俗话说“春放鱼种鱼发瘟，冬放鱼种长三分”。实践证明，冬至至立春是放养鱼种的最佳时机。其原因有三：一是此时鱼种壮、鱼鳞紧，适应力强；二是水温低，鱼活动弱，在捕捞和放养过程中成活率高；三是免去并塘越冬的麻烦，使鱼种较早地得到疏散精养，促进早春生产。鱼塘改造。? As the saying goes, “Spring fish stocking fish blast, winter fish species long third.” Practice has proved that the winter solstice to the beginning of spring is the best time to stocking fish species. There are three reasons for this: First, fish species are strong at this time, fish scale is tight and strong adaptability; second, the water temperature is low and the fish activity is weak; the survival rate in the process of fishing and stocking is high; Earlier to be evacuated and intensive to promote early spring production. Fish pond transformation. ?