【摘要】 本试验用黑光灯在粮仓内定时开关,探索了仓虫的趋光类群,对优势种的卵巢进行了解剖;并在夜晚按不同时间梯度诱集,同时还进行了光源距粮堆远近的虫口密度调查。结果初步探明常见仓库昆虫的多数种类具有趋光性,部分种类诱集量大且多为待产卵雌虫,晚间19至22时诱效最佳,且能保护仓内天敌;并发现对失去飞翔能力的昆虫亦有诱集作用。黑光灯诱集仓虫有一定应用价值,可在部分仓内结合应用并有待进一步研究。更多还原

【Abstract】 This study was meant to find out the Phototactic category of gran ary insects with ultraviolet. The trapping was carried on at different points of time at night and the insect was investigated on the basis of the distance of the light source from the grain heap. The results showed that most of granary insect species were Phototattic and some-of them were females which were soon to oviposit. The trapping from 1900 to2200 pm was most effective and not harmful to the natural enemies of insects. The insects which lost the ability to fly could also be trapped at this time . This method was Proved to be applicable to some barns.更多还原