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[Analysis of cost-effectiveness of molluscacide combined with herbicide by spraying]
Objective:
To explore an economical and efficient molluscicidal method suitable for large area of nursery stock field.
Methods:
Two nursery stock fields with Oncomelania hupensis were selected as experimental sites, and an experimental group and a control group were set. In the experimental group, the molluscacide and herbicide were alternately used (a purification molluscicidal method) during the period of May to October, 2011. In the control group, grass shoveling and soil burying combined with molluscacide were used in the same period. The snail control effects of the two groups were observed and the costs of the two methods were analyzed.
Results:
No living snails were found in both experimental and control groups three consecutive years after the snail control intervention above mentioned. The costs of snail control intervention in the experimental group and control group were 0.90 and 1.80 Yuan/m2, respectively.
Conclusion:
The effect of the purification molluscicidal method in nursery stock field is satisfying, and the cost is lower.
