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目的探讨气象因素对农田鼠类数量的影响。方法采用典型相关分析对开江县1978-1993年农田鼠密度与气象因素进行统计分析。结果 1978-1993年开江县农田总鼠密度为5.58%～26.57%,黑线姬鼠、褐家鼠、四川短尾鼩密度分别为1.91%～18.41%、0.68%～10.86%、0.47%～9.50%。气温、湿度、降雨量、日照数等12种气象因素与总鼠密度,黑线姬鼠、褐家鼠、四川短尾鼩密度4个因变量的典型相关系数中,第1对(r=1.0000)有统计学意义(χ2=248.7032,P<0.01),鼠类数量以总鼠密度标准系数最大(4.7748),气象因素标准系数最大的依次为7-8月平均日照数(-3.1532)、7-8月平均湿度(-1.6177)和7-8月平均降雨量(-1.4652),且全部为负相关。结论农田鼠类数量主要受7-8月平均日照数、平均湿度和平均降雨量的影响。
Objective To explore the influence of meteorological factors on the number of rodents on farmland. Methods Canonical correlation analysis was used to analyze the density of rodents and meteorological factors from 1978 to 1993 in Kaijiang County. Results The total rodent densities of farmland in Kaijiang County from 1978 to 1993 were 5.58% ~ 26.57%. The densities of A. chinensis, R. chinensis and S. marsh were 1.91% ~ 18.41%, 0.68% ~ 10.86% and 0.47% ~ 9.50%. The first pair (r = 1.0000) of the typical correlation coefficients of four meteorological factors such as temperature, humidity, rainfall, sunshine number, and total rodent density, Apodemus agrarius, ) Was statistically significant (χ2 = 248.7032, P <0.01). The rodents had the largest total rodent densities (4.7748) and the highest standard coefficients of meteorological factors were the average number of sunshine from July to August (-3.1532), 7 - Average humidity in August (-1.6177) and July-August average rainfall (-1.4652), all negatively correlated. Conclusion The number of rodents in farmland is mainly affected by the average number of sunshine, average humidity and average rainfall in July-August.