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鱼苗的饲养是把鱼苗养成3cm左右的夏花鱼种。它的饲养比饲养鱼种要精细得多,技术也难以掌握。下面介绍其饲养措施。一、清塘彻底,分期注水。清塘除害是提高鱼苗成活率的主要环节。用来清塘的药物有很多,如生石灰、茶粕、漂白粉、鱼藤酮,巴豆等。在这些药物中,以生石灰效果最佳。生石灰清塘既能在短时间内使水的PH值速速提高到11以上,杀死野杂鱼类和敌害生物及病原体,又能增加动、植物的钙营养元素和澄清水质。生石灰清塘可分干塘清塘和带水清塘两种方法,常用干塘清塘法。干塘清塘是先将池水排至5—10cm,每亩约用生石灰60—75公斤,晴天,把热的石灰桨均匀地满池泼洒。清塘后2—3天即可注入新水
Fry raising is to raise the fry about 3cm summer flower species. It is far more delicate than rearing fish, and technology is hard to master. Here are the feeding measures. A clear pond thoroughly, staging water. Clear pond decontamination is to improve the survival of fry the main link. There are many drugs used to clear the pond, such as lime, tea meal, bleach, rotenone, croton and so on. Among these drugs, lime is best. Quicklime can clear the water in a short period of time so that the PH value of water quickly increased to 11, killing wild fish and predatory organisms and pathogens, but also increase the dynamic and plant calcium nutrients and clarify the water quality. Lime clear pond can be divided into dry pond and clear pond with two methods, commonly used dry pond clear pond method. Dry ponds Qingtang is the first pond to discharge 5-10cm, about 60-75 kg of lime per acre, sunny day, the hot lime paddle spilled evenly pool. 2-3 days after the pond can be injected into the new water