五种出口农产品仓储昆虫群落结构的数量特征

Studies on numerical characteristics of insect community structure of five stored export agricultural products

利用群落物种的丰富度、生态优势度、多样性、均匀度等群落特征指数,研究了临沂市5种出口农产品仓储昆虫群落结构的数量特征,并分析了它们的相似性。通过系统聚类分析将5种群落分为4类,脱水蔬菜和中药材仓储昆虫群落同属于一类,其它3种农产品仓储昆虫群落各属一类。除大蒜群落结构合理外,其它群落结构都不合理,粮谷群落结构尤其不合理。结合仓储昆虫群落结构特征指数、害虫及天敌的发生情况,分析了4大类群落的特点,并提出了对应的仓储管理意见。利用群落特征指数,对粮谷昆虫群落时间格局的结构特点进行了研究,根据不同时间害虫及天敌的发生情况,提出了相应的害虫管理措施。

The numerical characteristics of insect community structure of 5 kinds of export agricultural products in linyi were analyzed with the following indexes: species richness, ecological dominance, community diversity and evenness. The similarity of the 5 communities was also analyzed. By the method of hierarchical cluster analysis, the study of numerical classification was made and 5 communities were divided into 4 bigger groups. The insects communities of dehydrated vegetables and Chinese herbal medicine were in the same group and the rest 3 communities were divided into 3 groups. All the structures of insects communities, especially the structure of grain insects community , were not rational except that of the garlic insect community. The characters of communities of the 4 groups were analyzed combined with characteristics of the community structure of stored grain insects . The occurrences of the pests and the natural enemies, and the relevant opinions of the grain management were provided. The temporal characters of the insect community were researched through analyzing the characteristics of community structure and relevant pests control measures were suggested according to the occurrences of the pests and the concerned natural enemies in different time.