摘要
根据对湖北省荆门市（经度１１２°０７′Ｅ、纬度３１°０２′Ｎ）３个露天散装稻谷粮堆的系统调查，表明发生在露天散装稻谷粮堆的昆虫种类共计３７种，隶属于２纲７目２６科。其中２６种鞘翅目昆虫是构成群落的主要类群，占种数的６４．７％；次级性害虫所占数量比例最高，达８３．７％；锈赤扁谷盗、长角扁谷盗、谷蠹是群落的优势种群。在时间格局上，玉米象、长角扁谷盗、锈赤扁谷盗和谷蠹作为优势种群在时间结构上表现出明显的分化；群落的总个体数及其多样性、丰富度及均匀度随时间序列的增加呈上升趋势，７月份多样性和均匀度达到高峰值。在空间格局上，不同层次分布着不同昆虫种类和数量，表现出明显的垂直分层格局；全年发生在上层的昆虫丰富度最高，总个体数最大，下层群落多样性最高，变化最为稳定。
Based on data from systematic investigation of 3 outdoor stored bulk grain masses in Jingmen City, Hubei Province (112°07′E, 30°02′N) in 1992, insects of 37 species were identified with two classes, seven orders, twenty six families. Twenty six beetles are main species accounting for 64.7% of the community. Superiority index estimation indicated that the Crptolestes ferrugineus( Stephens ), Cryptolestes minutus (Oliver) and Rhizopertha dominica Fab. were the most destructive pest in outdoor stored bulk grain mass. In spring, the species diversity, abundance, evenness and the population size in the community increase. In July, however, the species diversity and evenness maximize. The insect communitvy is low in stability and diversity in the surface layer. In the bottom layer, however, species diversity and stability is higher.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1999年第3期214-218,共5页
Journal of Huazhong Agricultural University
基金
湖北省科技重点攻关资助
关键词
露天粮堆
昆虫群落
多样性
储粮
虫害
outdoor stored bulk grain mass, insect community, temporal spatial pattem, diversity
