 277600
  • Received:2023-05-12 Revised:2023-12-15 Online:2024-03-25 Published:2024-03-22

Abstract:

Cotton is an important cash crop in Shandong Province,and its growth and yield formation are closely related to meteorological conditions. It’s significant to carry out cotton yield prediction for economic security in Shandong Province. Based on the cotton yield data in Shandong Province from 1990 to 2020, the daily average temperature, precipitation and sunshine hours from 17 meteorological stations during the same period, the meteorological key factors affecting cotton yield were determined by means of factor puffing and correlation analysis, and a dynamic forecast model of cotton yield with every five days as the time step in Shandong Province was established. The province was divided into 4 regions, and the forecast model of cotton yield was tested during 1990-2016 and was applied during 2017-2020. The results showed that the average trend back-testing accuracy was 94.1% in the province, and ranged from 87.3%to 94.1% in different regions. The forecast accuracy of cotton yield during 2017-2020 was 95.1% in Shandong Province, and was 92.1%, 91.5%, 91.5%, and 90.9% in southern region, central region, northwestern region and eastern region of Shandong, respectively. The results of this study provided a theoretical basis for the quantitative, dynamic, and refined prediction of cotton yield in Shandong Province.

Key words: key meteorological factors, factor puffing, meteorological yield, dynamic prediction