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本文作为仓虫群落生态的初步研究之一,根据1983—1984两年从四川七市(县)进行定时定点系统调查和普查的资料,对仓虫群落的一般结构特征,仓虫群落中的常见种和优势种以及仓虫对储粮及其它资源的为害进行了定量研究。首先,用分类类群和生态类群两种划分法,揭示了仓虫群落的一般结构特征,即不同仓虫群落虽然组成十分不同,但其中的成员都在不同的生态功能水平上起着相似的作用。仓虫群落的结构在很大程度上受鞘翅目昆虫所左右,而螨类由于密度很大,其影响也不能忽视。其次,用常见度指标定量地比较出所研究仓虫群落中的常见种是玉米象、绿豆象(只在豆类中)、锯谷盗、拟谷盗、脊胸露尾甲、麦蛾、腐食酪螨和米象金小蜂;而玉米象、拟谷盗和腐食酪螨又是发生量大、为害严重的优势种,尤其是玉米象。最后,用偏爱度指标定量地比较出玉米象、锯谷盗、麦蛾、拟谷盗和腐食酪螨等主要害虫(螨)对玉米、稻谷、大米、糯米、小麦、面粉、蚕蛹等资源的偏爱度高,为害严重。资源丰富的地脚粮常为大多数仓虫提供了生存、繁殖的有利条件,为粮店、加工厂等潜伏下大量害虫,应加强清洁卫生防治。
This paper, as one of the preliminary studies on the habitat ecology of C. elegans, based on the data from regular fixed-point systematic surveys and censuses in seven cities (counties) in 1983-1984 in 1983-1984, analyzed the general structural characteristics of the C. elegans community and the common Species and dominant species as well as the caterpillars on the storage of grain and other resources for a quantitative study. First of all, using the classification methods of taxonomic group and ecological group, we reveal the general structural characteristics of the snakebug community, that is, although the composition of the different snakebug community is quite different, all the members have similar functions at different ecological functions . The structure of the coleoptera community is largely influenced by the Coleoptera insects, which can not be ignored due to their high density. Secondly, the common indicators of the degree of common quantitative comparison of the Cercopithecus community is common corn, Xiang beans (only in beans), Sawatus Piranha, Pigeon Valley, Spine chestnose, wheat moth, rotten food Buttermilk mites and golden elephant bee, while corn elephant, mongolian and rotten corn mites are the dominant species with serious damage, especially corn elephant. Finally, the preference index was used to quantitatively compare the main pests (mites) such as corn, rice, glutinous rice, wheat, flour, silkworm pupa and other resources High degree of preference, serious damage. Resource-rich foot food often provide survival and breeding conditions for most of the caterpillars, for foodstuffs, processing plants and other lurking large number of pests, should strengthen hygiene and control.