生态科技新城不同浓度氯硝柳胺药物灭螺效果对比研究

Objective To compare the snail eradication effects of different concentrations of niclosamide in Xingang Nan Tan, Ecological Science and Technology New City, and select the most effective, safe, and ecologically suitable concentration for the area. Methods A concentrated area for oncomelania breeding in the southern beach of Xingang, Ecological Science and Technology New City, was selected and divided into three experimental plots(A, B, and C). Each plot received 25%, 50%, and 80% concentrations of niclosamide, respectively, while an untreated area served as the blank control. Systematic sampling was used to monitor snail density, snail mortality rate, and adjusted snail mortality rate before treatment and at 7, 14, 21, and 28 days after treatment. Results The density of snails in each experimental group was compared 1 day before the application of the pesticide, and there was no statistically significant difference(P>0.05). After the application, at the same monitoring time, the average density of snails in different groups showed significant differences(P<0.05), and pairwise comparisons also had statistically significant differences(P<0.05). The density of snails in experimental group C was the lowest, followed by experimental group B and experimental group A. After applying different concentrations of niclosamide, at the same monitoring time, the mortality rate of snails in different groups showed significant differences(P<0.05). After applying the pesticide to the corresponding experimental plots for 28 days, there were no significant differences in environmental indicators such as water pH value, dissolved oxygen, water temperature, soil moisture content, and organic matter content(P>0.05). Conclusion The snail eradication effects of different niclosamide concentrations varied significantly, with the 80% concentration showing the best results, followed by the 50% concentration. Both concentrations can be considered for routine snail eradication in Xingang Nan Tan, Ecological Science and Technology New City.