近两年在沿.黄、渭盐碱荒滩地开挖的鱼池,多甲藻致鱼中毒的事件时有发生,稍不注意,则会死鱼,给养鱼者造成经济损失。下面列举两个事例,以此为戒提高警惕。 大荔县坡底村的张德安,承包了县农场盐碱地开挖的鱼池一个,面积8.4亩,池水偏碱,pH值7.7—9.0,采取以鲢鱼为主的养殖方式,6月中旬到7月中旬共施复合肥80公斤,池水由淡红色变为棕红 The past two years in the Yellow River, the saline-alkali wasteland excavation fish ponds, dinoflagellates cause fish poisoning from time to time, a little careless, it will die of fish, causing economic losses to fish farmers. Here are two examples, as a warning to be vigilant. Zhang De’an, a village at the end of Dali County, has contracted a fish pond for excavation of saline-alkali land in the county farmland, covering an area of ​​8.4 mu. The pond water is slightly alkaline with a pH value of 7.7-9.0. A silver carp-based farming method was adopted. From mid June to July In the middle of compound fertilizer 80 kilograms, the pool of water from red to brown