苹果园金纹细蛾寄生蜂种类及空间分布调查

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.

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

Studying the species,spatial distribution and mutual relations of parasitic wasps of Lithocollet ringoniella in apple orchards through comparing in different habitats and observation in laboratory.The results show that: Apanteles theivorae,Sympiesis soriceicornis and Ageniaspis testaceipesare were dominant species in Yangling and Luochuan apple orchards; In Luochuan the order was Sympiesis soriceicornis,Apanteles theivorae,Ageniaspis testaceipes,while Yangling was Apanteles theivorae,Sympiesis soriceicornis,Ageniaspis testaceipes; the total amount of parasitic wasps in Yangling was 1.9 times in Luochuan.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 canopy had more less cluster,when 1 2.47 it show polymer.