CAJ | 학술논문

目的：比较螺威（TDS）和四聚?杀螺胺（MNSC）的现场杀螺效果。方法选择有钉螺孳生的小型有螺沟渠环境为试区，分别采用浸杀法和喷洒法对TDS和MNSC的杀螺效果进行评价。TDS和MNSC浸杀试验浓度分别为2.5 g/m3和2 ml/m3，喷洒试验剂量分别为3 g/m2和2 ml/m2；设50%氯硝柳胺乙醇胺盐可湿性粉剂（WPN）为对照组，浸杀浓度和喷洒剂量为2 g/m3和2 ml/m2。结果 TDS浸杀24 h钉螺死亡率为90.70%，喷洒7 d死亡率为81.40%，各观察时点杀螺效果差异均无统计学意义（P均＞0.05）。喷洒后1 d ，TDS组钉螺死亡率低于MNSC组（P＜0.01），喷洒3 d后两组死亡率相近（P＞0.05）。MN-SC浸杀24 h钉螺死亡率为99.17%，喷洒1 d为66.07%；WPN浸杀24 h钉螺死亡率为97.51%，喷洒1 d为71.43%，两者差异均无统计学意义（P均＞0.05）。结论 TDS具有良好的杀螺活性和药效稳定性，现场杀螺效果与MNSC相近，但杀螺敏感性低于MNSC。
목적：비교라위（TDS）화사취?살라알（MNSC）적현장살라효과。방법선택유정라자생적소형유라구거배경위시구，분별채용침살법화분쇄법대TDS화MNSC적살라효과진행평개。TDS화MNSC침살시험농도분별위2.5 g/m3화2 ml/m3，분쇄시험제량분별위3 g/m2화2 ml/m2；설50%록초류알을순알염가습성분제（WPN）위대조조，침살농도화분쇄제량위2 g/m3화2 ml/m2。결과 TDS침살24 h정라사망솔위90.70%，분쇄7 d사망솔위81.40%，각관찰시점살라효과차이균무통계학의의（P균＞0.05）。분쇄후1 d ，TDS조정라사망솔저우MNSC조（P＜0.01），분쇄3 d후량조사망솔상근（P＞0.05）。MN-SC침살24 h정라사망솔위99.17%，분쇄1 d위66.07%；WPN침살24 h정라사망솔위97.51%，분쇄1 d위71.43%，량자차이균무통계학의의（P균＞0.05）。결론 TDS구유량호적살라활성화약효은정성，현장살라효과여MNSC상근，단살라민감성저우MNSC。
Objective To compare the molluscicidal effects between“Luo-wei”(TDS),a plant molluscicide in 4 percent, and metaldehyde and niclosamide(MNSC)in the field. Methods A natural ecological environment with Oncomelania hupensis was selected as the test area,the test concentrations of TDS and MNSC were 2.5 g/m3 and 2 ml/m3 respectively by the immersion method;the test doses of TDS and MNSC were 3 g/m2 and 2 ml/m2 respectively by the spray method;the doses of WPN in a control group were 2 g/m3 and 2 g/m2 respectively by the two methods above-mentioned. The molluscicidal effects between TDS and MNSC were compared by using the synchronous design method and parallel comparative method. Results In the TDS group,the death rate of snails was 90.70%by immersion for 24 hours,reached to 81.40%after spraying for 7 days,and there were no significant differences among the observation time points in molluscicidal effects(P>0.05). One day after the spraying,the death rate of snails was less in the TDS group compared with that in the MSCN group(P<0.01),but the death rates of snails were similar in both groups 3 days after the spraying(P>0.05). In the MSCN group,the death rate of snails was 99.17%by immersion for 24 hours,reached to 66.07% by spraying for 1 day. In the WPS group,the death rate of snails was 97.15% by immersion for 24 hours,reached to 71.43%after spraying for 1 day,and there were no significant differences(both P>0.05). Conclusion TDS has a good molluscicidal activity and stable efficacy,and the molluscicidal effect of TDS is similar to that of MSCN in the filed, but the molluscicidal sensitivity of TDS is lower than that of MSCN.