In order to estimate their trapping effect on wheat aphids and their natural enemies,yellow sticky card traps were setup in wheat fields at the Luancheng agro-ecosystem station of the Chinese Academy of Science in Hebei Province in 2010 and 2011. More than 30 species of insect from 7 orders were trapped; the dominant species captured was a fly species rather than wheat aphids. The effectiveness of yellow sticky card traps for trapping wheat aphids was significantly correlated to the population size per 100 tillers when application of chemical pesticides in sampling area were under control and was not significant without such control. Yellow sticky card traps can kill a large number of natural enemies of the wheat aphid. The ratio of trapped natural enemies and pest insects before and after the grouting stage were both greater than 1,with the maximum ratio up to 45. 50. In view of the effectiveness of yellow sticky card traps in catching wheat aphids and their natural enemies and the potential influence of weather conditions and other factors,these traps are not recommended for controlling wheat aphids but can be used as a tool for monitoring these pests.

<正>辽宁省凌源市是我国最大的球根种球和鲜切花生产基地之一。2007年花卉生产面积2.8万亩,切花生产主栽品种为百合。凌源的花卉生产有20余年的栽培历史,当地花农有较丰富的花卉栽培经验,但由于科学技术支撑不够,随着生产的发展土壤连作障碍等问题越来越突