title: [Molluscicidal effect of plastic film mulch covering method].
abstract: OBJECTIVE
  To evaluate the molluscicidal effect of the plastic film mulch covering method.
  
  
  METHODS
  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.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  The plastic film mulch covering method has a great molluscicide effect in the hill subtype and water network type of schistosomiasis epidemic areas.
authors.affiliation: Hubei Provincial Academy of Preventive Medicine, Hubei Center for Disease Control and Prevention, Wuhan 430000, China.
authors.forename: Han-cheng
authors.initials: HC
authors.lastname: Liu
authors.affiliation: Hubei Provincial Academy of Preventive Medicine, Hubei Center for Disease Control and Prevention, Wuhan 430000, China.
authors.forename: Cheng-hui
authors.initials: CH
authors.lastname: Zhong
authors.affiliation: Zhongxiang Municipal Station of Schistosomiasis Control, Hubei Province, China.
authors.forename: Guo-qing
authors.initials: GQ
authors.lastname: Wan
authors.affiliation: Zhongxiang Municipal Station of Schistosomiasis Control, Hubei Province, China.
authors.forename: Bing
authors.initials: B
authors.lastname: Cheng
authors.affiliation: Zhongxiang Municipal Station of Schistosomiasis Control, Hubei Province, China.
authors.forename: Yu-xiang
authors.initials: YX
authors.lastname: Wang
authors.affiliation: Zhongxiang Municipal Station of Schistosomiasis Control, Hubei Province, China.
authors.forename: Rui-ling
authors.initials: RL
authors.lastname: Tian
authors.affiliation: Zhongxiang Municipal Station of Schistosomiasis Control, Hubei Province, China.
authors.forename: Ai-dong
authors.initials: AD
authors.lastname: Cheng
authors.affiliation: Yangxing Municipal Station of Schistosomiasis Control, Hubei Province, China.
authors.forename: Zhu-guo
authors.initials: ZG
authors.lastname: Xia
authors.affiliation: Zhongxiang Municipal Station of Schistosomiasis Control, Hubei Province, China.
authors.forename: Shuang
authors.initials: S
authors.lastname: Yang
authors.affiliation: Jingmen Center for Disease Control and Prevention, Hubei Province, China.
authors.forename: Zhao-jun
authors.initials: ZJ
authors.lastname: Ding
authors.affiliation: Hubei Provincial Academy of Preventive Medicine, Hubei Center for Disease Control and Prevention, Wuhan 430000, China.
authors.forename: Shun-xiang
authors.initials: SX
authors.lastname: Cai
mesh_terms: D000818:Animals; D008975:Molluscacides / Q000633:toxicity*; D010571:Pest Control / Q000295:instrumentation / Q000379:methods*; D010969:Plastics; D012908:Snails / Q000187:drug effects* / Q000254:growth & development
chemical_list: D008975:Molluscacides; D010969:Plastics