《环境昆虫学报》

作者	单位
齐国君，刘杰，陈婷，吕利华，何余容	1. 广东省农业科学院植物保护研究所/广东省植物保护新技术重点实验室，广州 510640；2. 广州市越秀区疾病预防控制中心，广州 510055；3. 华南农业大学农学院，广州 510642）

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中文摘要:

为了明确药剂灌巢剂量对红火蚁蚁巢迁移的影响。本研究利用不同剂量的锐劲特药液对红火蚁进行灌巢处理，在野外条件下观察了药剂灌巢后红火蚁蚁巢的迁移情况。结果表明：（1）当药液量与蚁巢体积的比例低于1.6时，会出现蚁巢迁移，药液量较大时，灌巢防治红火蚁可取得较好的防效；（2）随着灌巢药液量的增加，新蚁巢出现的个数明显减少，出现比例明显降低，新蚁巢的体积明显减小；（3）随着灌巢药液量的增加，新蚁巢出现的时间会延迟，处理药液量为2.5 L时，新蚁巢一般出现在1-3 d内，而药液量增加后，新蚁巢一般在3-5 d出现；（4）药剂灌巢防治后，红火蚁会在距处理蚁巢1-7 m范围内建立新蚁巢，不同药液量处理之间没有明显差异，新蚁巢出现的位置没有明显的方位取向。为避免灌巢不彻底导致蚁巢迁移，应保证灌巢用药量充足，推荐药液量为蚁巢体积的2倍以上。

英文摘要:

In order to clarify the effect of drench insecticide dose on the nest movement of Solenopsis invicta Buren. The nest movement of S.invicta was observed by drenching different doses of fipronil under the field condition. The result showed that: (1) The movement of treatment nest of S.invicta happened while the ratio of insecticide dose and nest size was lower than 1.6. The drench insecticide had excellent control effect on S.invicta when the drench insecticide dose was sufficient. (2) The number, occurrence probability and size of new nest of S.invicta significantly decreased during with the increase of insecticide dose. (3) The emergence time of new nest of S.invicta delayed with the increase of insecticide dose. The new nest of S.invicta appeared in 1-3 days under the treatment of 2.5 L dose, while in 3-5 days after the insecticide dose increasing. (4) The new nest of S. invicta would be established in the range of 1 to 7 miles away from the treatment nest, but there was no obvious difference among the treatment of different insecticide doses. The location of new nest of S.invicta did not show any obvious directionality. Therefore, in order to avoid the nest movement causing by incomplete artificial control, the recommended drench insecticide dose should be more than 2 times as much as the nest size of S. invicta.

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