鱼苗池中几种水生动物和藻类对鱼苗危害很大,应根据不同对象采用相应的防治措施以保障鱼苗正常生长。 一、甲虫 甲虫种类较多,其中较大型的体长达40mm,常在水边泥土内筑巢栖息,白天隐居于巢内,夜晚或黄昏活动觅食,常捕食大量鱼苗。其防治方法是: 1、生石灰清塘,以水深1m计667m~2水面施生石灰75—100kg,溶水全池泼洒; 2、每m~3水体用90％晶体敌百虫0.5g溶水全池泼洒。 二、龙虾 龙虾是一种分布很广、繁殖极快 Fish fry pool several aquatic animals and algae on the fry great harm, should be based on different objects using the appropriate control measures to ensure the normal growth of fry. First, the beetles beetle species more, of which the larger body up to 40mm, often nests in the water near the nest habitat, nest in the nest during the day, night or dusk activity foraging, often prey on a large number of fry. Its prevention and cure method is as follows: 1, Lime clear pond, with a depth of 1m 667m ~ 2 surface lime 75-100kg, water Quanchiposa; 2, m ~ 3 water with 90% crystal trichlorfon 0.5g water Spilled pool. Second, lobster lobster is a very wide distribution, breeding fast