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入夏之后,鱼塘水温逐渐升高,是鱼类生长发育的旺盛季节。但到盛夏,水温高达30℃以上时,水中有机质分解强烈,鱼的呼吸强度增大,食欲减退,常会出现因水中缺氧而“浮头”或泛塘的现象。因此,这段时间的鱼塘管理工作重点应放在调节池塘水质上。盛夏之前,应首先将鱼塘水位加深。池水加深后产生水温分层效果。当上层水温升高,超过鱼类适温范围时,池鱼便可潜入温度较低的底层水中避暑。池水加深
After entering the summer, fish pond water temperature gradually increased, is a strong season of fish growth and development. However, in summer, when the water temperature is as high as above 30 ℃, the organic matter in the water decomposes strongly, the respiratory intensity of the fish increases, the appetite decreases, and the “floating head” or pan-pond phenomenon often occurs due to the lack of oxygen in the water. Therefore, the focus of fish pond management during this period should be on regulating the pond water quality. Before summer, fish ponds should first be deepened. After the deepening of the water temperature stratification effect. When the upper water temperature, over the range of fish temperature, the fish can be dive into the lower temperature of the water in the summer. Deepen the water