在罗氏沼虾养殖过程中，普遍存在性早熟问题，很多体长在5～6cm的雌虾抱卵腔内已充满了卵。关于罗氏沼虾性早熟问题，一般认为是由以下两个原因造成的：(1)有效积温过高：在现行的池塘养殖过程中，由于水体较小，水位较低，水温的回升比河道、水库要快得多，而且罗氏沼虾的养殖 Macrobrachium rosenbergii breeding process, the prevalence of precocious puberty, many body length in 5 ~ 6cm of the female booby cavity has been filled with eggs. As for the problem of precocious pheasant in Macrobrachium rosenbergii, it is generally considered to be caused by two reasons as follows: (1) Effective accumulated temperature is too high. In current pond culture, due to the small body of water and the low water level, The reservoir is much faster, and Macrobrachium rosenbergii farming