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一、亲虾的养殖培育 1.选健康苗种,放适宜密度。5月上旬,当水温达到14.0℃以上时,即可选择体长1.0cm以上的健康苗种放入专门的培育池,每亩放苗以5000～6000尾为宜,10月上旬,雌虾体长可达15cm以上,雄虾体长13cm以上,每亩存活总量应达到2000尾以上。 2.改善水质,减少污染。首先应注重底质的改良,每年必须进行清淤,然后抛撒生石灰。根据底质的总硬度和酸碱度,决定生
First, breeding broodstock 1. Choose healthy seed, put the appropriate density. In early May, when the water temperature reaches 14.0 ℃ above, you can choose the body length of 1.0cm above the healthy seedlings into specialized nursery ponds per acre Fangmiao 5000 ~ 6000 tail is appropriate, in early October, female body Length up to 15cm or more, male shrimp body length of 13cm or more, the total survival per acre should reach more than 2000. 2. To improve water quality, reduce pollution. First of all, we should pay attention to the improvement of sediment quality. Every year, we must carry out dredging and then throw lime. According to the total hardness of the sediment and pH, decided to students