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本文报告以1981年春季江苏全省钉螺普查数据结合近年来有关调查研究资料对全省钉螺现状作综合分析的结果。全省有螺大队数已下降92.4%,有螺面积已下降99.5%。但现存不到1%的有螺面积,其分布比较散,有的地方钉螺密度比较高,还有感染性钉螺;现存钉螺的雌螺比例大,繁殖快,并且还能扩散。另外还分析了1981年春季有螺面积出现波动的原因,并对今后的查、灭螺对策提出了建议。
This paper reports the results of a comprehensive analysis of the current status of snail snail in Jiangsu province in the spring of 1981 with the data of snail surveys in Jiangsu Province and the relevant research materials in recent years. The number of snail brigade in the province has dropped by 92.4% and that of snail has dropped by 99.5%. However, less than 1% of existing snails exist. Their distribution is rather scattered. In some places, the density of snails is relatively high, and infectious snails are also present. The proportion of female snails in existing snails is large, and they multiply rapidly and can spread. In addition, the reasons for the fluctuation of the snail area in the spring of 1981 are also analyzed, and suggestions are put forward for the future investigation and snail control measures.