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(一)冬前抓膘,提高鱼体耐寒力与抗病力冬前气候适宜,应保证让鱼种安全摄食,使之膘肥体壮,提高鱼的耐寒力与抗病力。因此着重要培肥水质,每亩鱼塘施发酵粪肥400～600千克、尿素2～2.5千克、过磷酸钙3～5千克,并使池水透明度保持在25～30厘米;还要投足水草或投喂适量的旱草,同时增喂精料,按鱼种重量的5%投喂含蛋白质和淀粉较多的精料,每天分2次投喂。(二)并塘越冬,确保来年放
(A) catch the winter before, improve the cold hardiness and disease resistance of fish suitable winter climate, should ensure that the safety of fish species ingestion, so that fat and strong, and improve the fish’s cold hardiness and disease resistance. Therefore, the importance of fertilizing water quality, per mu of fish ponds fermented manure fertilizer 400 to 600 kg, urea 2 to 2.5 kg, 3 to 5 kg of superphosphate, and to maintain the transparency of water 25 to 30 cm; Feeding the right amount of dry grass, at the same time increase the feed concentrate, fed by 5% of the weight of the fish protein and starch-rich concentrate fed 2 times a day. (B) Tong Tong winter, to ensure that the coming year release