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近几年来 ,我们豫东一带由于干旱少雨 ,鱼池水体深度不够 ,只能对池塘采取改造和衬砌方法 ,来实现保水养鱼。但是 ,这类池塘由于水体浅、投饵施肥量大 ,在夏季排注水条件不好的情况下 ,由于池水老化 ,常引起鱼类缺氧浮头的现象 ,影响了鱼种的成活率和产量。为探索一条既经济、?
In recent years, due to aridity and lack of precipitation, the depth of fish ponds in our eastern part of Henan Province is not enough. We can only rebuild and lode the ponds to achieve the water-retaining and fish culture. However, due to the shallow water in the ponds and the large amount of fertilizers for feeding, poor water conditions in the summer may lead to the phenomenon of floating hypoxia in fish and affect the survival rate and yield of the fish species. To explore an economy,?