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本文研究了山丘型血吸虫疫区——仁寿县钉螺数量和分布特征。活螺密度为4.71只/0.11m2(2006年)和5.22只/0.11m2(2005年);活螺框出现率为34%(2006年)和39%(2005年)。活螺框出现率和活螺密度呈线性关系,表明钉螺的分布和数量存在特定的环境条件。钉螺主要分布在荒坡、沟渠和河滩等处,数量较大,这些土地利用类型为血吸虫病生态防治的重点地段。
In this paper, the quantity and distribution characteristics of snails in the schistosomiasis endemic area - Renshou County were studied. The live screw density was 4.71 per 0.11 m2 (2006) and 5.22 per 0.11 m2 (2005), and the percentage of live screws was 34% (2006) and 39% (2005). There was a linear relationship between the occurrence rate of live screw and live lobe density, indicating that the distribution and quantity of snails have specific environmental conditions. Snails are mainly distributed in the barren slopes, ditches and river beaches and other places, a large number of these types of land use is the key areas for ecological control of schistosomiasis.