不同年生韭菜田中韭菜迟眼蕈蚊种群动态研究

摘要

2014年3-12月采用挖根取样调查法和色板诱捕法,对不同年生韭菜田中韭菜迟眼蕈蚊各个虫态种群发生数量进行系统调查.结果表明:韭菜迟眼蕈蚊在3年生和4年生韭菜田发生量最多;3-6月温湿度适宜,是各个虫态的发生高峰期;10-12月是第二个发生高峰期,但明显少于3-6月份;12月中下旬以老熟幼虫和少量蛹于韭菜鳞茎周围土中越冬.%By the methods of root-digged sampling survey and yellow sticky trapping, the population dynamic of Bradysia odoriphaga was investigated systematically in leek fields with different planting years from March to December in 2014.The results showed that the quantity of B.odoriphaga was the most in 3-or 4-year-old leek field.From March to June, the temperature and humidity were appropriate, all stages reached the peak.From October and December, the second peak occurred, but the quantity was more less than that in the first one.From the middle to late of December, the matured larva or pupa of B.odoriphaga overwintered in the soil around the leek.