金纹细蛾在苹果·梨·桃上的种群动态研究

The Study of Population Dynamics for Lithocolletis ringoniella in Apple,Pear,Peach

[目的]明确金纹细蛾种群在山西省晋中地区苹果、梨、桃3种果园中的发生规律。[方法]采取性信息素监测的调查方法,分析其种群变化。[结果]3种果园金纹细蛾发生动态一致,第1代高峰始于5月底;6月种群呈世代交替,7月受降雨影响种群数量下降,一直到9月底10月初蛰伏越冬;在种群数量上苹果园>梨园>桃园,且差异显著,日诱捕量分别为149.4、137.2、90.4头/d。[结论]明确了金纹细蛾在3种果园中的发生规律,为对其进行测报提供了理论基础,为及时防控提供了科学依据。

[Objective] The aim of this experiment was to investigate the population dynamics and occurrence regularity of Lithocolletis ringoniella in apple,pear,peach orchard.[Method] The population by sex pheromone monitoring was analyzed.[Results] The results showed that：occur dynamically of Lithocolletis ringoniella in 3 kinds of orchards was similar,the first generation peak began in late May; generational population overlay in June,populations reduced by rain in July,the population disappeared until the end of September and early October,in order to winter dormant.The population the number was apple ＜ pear ＜ peach,and the difference was significant,the catches was 149.4,137.2,90.4/d by sex pheromone trapping.[Conclusion] The study discovered the difference of Lithocolletis ringoniella occurrence regularity in 3 kinds of orchards,which would help us to forecast and control it in modern agricultural production.