烟蚜与其天敌种群在数量和分布格局上的关系

Relationship of Population Distribution Patterns between Tobacco Aphid (Myzus persicae Sulzer) and Its Natural Enemies

研究结果表明：烟蚜与烟蚜茧蜂、草间小黑蛛等几种主要天敌在田间分布的关系均为聚集分布，说明烟蚜是聚集分布时，几种天敌也是聚集分布，借以提高天敌对害虫的控制作用。烟蚜与烟蚜茧蜂间的垂直分布关系是两者聚集场所间极相关，证明烟蚜茧蜂对烟蚜的聚集场所有明显的追随关系，两者在烟草叶片叶序上的分布吻合。

The research results showed that the spatial distribution of several main natural enemies of Myzus persicae Sulzer,Aphidius gifuensis Ashmead and Erigonidium graminicola Sundevall etc.belonged to aggregate type,being consistent with that of Tobacco aphid.Vertical distribution of Myzus persicae Sulzer and Aphidius gifuensis Ashmead was extremely correlative with each other in aggregate places,indicating that Aphidius gifuensis Ashmead has the ability of following tobacco aphids in different tobacco leaves.