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宝应县位于江苏省中部 ,地处里下河水网地区 ,是我国钉螺分布的最北界 (北纬 3 3°1 5′)。全县历史累计钉螺面积43 9.1 hm2 ,其中内陆面积 1 0 7.9hm2 ,湖滩面积 3 3 1 .2 hm2 。通过 3 0多年积极防治 ,1 987年经省市考核“达标”后 ,进入监测阶段。现将螺情监测结果报告如下
Located in the central part of Jiangsu Province, Baoying County is located in the area of the Lixia River and is the northernmost boundary of the snail distribution (3 3 ° 15 ’N). The county has accumulated a total area of 43 9.1 hm2 snails, of which an inland area of 1 0 7.9hm2, beach area of 3 3 1 .2 hm2. After more than 30 years of active prevention and control, it passed the examination of provinces and cities in 1987 and reached the monitoring stage. Now snail monitoring results are reported below