Study on the Cockroach Control Strategy at Top-Grade Railway Pass enger Station

Objective: To explore the cockroach control strategy at top-grade rail way passenger station by observing the species, habitats of the cockroach and st udying the effects of varied cockroach-killing methods at different sites. Methods: The integrated procedures included principal environme ntal improvement toget her with intensifying survey, appropriate cockroach-killing ways in different si tes and focusing on the key places. Result: The cockroach density reduced by 77.99%～90.26% and 77.48%-98.24% at different surroundings, respe ctively in 1998 and 1999 in comparison with that of 1997's, before applying the integrated procedures, and the ovum density dropped to 0-0.03 and 0 respect ively. The cockroach de nsity of some sites cut down on 66.67%-88.89%, 74.11%-88.00%, 70.00%-79.07%　 and 70.59%-75.71%, respectively at 3, 7, 15 an d 30 days after spraying pesticide as c omparing with that of when cockroach-proof steps hasn't been taken. The pivots c ockroach density was 1.16-1.30 and 0.38-1.18 times the average while strengthening the cockroach killing of pivots in comparison with 2.38 -2.93 times of the contrast. At the same time the amount of insecticide dec reased and the fund was saved. Conclusion: Promising effic iency on cockroach con trol was gained at top-grade railway passenger station, some social and economic benefits were obtained.