苹果园金纹细蛾寄生蜂种类及空间分布调查

Preliminary Study on Species and Spatial Distribution of Parasitic Wasps of Lithocolletis ringoniellain in Apple Orchard

通过不同生境比较与室内观察相结合的方法,研究苹果园金纹细蛾寄生蜂种类、空间分布及其相互关系。结果表明,杨凌和洛川苹果园中,绒茧蜂、姬小蜂和跳小蜂为优势种群;洛川以姬小蜂、绒茧蜂和跳小蜂为序,杨凌则为绒茧蜂、姬小蜂和跳小蜂。杨凌寄生蜂总量是洛川的1.9倍。寄生蜂幼虫在杨凌苹果园属聚集分布,洛川为均匀分布;树冠不同方位金纹细蛾寄生蜂在两地均有显著差异,而无极显著差异;杨凌苹果园水平方向无显著差异,在垂直方向上,金纹细蛾寄生蜂上部与中部差异显著;洛川仅东侧和西侧有显著差异。金纹细蛾寄生蜂在苹果树冠内聚集度较小,在1≤λ≤2.47之间显现聚合。

Studying the species, spatial distribution and mutual relations of parasitic wasps of Litho- collet ringoniella in apple orchards through comparing in different habitats and observation in laboratory. The results show that ： Apanteles theivorae, Syrnpiesis soriceicornis and Ageniaspis testaceipesate were dominant species in Yangling and Luochuan apple orchards; In Luochuan the order was Syrnpiesis soriceicornis , Apanteles theivorae , Ageniaspis testaceipes , while Yangling was Apanteles theivorae, Syrnpiesis soriceicornis, Ageniaspis testaceipes ; the total amount of parasitic wasps in Yangling was 1.9 times in I.uochuan. Parasitic larvae in Yangling apple orchard gathered distribution, however evenly distributed in Luochuan; There were significant differences,but not greatly significant differences in different directions of parasitic wasps of Lithocolletis ringoniella in the two places; In Yangling , there was not significant differences in horizontal directions, in the vertical direction, significant difference between the upper part and middle part; In Luochuan there only was significant difference between the west and the east side. The parasitic wasps of Lithocollet ringoniella within the can- opy had more less cluster, when 1≤λ≤2.47 it show polymer.