南美斑潜蝇在昭阳区烤烟上的发生及防治

Occurrence and control of Liriomyza huidobrensis on tobacco in Zhaoyang District

南美斑潜蝇Liriomyzahuidobrensis每年 4～ 8月在云南省昭通市昭阳区的烤烟生育期间发生 5～6代 ,世代重叠 ,4月上旬为始发期 ,5月中旬至 6月上旬为发生高峰期。完成 1代的历期为 1 8～ 3 4d ;该虫对各种烟乡 (镇 )的危害属轻度发生 ,年发生面积 1 5 0 0～ 3 0 0 0hm2 ,集中危害烟株下部的 1～ 4个叶位叶片。同时提出了南美斑潜蝇的综合防治技术。

The ocuurrence of Liriomyza huidobrensis(Blanchard) in Zhaoyang District, Zhaotong City, Yunnan Province was investigated. The results indicate that this leafminer completes 5～6 overlapping generations per year from April to August in this area. The developmental duration of each generation was 18～34 d, the first generation occurred in the first ten days of April and the population peak took place from the middle ten days of May to the first ten days of June. A total of 1 500～3 000 hm2 of tobacco-growing areas were slightly damaged by this pest, and the larvae primarily fed on the lower 1～4 leave of young tobacco plants. Integrated control measures for this pest are proposed.