种源,不仅是森林天然更新的一个重要条件,也是人工造林的物质基础。 影响种源和种质好坏的因素之一——昆虫,虽然在某些方面,如种蝇对落叶松种子的危害,已感到问题的严重。但对我国一些主要造林树种的球果和种子害虫的研究,尚无系统的工作。特别是在天然林内,球果和种子害虫的资料则更少。 Provenance is not only an important condition for the natural regeneration of forests, but also the material basis for afforestation. Insects, one of the factors that affect germplasm and germplasm, are already experiencing grave problems in some areas, such as the dangers of the type fly on larch seeds. However, there is no systematic work on the studies of coniferous and seed pests in some of the major afforestation species in our country. Especially in natural forests, there is less information about cones and seed pests.