Objective To study the effects of film mulching on Oncomelania hupensis and its eggs in soil. Methods The damp ridges with O. hupensis snails were selected and divided into niclosamide/film mulching group (sprayed with 50% wettable powder of niclosamide ethanolamine salt at 2 g/m2 and covered with mulch), film mulching group (covered with mulch without niclosamide spraying), and control group (not treated by molluscicidal measures). Snail investigation was conducted in different soil layers (0, 0-2, 2-5, 5-10, and 10-15 cm) at 40 d after niclosamide spraying plus film mulching and at 90 d after film mulching alone. Results At 40 d and 90 d after film mulching, the snail distribution in soil changed, increasing by degrees from soil surface to the deep layer of soil (R2＝0.9877; R2＝0.7619); compared with those of control group, the mortality of snails in soil was significantly higher (χ2＝281.198, P＜0.001; χ2＝47.970, P＜0.001), the average density of living snails was significantly decreased (Z＝-6.390, P＜0.001; Z＝-4.681, P＜0.001), and the number of young snails was lower (Z＝-6.733, P＜0.001; Z＝-5.131, P＜0.001). Conclusion Film mulching is effective in killing snails in soil and can control the reproduction and breeding of the second generation of snails.
ZHU Hongqing, ZHONG Bo, ZHANG Guirong, CAO Chunli, JIA Bin, LI Jianguo, FU Tao, TANG Shugui, LU Ding, BAO Ziping, LI Shizhu, ZHANG Xudong, XU Fasen, GUO Jiagang
. Effects of film mulching on Oncomelania hupensis breedingin different soil layers[J]. Chinese Journal of Vector Biology and Control, 2014
, 25(2)
: 152
-155
.
DOI: 10.11853/j.issn.1003.4692.2014.02.017
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