通过 1996— 1999年调查研究表明 :在余庆县发生的检疫害虫有美洲斑潜蝇加南美斑潜蝇两种 ,危害植物达 2 7种 ,发生程度因作物和季节而异 ,3月中旬始见 ,4月中旬～ 5月中旬为第 1个危害高峰期 ,7月分因高温种群数量急剧减少 ,8月中旬～ 9月中旬为第 2个危害高峰期。根据其发生特点 ,提出了“加强植物检疫 ,实施综合治理”的防治策略 The investigation and research from 1996 to 1999 showed that there are two kinds of quarantine pests occurring in Yuqing County, including two species of Liriomyza sativae and L.sinensis, which endangered 27 species of plants. The degree of occurrence varies with the crops and the seasons, and from the middle of March See mid-April to mid-May for the first peak of the crisis, July due to a sharp decrease in the number of high-temperature populations, mid-August to mid-September as the second peak of the crisis. According to its occurrence characteristics, put forward the strategy of “strengthening plant quarantine and implementing integrated management”