大栗鳃金龟发生与环境因子相关性调查研究

调查发现，大栗鳃金龟幼虫发生与环境因子关系密切，表现为无林地、未成林造林地重于有林地、灌木林地，郁闭度低的林分重于高的林分，疏松的土壤重于紧密土壤，坡面重于脊部与谷部，一些谷部及易形成积水的地方，虫口密度接近于零。指出气候变迁及生态环境恶性发展，是太子山浅山地带大栗鳃金龟危害逐渐严重的主要原因。

Study on Correlation between Environmental Factors and Occurrence of Melolontha hipocastanea mongolica

Investigation showed: there was a closer relation between environmental factors and larva occurrence of Melolontha hipocastanea mongolica, and its occurrence features represented: the larva occurrence of non-forested land and immature forest land is graver than that of forest land and shrub land; thin forest is more serious than dense forest; loose soil is graver than compact soil; slope is severer than valley and ridge and the density of larva reached nil in some valley and drained area, which indicated that the climate changes and the ill development of ecological environment are main causes resulting in serious damages gradually of Melolontha hipocastanea mongolicain non-deep forest district of Taizi Mountain.;