苏北地区的鱼塘大多以养殖白 鲢、花鲢为主。养殖户为了肥水和节约成本，向鱼塘倒入了人畜粪便，滋生了大量微生物，塘水易缺氧。鱼塘钓鱼，风的影响不可低估。 风太大，鱼为减少体能消耗而潜伏不动；风过小，鱼因缺氧而食欲不佳。一般情况下，刮３～４级风时，水随风荡漾而氧? Fish ponds in northern Jiangsu most of the breeding silver carp, silver carp mainly. Farmers in order to fertilizer and save costs, into the ponds of human and animal waste, breeding a large number of microorganisms, ponds easily anaerobic. Fish pond fishing, the impact of the wind can not be underestimated. The wind is too big and the fish lurks to reduce physical exertion; the wind is too small and the fish have poor appetite due to lack of oxygen. Under normal circumstances, 3 to 4 wind blowing, the wind waves with water and oxygen?