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目的调查与分析江苏省丹阳市水系钉螺消长与扩散趋势,探讨有效的钉螺防控措施。方法综合利用历史资料和常规螺情监测数据,按水系分析丹阳市有螺面积变化趋势以及扩散情况。结果丹阳市境内钉螺主要由外来水系输入,经通江河道向内陆扩散,并呈上游向下游、河道至灌渠扩散趋势。结论通江河道是江滩钉螺向内陆扩散的主要通道,灌溉系统则是钉螺向内陆灌区扩散的重要途径。应采取灭螺与防螺相结合的钉螺控制策略。
Objective To investigate and analyze the trend of growth and spread of Oncomelania snails in Danyang City, Jiangsu Province, and to explore effective control measures. Methods Comprehensive utilization of historical data and conventional snail monitoring data, according to water system analysis of the trend and spread of snail area in Danyang City. Results The snail in Danyang City was mainly imported from the external water system, and inland diffused through the thoroughfares, and showed the tendency of spreading from upstream to downstream and from the channel to the irrigation channel. Conclusion The Tongjiang River is the main channel for inland spreading of Oncomelania and the irrigation system is an important way for the snail to spread inland irrigation area. Snail control strategy should be taken to combine snail control with snail control.