论文部分内容阅读
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 results showed that the distribution of several main natural enemies of Myzus persicae and Aphidium avenae and Herba maudis both clustered in the field, indicating that when the Myzus persicae is aggregated, several kinds of natural enemies are also aggregated and distributed, Control of hostile pests. The vertical distribution relationship between the aphids and the tobacco aphid was the extremely relevant between the two gathering places, which proved that the tobacco aphid had a significant follow-up relationship with the gathering place of the tobacco aphid.