论文部分内容阅读
四、放养种类、密度及方法目前,我国淡水养殖的鱼类有青鱼、草鱼、鲢鱼、鳙鱼、鲤鱼、鲫鱼、鳊鱼、鲂鱼、罗非鱼等。根据稻田的饵料组成来看,适合在稻田养殖的鱼类是鲤、草和罗非鱼。因此,可以把这三种鱼作为主养鱼,并适当搭养一些鲫、鲢、(鱼用)、鲴鱼等。根据农户的不同需要,放养密度和方法也可有所不同。1、双季稻单养食用鱼 单养鲤鱼,每亩放养3寸鲤鱼种200尾,秋后收获时,平均尾重可达4两以上,亩产约60～80斤。单养罗非鱼,亩放1.5寸鱼种400～500尾,同样可的上述产量,同时,还可以得到一些供明年放养的鱼种。
Fourth, stocking species, density and methods At present, China’s freshwater fish breeding herring, grass carp, silver carp, bighead carp, carp, crucian carp, bighead carp, bighead carp, tilapia and so on. According to the composition of the rice paddy field, suitable for fish farming in paddy fields are carp, grass and tilapia. Therefore, the three kinds of fish as the main fish can be, and appropriate to take some crucian carp, silver carp, (fish), catfish and so on. According to the different needs of farmers, stocking density and methods may also be different. 1, double-season rice monoculture raise fish carp, stocking 3-inch carp species per acre 200, autumn harvest, the average tail weight up to 4 more than two, about 60 to 80 kg per mu. Monoculture tilapia, mu put 1.5 inch fish 400 to 500, the same output, at the same time, you can also get some stocking for the next year.