摘要
目的观察25%氯硝柳胺悬浮剂(SCN)在云南大山区的实验室和现场杀螺效果。方法在实验室和现场进行浸杀和喷洒法杀螺实验,比较SCN和50%氯硝柳胺可湿性粉剂(WPN)的杀螺效果。结果室内浸杀:WPN0.15mg/L(有效浓度0.075mg/L)浸杀24h无明显杀螺作用(与清水对照组钉螺死亡率差异无显著性,P>0.05),而SCN0.27mg/L(有效浓度0.067mg/L)浸杀24h钉螺死亡率为33.33%,有明显杀螺作用。WPN0.84mg/L(有效浓度0.42mg/L)和SCN1.50mg/L(有效浓度0.38mg/L)浸杀24h钉螺死亡率均为100.00%。室内喷洒:SCN2.0g/m2和WPN2.0g/m2杀螺效果相近(P>0.05)。现场浸杀:SCN2.0mg/L浸杀24h对螺袋内钉螺杀螺率和浸杀72h对沟内钉螺杀螺率优于WPN2.0mg/L。现场喷洒:SCN2.0g/m2和WPN2.0g/m2杀螺效果相近(χ32d=6.9×10-4,P>0.05;χ215d=9.8×10-5,P>0.05)。结论SCN2.0mg/L浸杀和2.0g/m2喷洒均有较好的杀螺效果,是一种高效、溶解度高的杀螺新剂型。
Objective To evaluate the molluscicidal effects of suspension concentrate of 25% niclosamide（ SCN ） in Yunnan mountainous regions. Methods Comparative studies on molluscicidal effect of SCN and wettable powder of niclosamide salt （WPN） by the immersion and spraying methods were performed in laboratory and field . Results In laboratory, by the immersion method for 24 hours, the molluscicidal effect of 0. 15 mg/L WPN （active content of 0.075 mg/L niclosamide ） was not significantly different from the effect of the control group fresh water （P〉 0. 05）,but the mortality of snails was 33. 33% in 0.27 mg/L SCN （active content of 0. 067 mg/L niclosamide ）. The mortality of snails was 100.00% by immersion for 24 hours in 0.84 mg/L WPN （active content of 0.42 mg/L niclosamide） and 1.50 mg/L SCN （active content of 0. 38 mg/L niclosamide ）. There was no significant difference between 2.0 g/m^2 SCN and WPN by spraying （P〉0.05）. In the field, the molluseicidal effect of 2 mg/L SCN （active content of 0. 5 mg/L niclosamide） was better than that of 2 mg/L WPN （active content of 1.0 mg/L niclosamide） by the immersion method, but being no significant difference by the spraying method. Conclusions The molluscicidal effect of 2.0 mg/L and 2.0 g/m^2 SCN （active content of 0.5 mg/L and 0.5 g/m^2 niclosamide） is good by the immersion and spraying method, and it is a novel form of niclosamide with high molluscicidal effect.
出处
《中国血吸虫病防治杂志》
CAS
CSCD
2006年第1期52-55,共4页
Chinese Journal of Schistosomiasis Control
关键词
氯硝柳胺悬浮剂
杀螺效果
钉螺
大山区
Suspension concentrate of niclosamide （ SCN ）
Molluscicidal effect
Oncomelania snail
Mountainous regions
