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一、冲加新水。夏秋高温期是鱼类生长的旺季,此时水质容易变坏。为此,每隔10天左右,可向坑塘内加注20—30厘米深的新水。遇鱼类严重浮头时,应紧急冲加新水。二、搅动塘底。浅水塘可直接下脚踩泥或用推耙搅动;深水塘可用拖耙拴上长绳,沉入塘底,人在塘边反复拉动拖耙进行搅动,以促进底部有机物质分解,使塘底吸附的营养盐类重新释放出来。三、施生石灰。一些放养量大的精养鱼塘,养殖期的后阶段PH
First, red plus new water. Summer season is the peak season of fish growth, water quality is likely to deteriorate. To this end, every 10 days or so, pit pond can be filled with 20-30 cm deep water. In the case of serious floating head fish, red water should be added urgently. Second, stir the bottom of the pond. Shallow reservoirs can be put directly under the foot mud or push rake agitation; deep ponds can be towed rappers tied to the long rope, sinking into the pond at the end of the pond repeatedly pulling drag rake agitation to promote decomposition of the bottom of organic matter, so that the bottom of the pond adsorption Nutrients are released again. Third, Shi Sheng lime. Some intensive stocking fish ponds, the latter part of the breeding period PH