不同栽培模式下韭菜迟眼蕈蚊诱集方法比较

Comparison of trapping methods on Bradysia odoriphagaadults under different cultivation patterns

本文比较了室内和田间4种栽培模式:温室大棚、简易大棚+小拱棚、小拱棚、露地条件下黄板、糖醋酒液和清水3种方法对韭菜迟眼蕈蚊成虫的诱集效果,并研究了黄板尺寸、高度、方向对引诱效果的影响。室内试验结果表明,黄板的诱虫效果最好且持效期长,其次是糖醋酒液,清水最差。其中黄板水平放置的诱虫效果好于竖直放置。田间试验结果和室内结果一致,黄板尺寸、高度和数量对引诱效果具有一定的影响,其中390cm2的黄板诱集效果优于其他尺寸,黄板平放于地面时的诱集效果好于离地面10cm和20cm的诱集效果。利用黄板诱杀后对下一代幼虫发生无影响,因此黄板可用于田间监测,不推荐用于防治。

Effects of three trapping methods, yellow sticky trap, sugar-acetic acid-ethanol water and water, to Bradysia odoriphaga adults in laboratory and field were investigated under 4 cultivation modes, such as green- house, artificial shading, small shed and open ground. The impacts of the size, height and direction of yellow sticky on attracting B. odoriphaga adults were also studied. Both field and laboratory results showed that yellow sticky trap was the best and showed persistent effect, followed by sugar-acetic acid-ethanol water, and water was the worst. The trapping effect of yellow sticky trap in horizontal direction was better than that in vertical direc- tion in laboratory. The size, height of yellow sticky trap had impacts on attraction, in which 390 cm2 was better than other sizes, and 0 cm away from ground was better than other heights. Application of yellow sticky trap had no effect on the occurrence of next generation. Therefore, yellow sticky trap can be recommended to monitor the occurrence of adults in the field, but not for the pest control.