【Abstract】 Objective In order to grasp the dynamic regularity of the population distribution and seasonal fluctuation of cockroach in Jilin province. Methods Sticky paper to trap cockroach was used in the surveillance. Results According to the surveillance results, Blattella germanica was the dominant species, accounting for 95%. However, the population density of Periplaneta americana was very low. There were two active peaks in the whole year, one was in March, the other was between July and September. Conclusion B.germanica was the dominant species in Jilin, so it should put the emphasis on its control in the future.

Objective:To compare the residual effect of 25% COOPEX and 10% FENDONA.Methods:Force contacting method.Results:The long-lasting efficacy of 25%COOPEX and 10%FENDONA against Blattella germanica was observed for 12 weeks on the glasses,the death rate was 80%-100%;For the painted wood,the death rate was 60%-100%;For the cement,the death rate was 66%-100%.Conclusion:The long-lasting efficacy of 10%FENDONA was better than that of the 25%COOPEX.

Objective:To appraise the effect of BACTIVEC and GRISELESF for killing mosquito larvae and study the best way to appraise.Methods:The effect of two biotic pesticides for killing mosquito larvae was tested by the locale and laboratory tests,To observe the mosquito larvae and pupae density degression rate.Results:In the locale,after spraying 3rd days,for BACTIVEC 5 ml/m ²,the density degression rate of the mosquito larvae and pupae was 97.5% and 92.7%.After 5th,7th,and 15th day,the density degression rate was usual kept up over 97%.Another,for GRISELESF,10 ml/m ²,after 3rd day,the density degression rate of mosquito larvae was 96%,and the rate of pupae was only 20%.But 5 to 15 days later,the effect of control pupae by GRISELESF was approached to BACTIVEC.The results of labortory was similar to locale.Conclusion:The effects of both biotic pesticides were noticeable to control the mosquito larvae,and the former outbalanced the latter.

Objective:By comparing palatabilites and death rates of five acute rodenticides and mixtures of it and picricid,laboratory basis was provided for using of picricid.Methods:Adopting tests of the choice feeding and the no choice feeding with mice.Results:The feeding indexes of Zinc phosphide,Silatranes,Gophacide,Desmethylbromethalin and Bromethalin were respectively 0.57,only eating a few grains,0.03,0.93,2.1;After adding picricid,the feeding indexes were separately 1.5,only eating a few grains,0.38,0.93and 5.2.The death rates were separately 100%,90%,100%,100% and 100%;After adding picricid the death rates all were 100%.Conclusion:It has satisfactory killing effect against mice that picricid and the five acute rodenticides are mixtured.

This article analysed the circumstances on cockroach's distribution of population density, infestation rate, insecticide resistance, measure and effect of control. The important targets of cockroach's control in the city area of all province are Blattella grermanica and Periplaneta americana. The average density index declined from 1.42 body/box in 1991 to 0.19 body /box in 1993; The average infestation rate was 2.82%; The lethal doses of most insecticides in use to Blattella grermanica increased in varying degree. The environmental management is the measure for the permanent control of cockroach. The insecticide's rational use is the key to postponing and reducing cockroach's insecticide-resistance.