每年进入高温季节后,直到秋分节前,很多肥水塘的水面上浮起一层红黄色的水膜。它是一种单细胞藻类,在强光高温时繁殖快。中午为红色,温度低、阳光弱时变为红黄色或黄色,颜色一天变化几次。它满塘浮动、耗掉水中的氧气,常造成鱼类缺氧浮头、死亡。 防治措施是:①迅速注入新水,或边进水边换陈水,使塘水保持新鲜。②不施用化肥,尤其氮肥,不施人畜粪 After entering the hot season each year, until the autumnal equinox, many fat ponds float a red-yellow water film on the water surface. It is a unicellular algae that reproduces fast at high temperatures. Noon is red, the temperature is low, the sun becomes weak when the yellow-red or yellow, the color changes several times a day. It floated full of ponds, consumed oxygen in the water, often resulting in fish hypoxia floating head, died. Prevention and control measures are: ① rapid injection of new water, or while the water into the water, so that the water to keep fresh. ② Do not apply fertilizers, especially nitrogen, do not impose livestock manure