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系用40目/2.55cm~2尼龙纱袋状“T”形拦网,与直接投放和载体吸附染色钉螺漂流的方法,对潜江市张义咀大型斜管式倒虹吸管过水能否防止钉螺扩散进行了实验观察。其结果证实可导致钉螺扩散,而无完全防止钉螺扩散作用。钉螺主要依附水草等载体经倒虹吸管自上游向下游渠道扩散,同时显示上、下游渠道水面钉螺仍存在随水漂流扩散现象。
Department with 40 mesh /2.55cm ~ 2 nylon yarn bag-like “T” -type block, and direct delivery and carrier adsorption staining snail drifting method, Qianjiang City, Zhang Yi-ju large inclined pipe inverted siphon can prevent snail snail Diffusion was observed experimentally. The results confirmed that snails can be caused to spread, without completely preventing snail diffusion. Oncomelania mainly attached to plants and other carriers through the inverted siphon channels from upstream to downstream proliferation, at the same time shows the upstream and downstream channel snails still exist with the phenomenon of water drifting.