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7.放养方法放苗时,要求育苗池与养殖池的水质指标变化不能太大。水温变化<1℃,盐度变化<3,pH变化<0.5。可以在池塘的一个角用塑料膜围成一个占全池面积2%～4%的区域,把里面的温度、盐度、pH值等理化因子调和成接近育苗池的状态。当大棚池塘内的水温达到20℃以上,就可以选择在晴天的上午把虾苗放入小区域中进行暂养。一般经过7天左右的暂养,虾苗的个体达到
7. stocking Fangmiao, requiring nursery ponds and pond water quality indicators can not change too much. Water temperature changes <1 ℃, salinity changes <3, pH changes <0.5. A corner of the pond can be surrounded by a plastic film that occupies 2% to 4% of the total area of the pond. The physical and chemical factors such as temperature, salinity and pH are reconciled into a state close to the nursery pond. When the water temperature inside the pond reaches more than 20 ℃, you can choose to put the shrimp into the small area in the sunny morning for holding. After about seven days in general holding, shrimp seedlings to achieve