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本文论述松毛虫发生世代和世代分化的复杂性,包括落叶松毛虫、马尾松毛虫、赤松毛虫和油松毛虫等。发生世代因地区不同而异。在同一地区,由于松毛虫幼虫的滞育,常出现世代分化。世代分化比例在不同地区、不同年份、不同松林和不同树木之间都有差异。在同一地方,不同年份也有差异。滞育与幼虫孵化期、气候、生态条件和食料有关。本文还讨论了“油松毛虫发育起点温度和有效积温的研究”〔林业科学,1987,23(3)〕的有关问题。
This article discusses the complexity of generations and generations of dendrolimus that occur, including Dendrolimus punctatus, Dendrolimus punctatus, Dendrolimus punctatus, and Dendrolimus punctatus. Occurrences vary by region. In the same area, generational differentiation often occurs due to the diapause of the pine caterpillar larvae. Differentiation of generations in different regions, different years, different pine and different trees are different. In the same place, there are differences in different years. Diapause and larval incubation period, climate, ecological conditions and food-related. This article also discusses the “development of pine caterpillar starting point temperature and effective accumulated temperature” (Forestry Science, 1987, 23 (3)] of the relevant issues.