山东泰安地区金纹细蛾发生规律研究

Occurrence rule of Lithocolletis ringoniella in Taian of Shandong province

为明确其在山东泰安地区的发生规律与为害特点,有效防治金纹细蛾。2008～2012年连续5年用信息素诱捕法检测金纹细蛾成虫的发生动态,并将其与气象因子进行相关分析。结果显示,山东泰安地区的金纹细蛾1年发生5代,其世代历期与温度密切相关,与日相对平均湿度极显著负相关,而其发生量与降水量、日相对湿度呈显著正相关。当日平均温度在25～27℃、湿度为80.0%～100.0%时,世代历期缩短,成虫数量明显增加。在一定的温度范围内,金纹细蛾的发生量随着湿度的增加而增加,上代成虫羽化高峰期降水量直接影响下代金纹细蛾的发生量。

To better understand the life cycle and damages of Lithocolletis ringoniella in apple orchard in Taian region of Shandong province, the occurrence of adult was monitored by pheromone traps in 2008-2012, and the correlation between the occurrence of adult and the meteorological factor was analyzed for establishing a short-term forecast model of the pest. The results showed that there were five generations each year in Taian of Shandong provence. Generation duration was closely related to daily average temperature and was negatively correlated with daily average humidity, and the emergence size was positively correlated with the precipitation and daily average humidity. When daily average temperature was 25- 27 ℃ and daily average humidity was 80. 0% - 100. 0%, generation duration was shortened and emergence size was increased. Within a certain range of temperature, the emergence size of Lithocolletis ringoniella increased with the increase of humidity, and the precipitation in parental adult at emergence peak directly affected the emergence size of next generation.