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为了提高网具在较高水温中的使用年限,我们根据黄海水产研究所介绍的苏联先进的复染法染网经验,采用硫酸铜、重铬酸钾复网染具,效果良好。我们用一块重五市斤4×2(23支纱)股纱结成,只进行过一次栲染,且在平均水温19.6℃的海水里作业过十四天,网目的抗涨力已降至10至11市斤的镜鱼流网进行复染。复染前先用12两栲皮进行一次栲染,干后把网衣浸于四两硫酸铜(兰矾)、二两四钱重铬酸钾(红矾钾)、30斤淡水的溶液中三十分钟。(溶液是以一斤网线为标准用硫酸铜八钱、重铬酸钾四线八,水六斤制成的),然后拿出在淡水中洗去残留的
In order to improve the service life of nets in the higher water temperature, according to the advanced dyeing method of the Soviet Union introduced by the Yellow Sea Fisheries Research Institute, the effect is good with copper sulfate and potassium dichromate reticulation. We use a weight of five pounds of 4 × 2 (23 yarns) made of yarn, only once dyed, and the average water temperature of 19.6 ℃ sea water work fourteen days, the net purpose of anti-raising force has dropped to 10 to 11 jin mirror fish drift net counter stained. Before the counter-staining with 12 two 栲 skin for a 栲 dye, dry the mesh soaked in four copper sulfate (alum), two hundred twenty-four dichromate (red potassium potassium), 30 pounds of freshwater solution thirty minutes. (Solution is based on a pound of copper wire as standard copper eight dollars, potassium dichromate four eight, made of water six pounds), and then took out in fresh water to wash away the residual