基于交叉谱分析法的因子筛选

利用统计上的交叉谱分析法,对影响江苏省通州市的稻纵卷叶螟数量的气象因子进行了分析.结果表明,1、5月份的气象因子是制约该地区迁入虫量的关键因子;而7月份的气象因子只是对迁入虫量的数量波动有影响,但不能影响迁入虫量的基数.同时对虫情因子间的关系进行了分析,发现这些因子间的关系是很密切的,因而在预测模型中要考虑到它们之间的这种关系.

Factor Selection Based on Cross Spectrum Analysis

Based on the method of cross spectrum analysis,relations between meteorological factors and immigration adult numbers of the rice leaf folder in Tongzhou City Jiangsu Province have been studied,the result shows that the meteorological factors of January and May determine the immigration adult number and the meteorological factors of July only effect the fluctuation in the number of immigrants.Strong relations among the immigration adult numbers in different months also have been discovered by this method,so a forecasting model must be considered with the relations.