开化县汶山乡在市、县卫生防疫站的协助下,从1987年1月开始,在全乡境内推广灭鼠毒饵盒,实行室内灭鼠经济承包责任制,坚持常年灭鼠。通过一年的尝试,据按季考核,全乡室内平均鼠密度已从原来的23.20%(219/944)降到2.79%(227/8122),平均灭鼠率为87.97%。具体作法是: With the assistance of the municipal and county health and epidemic prevention stations, Munshan Township in Kaihua County started to promote detoxification bait boxes within the territory of the whole country from January 1987 and implemented indoor responsibility system for economic control of rodent control, persisting in perennial rodent control. After a year of trying, according to the quarterly assessment, the average indoor rat density in the whole country dropped from 23.20% (219/944) to 2.79% (227/8122) with an average of 87.97% of the rats. The specific approach is: