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一、养殖海区的选择选择２０米等深线以内的半开放海区（至少有一到二处自然屏障物），泥沙质底较平坦海区，潮流通畅，流速在５０～１００厘米／秒；表层水温８～２８℃，最适水温２０～２６℃；pH７．８～８．６；透明度０．３米以上，溶解氧５毫克／升以上。主要水质指标不
First, the choice of aquaculture area Select 20 meters isobath deep within the semi-open sea area (at least one or two natural barrier), the sandy bottom of the flat sea, smooth flow, the flow rate of 50 to 100 cm / s; surface water temperature 8 ~ 28 ℃, the most suitable temperature 20 ~ 26 ℃; pH7.8 ~ 8.6; transparency of 0.3 meters above, dissolved oxygen 5 mg / l above. The main water quality index is not