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承德是河北省林业大市,林业资源约占全省的1/2,全市林业有害生物年发生面积在5.33～6万公顷左右。“十一五”期间,全市累计完成防治作业面积达22.67万公顷,其中防治松毛虫7.67万公顷、美国白蛾5.2万公顷。到“十一五”末,承德市林业有害生物成灾率为0,无公害防治率为87%,测报准确率为90%种苗产地检疫率为98.5%。
Chengde is a major forestry center in Hebei Province, with forestry resources accounting for about one-half of the province’s total. The annual area of forestry pests in the city is between 5.33 and 60,000 hectares. During the 11th Five-Year Plan period, 226,700 hectares of prevention and control operations have been completed in the city, of which 76,700 hectares are for controlling pine caterpillars and 52,000 hectares for American white moths. By the end of the Eleventh Five-Year Plan period, the rate of forestry pest occurrence in Chengde City was 0, that of pollution-free prevention and control was 87%, and the accuracy rate of reporting was 90%. The quarantine rate of origin of seedlings was 98.5%.