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(一)促进第一次蜕壳蜕壳是河蟹生长发育的标志,尤其是第一次蜕壳至关重要。因蟹种经过较长时间的冬眠,加上放养时捕捉、运输及消毒等操作,营养、体力消耗较大,往往导致蜕壳困难。因此,春季管理时,要保持适宜的水位,一般水深控制在60厘米左右,以利提高水温,同时适当投喂含钙丰富
(A) to promote the first molt shell molt is a sign of growth and development of crabs, especially the first molt is essential. Due to the hibernation of the crab species after a long time, coupled with the operation of catching, transporting and disinfecting during stocking, nutrition and physical exertion are relatively large, which often leads to difficulties in molting. Therefore, the spring management, to maintain the appropriate water level, the general control of water depth of about 60 cm, in order to improve water temperature, while appropriate feeding of calcium-rich