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7月～9月是全年气温较高的季节,这一时期既是河蟹的生长旺季,也是病害高发季节,加强这一时期的管理至关重要,主要把握好以下三个技术措施:一、加强水质管理1、定时换水。定时换水可有效调节水体各理化因子,高温季节使水温保持在28℃以下,能防止河蟹性早熟。经常换水还能提高水
July to September is the annual season of high temperatures, this period is both the season of crab growth and disease season, to strengthen the management of this period is essential to grasp the following three technical measures: First, to strengthen Water quality management 1, change the water regularly. Regular water change can effectively regulate the physical and chemical factors of water body, the hot season to keep the water temperature below 28 ℃, to prevent crab precocious puberty. Regular water change can improve water