Studies On The Dynamics Of Arthropod Communities And Monitoring Of Major Pests In Orchard-crop Intercropping Systems

In this article, the regularities of arthropod in the different types in orchard-crop intercropping systems, in Aksy region of southern Xinjiang, were studied with ecological method. Study on the structure, the stability, the diversity and the tempral dynamics of the arthropod community in orchard-crop intercropping systems.Study on the trends of the major pests and makes a prevention and cure experiment for them. It has provided the theory basis for preventing and controlling the major pests of the walnut and the jujube and the standard production. The main results showed:There were 126 species of arthropods (including117 species of arthropods in walnut yard,109 species of arthropods in walnut yard) in different type yard ecosystems. The distribution law of familysand species, intercropped walnut and wheat yard had a largest number in different four type walnut yards, intercropped jujube and wheat yard had a largest number in different four type jujube yards. Chromaphis juglandicola Kaltenbach was the dominant species in walnut yard ecosystems, Tetranychus truncatus Ehara was the dominant species in jujube yard ecosystems.In different times, the different type yard ecosystems have different index of dominant concentration, the walut and jujubeyard with weeds have variability index.Apocheima cinerarius Erschoff were one of the severe pests in walnut yard. The rearch showed that eclosion periods were in the March 5-March 27 period in Aksy, the male was earlier 3 to 5 d than female. The results of non-pollution control showed that the trunk capture 6.8 times higher than the indirect adhesive glue directly, the indirect adhesive glue directly has 2.2 times morality of larval population density higher than the trunk. AciNPV control efficacy higher than Sumderb WP, against effect is 90.74%,Chromaphis juglandicola Kaltenbach were one of the severe pests in walnut yard.This pest have reach 3 maximum periods in walnut yards in Aksy, and this pest reached the most quantities in Jul.& Aug. in Aksy. The results of the potency tests for this pest with nine insecticides in the fields showed that except 20% Dicofol EC.Another 8 insecticides tested had good effects, efficacy come to 96% above.Dasineura datifolia Jiang were one of the severe pests in jujube yard. This pest could completed 4 generations a year in Aksy, the first generation and the second generation reach a maximum numble in Aksy.The results of insecticide and yellow sticky card against it showed that 48% Chlorpyrifos EC had the best control efficacy, against effect is 92.79%. While 5% Imidacloprid EC and 25% Fenvalerate-Malathion EC effect to be unsatisfactory, against effect has achieved about 78%. Hitched up the yellow sticky cards had a better control efficacy than didn't use the cards manifests.Tetranychus truncatus Ehara were one of the severe pests in jujube yard. From the result of the monitoring.In jujube and upland cotton intercropping, the group of Tetranychus truncatus Ehara population amount emerges 3 increasing summit, while 2 summits in jujube and long-fibre The results of trial showed that 1.2% Matrine EC,48% Chlorpyrifos EC had the best control efficacy, against efficacy more than 90%. While 20% Amitraz EC manke EC effect to be unsatisfactory.In integrated insecticides, Alcohol Mixture had a well control efficacy, against effect is 92.76%.