论文部分内容阅读
湖北省红安县水产局钱汝玉同志,对鱼种越冬管理技术提出了“五防”。一防水深度过浅,应保持1.8m左右。二防投饵过勤,池塘表层水温3℃时,每7天投饵料1次,投饵量为鱼体体重的3％。池表水温在0℃以下或封冻,应停止投饵。三防水质过肥,冬季池水应保持中等肥度,透明度以30—40cm为宜。如水质过肥会使水浑浊变黑,有臭味,此时应加注新水,以增加池水溶氧。但也不能过
Comrade Qian Ruyu, Fisheries Bureau of Hongan County, Hubei Province, put forward “Five Preventions” on the overwintering management of fish species. A waterproof depth too shallow, should be kept about 1.8m. Two anti-cast bait over-time, pond surface water temperature 3 ℃, feeding every 7 days 1, feeding the amount of fish body weight 3%. Pool table water temperature below 0 ℃ or frozen, should stop feeding. Three anti-water quality fertilizer, winter water should maintain a moderate fertilizer, transparency to 30-40cm is appropriate. If the water is too fat will make water turbid black, odor, this time should be filled with fresh water to increase dissolved oxygen in the pool. But it can not be over