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水稻螟虫发生期在年际间常呈现一定的周期规律,本文以武平县病虫测报站资料,采用逐次方差分析周期外推法,找出一代三化螟蛾高峰期(高峰日)发生变化的周期性,从而作出长期趋势预报。
The occurrence period of rice stem borers often shows a certain period law in the interannual period. Based on the information of pest and disease test stations in Wuping County, the cycle extrapolation method of variance analysis was used to find the change of the peak (peak day) Cyclical, so as to make long-term trend forecast.