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马尾松毛虫发生与气候条件的关系,已有很多研究材料。1979年有人提出:“影响马尾松毛虫大发生的气象因子中,最有显著相关性的气温是二、三月气温高于历年同期平均值”,并已应用于电算,作为测报松毛虫发生的重要依据。但据我在长期的测报和防治工作中收集的大量资料,并参照本省南昌、上饶、赣州地区几个常灾县的气象资料综合分析来看,马尾松毛虫越冬代虫口数量消长与二、三月气温的月平均值没有明显相关性,而与“倒春寒”的
Masson pine caterpillars occur with the climatic conditions, there have been many research materials. It was suggested in 1979 that “the most significant correlation between meteorological factors influencing the large-scale occurrence of Dendrolimus punctatus occurred in February and March and the temperature was higher than the average over the same period of previous years” and has been applied to the calculation of the occurrence of Dendrolimus punctatus An important basis. However, according to the large amount of data collected in the long-term survey and control work and with the comprehensive analysis of the meteorological data of several frequently-hit counties in Nanchang, Shangrao and Ganzhou in the province, The monthly mean monthly temperature has no obvious correlation with the “late spring cold”