论文部分内容阅读
池塘养鱼是淡水养殖的重要组成部份。然而当前池塘养鱼的单产还很不平衡,高产塘每亩平均产鱼可达几百斤、上千斤,甚至几千斤,低产塘平均产量则只有几十斤。多数地区和单位都存在产量不高、不稳和发展不平衡的问题。如何进一步提高池塘养鱼的产量呢?一些高产单位的经验表明,调整好池塘放养鱼类的种群结构,解决好肥料、饲料,并搞好鱼病防治,是提高单产的关键。 1.安排最佳效益的鱼群结构。池塘放养鱼类的种群结构,既不应规定统一的模式,也不能照搬外地的经验,应因地制宜地
Pond fish farming is an important part of freshwater aquaculture. However, the current production of pond fish is still not balanced. The average yield of high-yielding ponds per acre is up to several hundred jin, or even a few kilos. The average yield of low-yielding ponds is only a few kilos. Most regions and units have problems of low output, instability and uneven development. How to further raise the production of pond fish? Experience from some high-yielding units shows that adjusting the population structure of stocking ponds, solving the problems of fertilizers, feedstuffs and prevention and treatment of fish diseases is the key to raising yield. 1. Arrange the best fish school structure. The stocking structure of pond stocking fish should neither stipulate a unified model nor copy the experience of other places and should be tailored to local conditions