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目的观察氯硝柳胺乙醇胺盐粉剂泥敷灭螺在云南鹤庆县血吸虫病流行区的应用效果。方法在鹤庆县血吸虫病流行重疫区金墩乡高原峡谷型西甸行政村和高原平坝型孝廉行政村选取钉螺分布较广、钉螺密度较高的自然村的重点自然片,分别于2008和2009年开展泥敷灭螺应用试验和灭螺效果观察,同时对氯硝柳胺药泥浸出液进行了现场和室内杀螺试验。结果 2008年泥敷灭螺区钉螺面积下降了98.26%,有螺框出现率下降了98.25%,活螺平均密度下降了98.28%;2009年泥敷灭螺区钉螺面积下降了91.77%,有螺框出现率下降了94.62%,活螺平均密度下降了96.63%;2009年泥敷区灭螺后30 d钉螺死亡率达到90.04%,60 d钉螺死亡率达到97.50%,90 d以后钉螺死亡率为100.00%;现场沟渠浸出液和室内药土浸出液杀螺试验显示,随着时间的延长钉螺的死亡率降低。结论氯硝柳胺泥敷灭螺效果较好,在钉螺分布为片状、钉螺密度高的重点自然片和地段具有一定的推广使用价值。
Objective To observe the application effects of niclosamide ethanolamine salt powder Mucuna in the epidemic area of schistosomiasis in Heqing County, Yunnan Province. Methods Natural natural villages with wide snail distribution and high snail density were chosen as the natural villages in Xidandao plateau-type Xidian village and Pingba-type Xiaolian village in Hendun County, Heilongjiang Province. And in 2009 to carry out the mud snail application test and snail effect observation, and the niclosamide mud leachate field and indoor snail test. Results In 2008, the snail area in the snail area decreased by 98.26%, the occurrence rate of the snail frame decreased by 98.25% and the average density of live snails decreased by 98.28%. In 2009, the snail area in the snail area decreased by 91.77% The occurrence rate of snails decreased by 94.62% and the average density of live snails decreased by 96.63%. In 2009, the mortality rate of snails reached 90.04% at 30 days after snail decay in 2009 and the death rate of snails at 60 days reached 97.50%. The mortality of snails after 90 days was 100.00%. On-site ditch leachate and indoor soil leaching test showed that the mortality of snails decreased with time. Conclusion The niclosamide mud - smelling effect is better, and it has a certain value to promote and use in the key natural slices and lots with snail distribution as flake and snail density.