桑盾蚧雌介壳虫在猕猴桃园中的空间分布特征

Spatial Distribution of Pseudaulacaspis pentagona Females in Kiwi Orchard

[目的]了解猕猴桃果园桑盾蚧雌介壳虫的空间分布格局,为猕猴桃上的桑盾蚧防治提供理论依据。[方法]对桑盾蚧雌介壳虫在猕猴桃园的空间分布进行了调查。[结果]在高密度果园,桑盾蚧雌介壳虫主要分布于当年生枝条;但在发生低密度果园,桑盾蚧雌介壳虫在当年生、一年生和二年生枝条上差异不显著。桑盾蚧雌介壳虫在猕猴桃果树阴阳面枝条上的数量差异不显著。桑盾蚧雌介壳虫在猕猴桃园呈聚集分布,分布的基本成分为单株。[结论]桑盾蚧雌介壳虫在猕猴桃果园聚集分布,但其在果树的阴阳面枝条上分布差异不显著。

[Objective]The spatial distribution of Pseudaulacaspis pentagona females in kiwi orchard was investigated in order to provide reference for control of Pseudaulacaspis pentagona in kiwi orchard. [Method]Several parameters were used to evaluate the spatial distribution of Pseudaulacaspis pentagona females in kiwi orchard.[Result]The females showed aggregated distribution in kiwi orchard. The density of females was no significant difference between north and south branches. In the orchard with high density of P. pentagona female adults,the number of females on current year twigs was higher than one-year old and two-year old twigs. However,there was no significant difference among current year,one-year old and two-year old twig in the orchard with high density of P. pentagona females. [Conclusion]The P. pentagona females aggregate in the kiwi orchard. There is no significant difference in density of females between north and south branches.