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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (1): 73-77.doi: 10.11924/j.issn.1000-6850.casb2022-1035

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A Model for Forecasting the Blooming Period of Oilseed Rape in High Altitude Area of Zhaosu

WUMITI·Jumatai1,2(), BAI Jinfeng2, MA Yuping1(), WU Nan3, MAHEBA·Baheti1   

  1. 1 Ili Meteorological Bureau, Yining, Xinjiang 835000
    2 College of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225
    3 Zhaosu County Meteorological Bureau, Yining, Xinjiang 835600
  • Received:2022-12-07 Revised:2023-04-04 Online:2024-01-05 Published:2023-12-29

Abstract:

In this study, gray correlation analysis and correlation analysis were used to identify the most correlated phenological period and significantly correlated meteorological factors for the blooming period of oilseed rape in Zhaosu county, respectively. A regression model was developed using data on phenology and meteorological factors from 1990 to 2019 in Zhaosu county to predict the blooming period in 2020 to 2022. In addition, the mean square error and relative error were used to evaluate the fitting results of the model. Finally, the prediction results of the model were evaluated using the mean fitting accuracy. The results showed that the relative errors of the regression model based on phenological period of oilseed rape in Zhaosu county and the regression model based on meteorological factors in Zhaosu county were 0.72% and 2.59%, respectively, the mean squared errors were 2.6 and 6.0, respectively, and the average fitting accuracy of the prediction results were 98.9% and 91.7%, respectively. A comparison of the two models revealed that the regression model of oilseed rape blooming period in Zhaosu county based on the phenological period was more accurate in model prediction.

Key words: oilseed rape, forecasting the blooming period, Zhaosu county, grey correlation analysis, phenological period