Liu Han-cheng, Zhong Cheng-hui, Wan Guo-qing, Cheng Bing, Wang Yu-xiang, Tian Rui-ling, Cheng Ai-dong, Xia Zhu-guo, Yang Shuang, Ding Zhao-jun, Cai Shun-xiang
Hubei Provincial Academy of Preventive Medicine, Hubei Center for Disease Control and Prevention, Wuhan 430000, China.
Zhongxiang Municipal Station of Schistosomiasis Control, Hubei Province, China.
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi. 2013 Aug;25(4):399-401.
To evaluate the molluscicidal effect of the plastic film mulch covering method.
In the barren land with a lot of Oncomelania hupensis snails, 3 experimental groups were set up, in which respectively using 3 different methods: a simple plastic film mulch covering method, film assisted with ammonium bicarbonate, and film assisted with amine molluscicide. In the canals, two experimental groups were set up, in which respectively using 2 different methods: simple plastic film mulch covering method and film assisted with ammonium bicarbonate. In above-mentioned areas, obstacles were cleared artificially. In each experiment group, 4 observation spots were set up, and 100 living snails were pot in each spot, and then, the plastic film mulch was evenly covered. The status of the snails was observed 3, 7, 15 and 30 days after the intervention.
In the barren land, the snail death rates of the simple plastic film group were 20.77% and 96.92% 15 days and 30 days after the intervention, respectively. The snail death rate of the film assisted with amine molluscicide group was 80.46% 3 days after the intervention. In all the experiment groups, the snail death rates were from 96.92 to 100% 30 days after the intervention.
The plastic film mulch covering method has a great molluscicide effect in the hill subtype and water network type of schistosomiasis epidemic areas.
评估地膜覆盖法的灭螺效果。
在有大量钉螺的荒地上，设置3个实验组，分别采用3种不同方法：单纯地膜覆盖法、地膜辅助碳酸氢铵法、地膜辅助胺类灭螺剂法。在沟渠中，设置2个实验组，分别采用2种不同方法：单纯地膜覆盖法和地膜辅助碳酸氢铵法。在上述区域人工清除障碍物。每个实验组设置4个观察点，每个点投放100只活螺，然后均匀覆盖地膜。干预后3天、7天、15天和30天观察螺的情况。
在荒地上，单纯地膜组干预后15天和30天的钉螺死亡率分别为20.77%和96.92%。地膜辅助胺类灭螺剂组干预后3天的钉螺死亡率为80.46%。所有实验组干预后30天的钉螺死亡率为96.92%至100%。
地膜覆盖法在山丘型和水网型血吸虫病流行区有很好的灭螺效果。
