生产实践表明,利用现有鱼池稍加改造后实行鱼鳖混养,可明显提高养殖效益。这是因为鱼、鳖混养能互相促进,双获高产。鳖的残饵和粪便内氮、磷、钾等含量较高,可起培肥水质的作用,为以浮游生物为食的链、鳙鱼和杂食的鲤、鲫、罗非鱼的快速生长提供饵料条件。而大量的鱼类粪便、水草沤肥和随之繁殖起来的细菌、浮游生物、底栖生 Production practice shows that the use of existing fish ponds slightly modified fish and turtle polyculture, can significantly improve the farming efficiency. This is because fish, turtle polyculture can promote each other, double high yield. Turtle bait and excrement of nitrogen, phosphorus, potassium and other high content, can play a role in fertilizer water quality for the plankton feeding chain, shad and omnivorous carp, crucian carp, tilapia rapid growth to provide Feed conditions. And a large number of fish excrement, aquatic fertilizers and the accompanying bacteria, plankton, benthos