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阐述了河蟹苗的质量鉴别及运输技术关键。研究结果表明 ,出苗龄期为 6日龄 ,规格均匀 ,每公斤个体数在 1 4万～ 1 6万只 ,出苗时水温控制在 2 0℃～ 2 2℃ ,淡化盐度在 5‰以下 ,苗体支撑力和活动能力强 ,并能经受盐度突变和抗干燥的 ,均为优质蟹苗。运输蟹苗应维持合适的温度 ,保持蟹苗鳃部的湿润及适度的通风 ,并尽可能地减少相互挤压等。利用植物床运输蟹苗能保温、保湿、保持适度通风并维持支撑力 ,因而运输存活率高 ,值得在生产上推广应用。
The key points of quality identification and transportation technology of crab seedling are described. The results showed that the emergence age of 6 days, uniform size, the number of individual per kilogram in 1 40000 ~ 160 000, when the emergence of water temperature control at 20 ℃ ~ 22 ℃, desalination salinity of 5 ‰ below, Seedling support and activity ability, and can withstand salinity mutations and anti-dry, are high-quality crab seedlings. Transport crabs should be maintained at a suitable temperature to maintain the gills of crabs moist and moderate ventilation, and as much as possible to reduce the mutual squeeze. The use of plant beds to transport crabs can heat, moisturize, maintain moderate ventilation and maintain the supportive force, so the high survival rate of transportation, it is worth promoting in production.