关键词: 动车组列车, 蜚蠊密度, 灭蠊方法

Abstract:

Objective　The characteristics of the internal environment of CRH (China Railway High?Speed) trains were analyzed to provide the basis for development of the specialized roach control measure for CRH trains based on the living habits of cockroaches therein. Methods　A thorough investigation into the CRH trains of a certain railway bureau was conducted (17 carriages, 230 compartments including the driver’s room) to monitor the cockroach density in the trains. SPSS was used to identify the critical control points for elimination of cockroaches for the CRH trains. Results　The infestation rate of adult and nymphal cockroaches in the CRH trains was 19.13%. The highest density of cockroaches was found at the buffet, fresh cabinets and under the seats. Gel baits for cockroach (containing 1% sulfluramid each tablet) were applied for testing; finally, the average cockroach density was less than of one per compartment. Conclusion　The cockroach control method suitable for CRH trains was developed based on the living habits and distribution patterns of cockroaches. Experimental results showed significant difference in the control effect between the developed method and the original method (insecticide residual spraying).

Key words:  China Railway High?Speed train, Cockroach density, Cockroach control method