临海市位于浙江中部沿海，气候和自然环境适宜蟑螂繁殖生长，城区蟑螂密度较高，危害较大。为此，1995年5月在城区12km‘范围内，开展了大面积灭蟑达标活动，取得初步成效，使城区蟑螂成、若虫侵害率从灭前的3696％降到灭后的1．61％，密度指数由373只／间降到171只川司；卵鞘? Linhai City, Zhejiang Province is located in the central coast of the sea, climate and natural environment suitable for breeding cockroaches, urban cockroach density is higher, more harmful. To this end, in May 1995 in the urban 12km ’range, to carry out a large area of ​​cockroach compliance activities, and achieved initial success, so that cockroaches into the city, nymphs infested rate from 3696% before extinction to 1.61% , The density index from 373 / down to 171 Sichuan Division; Egg sheath?