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据研究辽宁省二代粘虫的发生程度受虫源地、发生地的气象条件,迁飞期的大气虹流形势的影响。群所周知,海洋是大气环流的重要热源。太平洋海域的热状况直接影响我国东部及东北部的温度、降水和环流形势。从而制约辽宁省二代粘虫的发生程度。本文用切贝雪夫多项式对太平洋海域的海温进行展开,以展开系数为预报因子建立辽宁省二代粘虫发生程度的长期预报模式。较早地预报其发生趋势。一、资料及处理辽宁省二代粘虫发生程度资料取自于辽宁省农作物病虫测报站(见表1)。
According to the study of the occurrence of the second generation armyworm in Liaoning Province by the insect source, the meteorological conditions of the place, the impact of atmospheric conditions during the migration period. As we all know, the ocean is an important heat source for the circulation of the atmosphere. The thermal conditions in the Pacific Ocean directly affect the temperature, precipitation and circulation in eastern and northeastern China. Thus restricting the occurrence of second generation armyworm in Liaoning Province. In this paper, the Chebyshev polynomial is used to develop the sea surface temperature in the Pacific Ocean. The coefficients are used as predictors to establish the long-term prediction model of the occurrence of the second generation armyworm in Liaoning Province. Predict its trend earlier. I. Data and Management The incidence of the second generation armyworm in Liaoning Province was obtained from Liaoning Provincial Pest and Disease Report Station (Table 1).