鱼塘施用生石灰,是降低养鱼成本,提高养殖效益的一项重要措施。据笔者多点调查,1亩鱼塘年施生石灰100—200 公斤,开支5—10元,可增产鲜鱼10—20公斤,亩平增收40—80元。鱼塘施用生石灰其主要作用是: 1、清塘。生石灰清塘有三方面的明显好处:一是疏松塘底淤泥结构,改良底泥通气条件;二是使偏酸性水质转变为适合鱼类生长的弱碱性水质;三是能有效杀灭野杂鱼、有害昆虫、青泥苔、致病寄生虫和各种病原菌。生石灰清塘有干法清塘和带水清塘两种,干法清塘每亩泼洒生 The application of quicklime to fish ponds is an important measure to reduce the cost of raising fish and raise the efficiency of breeding. According to the author’s multi-point investigation, 1 mu of fish ponds will produce 100-200 kilograms of lime annually, with an expenditure of 5-10 yuan. The yield of fresh fish may be 10-20 kilograms, and the average yield per mu will be 40-80 yuan. The main role of fish ponds to apply quicklime is: 1, clear pond. Clear limestone clear pond has three distinct benefits: First, loose pond bottom silt structure, improve the conditions of sediment aeration; the second is to make acidic water quality for the growth of weak alkaline water quality; the third is to effectively kill wild trash fish , Harmful insects, blue mud moss, pathogenic parasites and various pathogens. Lime clear ponds have a clear pond and clear pond with two kinds of water, dry clear pond splashes per acre