两种斑潜蝇在豇豆上发生规律及防治技术

The Occurrence Characteristic and Control Techniques of Liriomyza Sativae and L. Huidobrensis

在豇豆田对美洲斑潜蝇和南美斑潜蝇发生规律及危害情况的系统调查发现 ,两种斑潜蝇在豇豆上混合发生 ,始花期为危害始盛期 ,平均单叶虫害面积约达 3 1 %～ 50 % ;美洲斑潜蝇和南美斑潜蝇幼虫田间高峰期分别为 6月 9日、6月 2 5日和 6月 9日、6月 2 3日 ;蛹的高峰期均为 6月 1 9日和 7月 1日 ;成虫高峰期均为 6月 2 1日和 7月 3日。几种药剂防治试验表明 ,绿菜宝 ( 1 50 0倍 )、虫螨克 ( 2 0 0 0倍 )防效达 73 %以上 ,爱福丁 ( 2 0 0 0倍 )防效只有 4 0 .8%。

The occurrence of Liriomyza sativae Blanchard and L. huidobrensis were studied in cowpea field in Shannxi. This two species occured together in the cowpea field and begin to do harm from florescence. The average area of destruction in a leaf was 31%～50%. The fastigium of larva occurrence, the former was on June 9 and June 25, the later was on June 19 and June 23. The peak of pupae, the former was on June 19, the later was on July. The peak of adults, the former was on June 21; the later was on July 3. The results of controlling this two species in the field spayed insecticide of Lücaibao and Chongmanke was over 73%. The controlling result of Aifuding was 40.8%.