Primary Research On Structure And Function Of Arthropod Community In Blueberry Orchard

15 species of pests were founded freshly through 2-year systematically studu on arthropod community in blueberry orchard. There were 10 species of Lepidoptera,namely Lycaeides subsolana(Eversmann), Pontia daplidice (Linnaeus ) , Narosoideus flavidorsalis (Staudinger), Cnidocampa flavescens(Walker), Latoia hilarata Staudinger, Cucullia fraterna Butler, Lymantria dispar(Linnaeus), Acronicta rumicis Linnaeus, Orgyia ericae Gertnar, Malacosoma neustria testacea Motschulsky ; 2 species of Coleoplera,namely Proagopertha lucidula(Faldermann),Monolepta hieroglyphica (Motschulsky); 3 species of Homoptera, namely Cicadella viridis (Linnaeus), Schizaphis piricola (Matsumura) and Myzus persicae(Sulzer). The natural enemies composed of 7 species ,which were Chlorocyptus coreanus Szepligeti,Chaetexorista eutachinoides Baranov, two kinds of unknown fly in Chaetexorista Brauer et Bergenstamm , prey natural enemy Harmonia axyridis(Pallas) etc.The main pests belonged to Lepidoptera, Hymenoptera, Coleoplera etc. which were 57 species. The main natural enemies belonged to Hymenoptera which had 5 species. Articles written at home only reported 2 species of pests, which were in Coleoplera and Lepidoptera.The quantities of leaf and flower that were eaten by the Proagopertha lucidula(Faldermann) were measured ,and the results indicated that: both the male and female had serious bad effect on the leaves and flowers of blueberry. The male had more effect on leaves than the female. And the female had more effect on flowers than the male.Schizaphis piricola (Matsumura) and Proagopertha lucidula(Faldermann) were the main pests at the early stage of the blueberry's growth, which had the largest quantity of occurrence; the quantity of Harmonia axyridis(Pallas) and Araneida were more higher which could control the development of Schizaphis piricola (Matsumura) and Proagopertha lucidula(Faldermann). Monolepta hieroglyphica (Motschulsky) and Myzus persicae(Sulzer) were the major pests at the middle-later stage, and Cicadella viridis (Linnaeus) had more quantity of occurrence at later stage and also occurred at early stage, so we should give more attention to the both stages.The results showed that arthropod community composed of 426 species, in which 373 species belonged to insect class and 53 species belonged to spider class. Characters of arthropod community in blueberry orchard were that: species abundance of community, insect diversity and evenness were more higher; community stability was better. The structure was beneficial for the development of ecological balance, the evolve and displacement of insect ecological system.The temporal dynamics of pest sub-community had strongest influence on the total community; the natural enemies sub-community had stronger influence on the temporal dynamics of the total community; the neutral insect sub-community had a little influence on the total community.Three optimal division was made, and the results were as follows: the first stage was the early composition and fast-developing period of arthropod community in blueberry orchard; the second stage was the period when the fruit-picking was over, in which species abundance and individual number occurred the second peak; and at the third stage, the arthropod community was in recession and the...