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在试验水槽 (2 7m× 1 2m× 0 8m)底部中线铺设一根白色硬质塑料管 (φ =1 6mm) ,管的上侧钻有一排小孔 (φ =1 0mm) ,孔距分别为 2 5、 5 0cm ,压缩空气压力分别为 2 1 5 7、 2 7 46、 3 3 3 4、 3 9 2 3kPa。用 8种不同密度固定气泡幕对红鳍东方Fugurubiripes进行了阻拦效果的试验 ,结果表明 ,这 8种气泡幕对红鳍东方都具有较明显的阻拦作用 ,其中孔径 1 0mm、孔距 2 5cm、压缩空气压力为 2 7 46kPa时 ,气泡幕对鱼的阻拦效果最好 ,平均阻拦率为 71 0 %。
A white rigid plastic tube (φ = 16mm) is laid in the middle of the bottom of the test tank (27m × 122m × 0m). A row of small holes (φ = 10mm) 2 5, 5 0cm, compressed air pressure were 2 1 5 7, 2 7 46, 3 3 3 4, 3 9 2 3kPa. Eight kinds of fixed-density bubble screens were used to test the effect of Fugurubiripes against the red fins. The results showed that the eight kinds of bubble screens had obvious blocking effects on the red fins, 5cm, compressed air pressure of 2 7 46kPa, the bubbles of the best blocking effect of fish, the average blocking rate of 71 0%.