论文部分内容阅读
虾塘中进行对虾与青蟹混养,从生态学角度看,是一大禁区。虾蟹相互为敌、互相残食。大蟹吃虾、而小虾也能吃掉正在蜕壳期的成蟹。但是多年的生产实践证明:只要措施得当,同样能取得对虾、青蟹双丰收,且能大幅度提高对虾塘综合利用的整体效益。虾塘环境实行虾、蟹混养必须根据两者不同的生态特性,对常规虾塘进行适当改造。其具体要求:底质系泥质为主的泥沙塘底,水深在1.2米以上,换水能力在20%以上。水质温度不低于20℃,适温范围在14～32℃
Shrimp ponds for prawn and blue crab polyculture, from an ecological point of view, is a major forbidden zone. Shrimps and crabs are enemies of each other, eating each other. Crabs eat shrimp, and shrimp can eat crabs are molting period. However, many years of production practice have proved that as long as the measures are properly implemented, the same can be achieved shrimp, blue crab double harvest, and can greatly enhance the overall efficiency of comprehensive utilization of shrimp ponds. Shrimp pond environment practice shrimp, crab polyculture must be based on the two different ecological characteristics, conventional shrimp ponds appropriate transformation. Its specific requirements: Sediment-based muddy sediment bottom, water depth of 1.2 meters or more, water change capacity of 20% or more. Water temperature is not less than 20 ℃, suitable temperature range of 14 ~ 32 ℃