安徽省韭菜韭蛆成虫发生动态监测及防治适期的选择

Monitoring of Chinese Chive Maggot Adults Occurrence in Anhui Province and Selection of Optimum Control Period

为明确安徽省韭菜韭蛆成虫发生动态,寻找防治最佳时期。该研究以安徽北部亳州市和中部合肥市为监测点,利用黄板诱集监测韭菜韭蛆成虫发生动态,并通过田间药效试验确定韭蛆防治适期。结果表明:大棚内韭菜韭蛆成虫全年有6个发生高峰,主为害代为越冬代、第1代和第2代;露地韭菜韭蛆成虫全年有5个发生高峰,主为害代为越冬代和第1代。此外,韭蛆成虫高峰期后1周施药处理防效最高,施药后2周和4周防效均在90%以上。安徽省韭菜韭蛆成虫的发生,呈春秋两季多峰型,大棚内韭菜防治关键期为当年11月,翌年2月中下旬及4月上中旬;露地韭菜防治关键期为11月及翌年3月下旬至4月上旬。

In order to define the occurrence of Chinese chive maggot adult in Anhui Province,and look for the optimum time for prevention and control,two monitoring sites in Bozhou and Hefei were selected,which were respectively in northern and middle of Anhui Province.The annual occurrence of Chinese chive maggot adults was monitored by using yellow sticky trap,and the selection of optimum control period was using field efficacy test.The results showed that in the two monitoring sites,there were 6 peaks of maggot adult throughout the year in greenhouse,the generations which damaged chive seriously were overwinter generation,the first generation,and the second generation.Meanwhile,there were 5 peaks of maggot adult throughout the year for open-field,and the generations which damage chives seriously were overwinter generation and the first generation.In addition,the optimum control period was one week after adult emergence peak,and the control effect was more than 90% for2 weeks and 4 weeks after pesticide treated.The occurrences of Chinese chive maggot adults in Anhui Province were multi-peaks type in spring and autumn.The key period for Chinese chive maggot control in greenhouse was November,mid-late February,and early-mid April in next year;the key period for open-field control was November and late March to early April in next year.