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小三毛金藻是海涂池塘养鱼的主要敌害之一。近几年来我省余杭、萧山、绍兴、上虞和慈溪等市、县的海涂池塘发现小三毛金藻病危害严重,引起大量死鱼,给渔业生产带来很大损失。最近我们通过试验已找出了一种比较有效的防治方法。这种病是由于小三毛金藻在池塘中大量繁殖后,分泌一种毒素,使鱼中毒致死。而这种藻的生长和繁殖要有较高的盐度和硬度,一般盐度在3—5％以上,氯化物含量2000毫克/升以上,水的硬度在40度以上,pH值7.2—9.6,水的透明度50—70厘米。发病前池水逐渐变清,呈棕褐色。继而可以发现鱼群焦躁不安,集群狂游,晚上可闻到
Small Mushroom golden algae is one of the main enemy of fish pond culture. In recent years, Yuhang, Xiaoshan, Shaoxing, Shangyu, Cixi and other cities and counties in our county found that the sea turtles Pseudostellariae small graminear disease is seriously endangered, causing a large number of dead fish, causing great losses to the fishery production. Recently we have found through experiments a more effective method of control. This disease is due to the small Mushroom golden algae in ponds multiply, the secretion of a toxin, so that fish poisoning. And this algae growth and reproduction should have a higher salinity and hardness, the general salinity in more than 3-5%, chloride content of 2000 mg / L and above, the water hardness of 40 degrees above pH 7.2-9.6 , Water transparency 50-70 cm. Before the onset of water gradually become clear, was brown. Then you can find the fish restless, cluster tour, can be heard at night