目前,河蟹育苗的技术已成熟;蟹苗的市场价格已接近成本价格;一般育苗厂家育有二茬苗,在头茬苗成功的基础上,后期苗能否成功成为厂家盈利的关键。作者结合历年生产实践,就后期育苗生产中影响Z1变态的几个因素作如下探讨。1关于提高Z1质量的问题近几年早苗生产不多,江苏地区一般 At present, the technology of crab breeding has matured; the market price of crab is close to the cost price; the general nursery manufacturers have two stubble seedlings. Based on the success of the first stubble seedling, whether the late seedling can successfully become the key for manufacturers’ profitability. The author combines the past years of production practice, the late nursery production affect Z1 metamorphosis of several factors as follows. 1 on the issue of improving the quality of Z1 Sesame production in recent years small, Jiangsu general