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由于我局地处亚热带,气温高、湿度大,旅客列车上德国小蠊繁殖快,密度高,是我局旅客列车的主要害虫。为了掌握列车上德国小蠊的消长规律,有的放矢地消除德国小蠊危害,作们从82年至86年,连续五年对管内旅客列车上德国小蠊的季节消长及分布规律进行了动态观察。
As our bureau is located in the subtropical high temperature and humidity, German cockroaches on passenger trains breed fast, high density, is the main pest of the passenger train of our bureau. In order to grasp the growth and decline of German cockroaches on the train and to eliminate the harm of German cockroach, the authors studied the seasonal fluctuation and distribution of German cockroaches in passenger trains for 82 years to 86 years.