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首页> 美国卫生研究院文献>Bulletin of the World Health Organization >Large-scale application of Bayluscide and sodium pentachlorophenate in the Egypt-49 project area
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Large-scale application of Bayluscide and sodium pentachlorophenate in the Egypt-49 project area

机译：Bayluscide和五氯酚钠在埃及49项目区的大规模应用

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摘要

A study has been undertaken to evaluate the comparative efficacy of two molluscicides—Bayluscide and sodium pentachlorophenate—in controlling the snail population in a complete watershed and to obtain an analysis of the comparative costs of application. Main canals were treated by the drip-feed method, utilizing the water-carriage system, and other watercourses by spraying. Both molluscicides were found to be highly effective, the snail mortality rates exceeding 98%. Treatment involving a first application in May and June and a second one some five months later kept snail densities very low throughout the year.When costs were compared on the basis of unit volume of water treated, for main canals and other watercourses separately, it was found that the chemical costs were very similar; so were the operational costs for the main canals, but in the other watercourses the cost of applying sodium pentachlorophenate was nearly three times that for Bayluscide. For this reason, and because of the toxic properties of the former compound, it is concluded that Bayluscide is the preferred molluscicide in the Egypt-49 project area and probably also in the rest of the Nile Delta area.
机译：已经进行了一项研究，以评估两种杀软体动物剂（Bayluscide和五氯酚钠）在控制整个流域中的蜗牛种群方面的比较功效，并获得对比较施用成本的分析。主渠通过滴水法，利用水运系统和其他水道进行喷洒处理。发现这两种杀软体动物剂都非常有效，蜗牛的死亡率超过98％。每年5月和6月进行第一次处理，然后在五个月后进行第二次处理，使全年的蜗牛密度非常低。根据处理的水量比较成本时，分别对主渠和其他水道进行了计算。发现化学费用非常相似；主要运河的运营成本也是如此，但是在其他水道中，使用五氯酚钠的成本几乎是贝卢西德的三倍。因此，由于前一种化合物的毒性，可以得出结论，在埃及49项目区以及尼罗河三角洲其他地区，贝卢西德是首选的杀软体动物剂。

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