论文部分内容阅读
鱼种池因清塘不彻底,注水或投喂浮萍、水草时掺带进小野杂鱼、虾,在鱼种池与家鱼争食耗氧,影响鱼种规格和产量。适量套养黄颡鱼能起着去杂清野的作用,黄颡鱼个体小,生长速度慢于家鱼,对家鱼无危害,但能有效消灭野杂鱼、虾,促进鱼种生长,提高养殖产量。套养时应注意以下几点:一、套养黄颡鱼必须在夏花鱼苗入塘1个月后投放,投放过早因鱼苗入塘时间短,规格小,会出现黄颡鱼
Fish ponds due to clear pond is not complete, water or fed duckweed, water plants when mixed into the wild trash, shrimp, fish ponds compete with the consumption of fish, affecting fish species specifications and production. The right amount of capuchin can play a role in cleaning wild, catfish grows slower than the domestic fish, no harm to domestic fish, but can effectively eliminate wild trash fish, shrimp, promote the growth of fish species, improve Breeding production. Nesting should pay attention to the following points: First, raising yellow catfish must be put in summer pond fry into the pond after 1 month, put too early due to the pond into the pond for a short time, small size, there will be yellow catfish