白粉虱在焦作野外可以越冬白粉虱是瓜菜，花卉等作物的重要害虫，近年来危害逐年加重。为明确河南省北部焦作地区白粉虱春季虫源，做了如下调查与镜检。１９９５年秋焦作农科所农场曾发生白粉虱，入冬以后草莓田未作任何覆盖，四周也没有遮挡物，大部分老叶已被冻干。１９... Whitefly winter overwinter in Jiaozuo Whitefly is a vegetable pest, flowers and other crops of pests, the harm has increased year by year. In order to clarify the spring insect source of whiteflies in Jiaozuo, Henan Province, the following investigation and microscopic examination were done. Autumn 1995 Jiaozuo agricultural farms have whiteflies, strawberries after winter did not make any coverage, there are no shelter around, most of the old leaves have been freeze-dried. 19 ...