摘要
目的评价中层取水式拦螺网防螺效果。方法根据"中层取水"原理,改进拦螺网,在拦网中层设取水口,防止堵塞阻水,并选择有螺河道电灌站进水口及其灌渠进行现场试验。在电灌站进水口不同位置投放染色钉螺,观察钉螺被水泵抽吸情况,评价拦螺网防螺效果,统计拦螺网直接费用。结果中层取水式拦螺网现场拦螺效果达100%,直接费用为11030元。结论中层取水式拦螺网防螺效果好、制作和安装简便,适用于南水北调东线工程应急防螺和有螺地区电灌站防止钉螺扩散。
Objective To evaluate the effectiveness of blocking diffusion of Oncomelania snails with the blocking network via collecting water from middle layer. Methods According to the principle of the installation preventing snails via collecting water from middle layer without snails, the blocking network was manufactured. The field test of the blocking diffusion of snails with the blocking network was carried out in the electric pumping station and the irrigation located in the area with snails. The snails stained were put into the water inlet of the pump when the pump was actuating, and the snails pumped were observed during the test period. The cost of the test was also calculated. Results The rate of blocking diffusion of snails with the blocking network was 100%, and the direct costs were only 11 030 CNY. Conclusions The blocking network via collecting water from middle layer has good effect for prevention of snail dispersal. It is simple for manutacturing and installation, and suitable for emergency blocking diffusion of snails in the east route of South-to-North Water Diversion Project and the electric pumping station with snails.
出处
《中国血吸虫病防治杂志》
CAS
CSCD
北大核心
2011年第3期311-313,共3页
Chinese Journal of Schistosomiasis Control
基金
江苏省科技支撑(社会发展)项目(BE2008632)
国务院南水北调办公室资助项目
江苏省卫生厅项目(X200704)
关键词
血吸虫病
南水北调东线工程
钉螺
中层取水拦螺网
Schistosomiasis
East route of South-to-North Water Diversion Project
Oncomelania snail
Blocking network for Oncomelania snails via collecting water from middle layer
